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Academic literature on the topic 'Heavy metal content'

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Published: 4 June 2021

Last updated: 29 July 2024

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Journal articles on the topic "Heavy metal content"

Wachs, Bodo. "Heavy metal content in Danubian fish." River Systems 11, no. 4 (April 13, 2000): 533–56. http://dx.doi.org/10.1127/lr/11/2000/533.

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MIELCZAREK, Marcin, and Kamil SZYDŁOWSKI. "THE HEAVY METAL CONTENT IN COMMERCIAL DOG FOODS." Folia Pomeranae Universitatis Technologiae Stetinensis Agricultura, Alimentaria, Piscaria et Zootechnica 332, no. 41 (March 30, 2017): 29–36. http://dx.doi.org/10.21005/aapz2017.41.1.04.

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Widyasari, Ni Luh, I. Nyoman Rai, IGB Sila Dharma, and Made Sudiana Mahendra. "ANALISIS KANDUNGAN LOGAM BERAT Pb, Cu, Cd, Cr PADA TANAMAN PADI DAN JAGUNG YANG SISTEM PENGAIRANNYA BERASAL DARI SUNGAI BADUNG." ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) 17, no. 2 (November 23, 2023): 165. http://dx.doi.org/10.24843/ejes.2023.v17.i02.p01.

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This research aims at identifying the content of heavy metals, namely Pb, Cu, Cd, and Cr in the rice and corn cultivated on the agricultural land of Subak Kerdung, Pemogan Village, South Denpasar District. Rice and corn plants are suspected of having indications of heavy metals due to pollution of the downstream Badung River, which is used as irrigation in Subak Kerdung agricultural land. The analysis of heavy metal contents is conducted on the rice and corn plant organs samples, including roots, stems, leaves, and seeds. The test results show that the organs of rice and corn plants detect the contents of heavy metals Pb, Cu, Cd, and Cr which exceed quality standards. According to the results of analysis tests on organs of the rice plant, the content of heavy metal Pb is detected 21.95 mg/kg; heavy metal Cu 170.42 mg/kg; heavy metals Cd 0.35 mg/kg; and heavy metal Cr 7.03 mg/kg. Meanwhile, the results of analysis test on organs of the corn plant detect the content of heavy metal Pb 16.96 mg/kg; heavy metal Cu 58.16 mg/kg; heavy metal Cd 2.5 mg/kg; and heavy metal Cr 3.16 mg/kg. Therefore, it can be concluded that the content of heavy metals Pb, Cu, Cd, and Cr is more detected in the roots of rice and corn plants, also partially translocated to their stems, leaves, and seeds. Keywords: heavy metals; rice plants; corn plants; Badung rivers

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NISHIOKA, Hiroshi, and Hirofumi KODERA. "Heavy metal content in fern plants." Journal of Environmental Conservation Engineering 34, no. 4 (2005): 301–5. http://dx.doi.org/10.5956/jriet.34.301.

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Raju, N. Janardhana, M. Kofod, M. Isenbeck‐Schröter, and G. Müller. "Heavy metal content of Indian cigarettes." Toxicological & Environmental Chemistry 72, no. 3-4 (October 1999): 215–19. http://dx.doi.org/10.1080/02772249909358838.

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Sapronova, V., R. Novitskyi, O. Kolomiitseva, and A. Buleyko. "Heavy metal contents in water, bottom sediments and fish of water bodies of different purposes in Dnipropetrovsk region." Ribogospodarsʹka nauka Ukraïni., no. 2(68) (June 28, 2024): 23–39. http://dx.doi.org/10.61976/fsu2024.02.023.

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Purpose. Assessment of the dynamics of heavy metal accumulation in water, bottom sediments, and fish of water bodies of different purposes in Dnipropetrovsk region. Methodology. The study on heavy metal contents in water, bottom sediments, and hydrobionts (fish) was conducted at various water bodies (Dnipro-Donbas hydraulic canal), fish ponds (ponds of PrJSC “AgroSoyuz”, PrJSC “Petrykivsky Rybhosp” and PE «Agrofirma «Nakhodka»), and multipurpose reservoirs (Dnipro reservoir, Sholokhivske reservoir) in Dnipropetrovsk region from 2015 to 2024. The determination of heavy metal concentrations (Pb, Cd, Mn, Cu, Fe, Ni, Zn) was carried out at the laboratory of the Research Center for Biosafety and Environmental Monitoring of Agricultural Resources of Dnipro State Agricultural and Economic University. The metal content was analyzed using atomic absorption spectrophotometry. The heavy metal contents were measured in four fish species (European perch, roach, Prussian carp, common carp). Sampling, data processing, and statistical analysis were conducted according to standard hydrochemical, hydrobiological, and ichthyological methods. The heavy metal contents were determined in fish muscles. Water quality was assessed according to general requirements and standards for fishery water bodies. Findings. The heavy metal contents in ecosystems of water bodies of different purposes was determined. In the sediment of ponds of PrJSC “AgroSoyuz” and PrJSC “Petrykivsky Rybhosp”, the heavy metal contents were significantly higher than in water or fish body: manganese within 41.24–68.43 mg/kg, cadmium – 0.32 mg/kg, lead 1.50–4.90 mg/kg (for ponds of PrJSC “AgroSoyuz”); manganese – 29.73 mg/kg, cadmium – 0.54 mg/kg, lead 5.72 mg/kg (for recreational pond of PrJSC “Petrykivsky Rybhosp”). For the water of these ponds, which is used for aquaculture, an excess of the content of some heavy metals – Mn, Zn, Cd - was recorded, and for the pond of PrJSC “AgroSoyuz” also Cu. Exceeding the normative heavy metal content for pond water of PE “Agrofirma “Nakhodka” was not noted. The content of some heavy metals in the water of the upper part of the Dnipro reservoir (Cu, Fe) did not meet the fishery norms. At the same time, the heavy metal contents in water and fish of these water bodies does not exceed the fishery standards for water used for fishery purposes. The heavy metal contents in the water of the upper part of the Dniprovske Reservoir (except for the Samara Bay) corresponded to fishery standards. The water in the Dnipro-Donbas hydrotechnical canal was characterized by high levels of heavy metals. Of the 6 investigated heavy metals, the maximum allowable concentrations were not exceeded only for lead (0.40 mg/dm3) The heavy metal contents in C. carpio muscles (juveniles and table fish) in different ponds of PrJSC “Petrykivskyi Rybhosp” (nursery and fattening) corresponded to fishery standards during the three years of the study (2011, 2015, 2016). In the Sholokhivske reservoir, the zinc content in C. gibelio muscles was 46.50 mg/kg, slightly exceeding the maximum allowable concentrations. Exceedances of copper and lead content were not noted. For fish from the Dnipro reservoir, the content of most heavy metals was elevated. In the meat of pelagic roach (R. rutilus), only copper content was within the normal limits (1.56 mg/kg), while all other 6 heavy metals exceeded the maximum allowable concentrations. In the meat of benthophagous Prussian carp (C. gibelio), elevated levels of accumulation of heavy metals were observed for manganese, iron, lead, and nickel, while zinc, copper, and cadmium content were within the standards. In the meat of European perch (P. fluviatilis), the highest content of heavy metals was observed for iron (80.54 mg/kg), with elevated levels observed for manganese, zinc, lead, and nickel. The obtained results indicate that the hydroecosystem of the Dniprovske reservoir, unlike other water bodies in the region, is significantly polluted with heavy metals. This is adequately reflected in the levels of heavy metal accumulation in the organisms of fish from different ecological groups - pelagic herbivores, benthophagous bottom-feeders, and predators. Originality. For the first time, the content of heavy metal accumulation in water, bottom sediments, and fish of water bodies of different purposes in Dnipropetrovsk region has been carried out over several years (2015–2024). Practical Value. The obtained results have theoretical and practical importance for the preparation of scientific-biological justifications for the fishery use of water bodies of various purposes in the region. Continuous monitoring of the heavy metal contents in hydrobionts is necessary to ensure food safety and the quality of raw materials and food fish products. Keywords: Dnipropetrovsk region, heavy metals, Dnipro Reservoir, Dnipro-Donbas Canal, ponds, Sholokhivske Reservoir, water, sediment, fish, accumulation of pollutants.

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Xu, Guo Wei, Xue Wu, Su Ling Huang, Xin Tian Yuan, Yang Gao, Yong Zhang, and Chuan Bin Dong. "Analysis of the Change of Heavy Metal Contents in Farmland in Mengcheng." Applied Mechanics and Materials 178-181 (May 2012): 773–76. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.773.

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In order to find out the variations of soil heavy metal contents in Mengcheng, the heavy metal of the soil was tested in the same way in 2010, based on the survey results of 2001. The results showed that the contents of the 8 kinds of heavy metal in Mengcheng County were lower than those of the national standard, but the heavy metal content of Mengcheng County in 2010 were significantly higher than those in 2001, especially Pb, and the content of Hg, Ni, As also increased greatly; The increased of changing rate of various heavy metals contents are in the following descending order: Pb> Hg> Ni> As> Cu> Cd> Cr> Zn. The uneven dispersion of various heavy metals element in different sections of Mengcheng County also increased.

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Huang, Sui Liang. "Adsorption of Cadmium Ions onto the Yellow River Sediment." Water Quality Research Journal 38, no. 2 (May 1, 2003): 413–32. http://dx.doi.org/10.2166/wqrj.2003.026.

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Abstract Adsorption of cadmium ions onto Yellow River sediment was studied in a batch reactor. Equilibrium adsorption of cadmium ions onto Yellow River sediment can be well described by the Langmuir adsorption isotherm. In view of common experimental conditions in the batch reactor, a set of equations for describing variations of both the dissolved heavy metal pollutant concentration and the particulate heavy metal pollutant concentrations (the adsorption content of heavy metal pollutant on unit weight of sediment) with time was formulated with the use of an adsorptive reaction kinetic equation of heavy metal pollutant, mass balance equation and corresponding initial conditions. Furthermore, formulae for calculating the equilibrium dissolved heavy metal concentration and the equilibrium particulate heavy metal concentration (the equilibrium adsorption content of heavy metal pollutant on unit weight of sediment) in the batch reactor were obtained. These can be used as tools for further study. It was found that the saturation adsorption content, b, constant of adsorption-desorption rate, k, and coefficient of adsorption rate, k1 (and coefficient of desorption rate k2), in the adsorptive reaction kinetic equation of the Langmuir type are independent of the suspended sediment concentration. Adsorption contents of heavy metal pollutants on unit weight of sediment (the suspended particulate heavy metal concentration) decreases with increasing suspended sediment concentration and can be well explained by the law of mass conservation. Adsorption capacity, which is defined as adsorption content of heavy metal pollutant by unit volume of (muddy) water, increases with an increase in either the suspended sediment concentration or initial dissolved heavy metal concentration.

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Mukherje, Dr Ashish, Dr Manvi Sharma, and Sh Anup Kumar Senapati. "A Study On Heavy Metal Content In Urad Dal Flour In India." International Journal of Research Publication and Reviews 5, no. 4 (April 11, 2024): 7159–62. http://dx.doi.org/10.55248/gengpi.5.0424.10103.

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Uhde, E., T. Salthammer, R. Marutzky, and M. Bahadir. "Heavy metal content of wooden furniture coatings." Toxicological & Environmental Chemistry 53, no. 1-4 (January 1996): 25–31. http://dx.doi.org/10.1080/02772249609358271.

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Dissertations / Theses on the topic "Heavy metal content"

PULS, ROBERT WILLIAM. "ADSORPTION OF HEAVY METALS ON SOIL CLAYS (KAOLINITE, CADMIUM, MONTMORILLONITE, ZINC)." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183889.

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Metal cation adsorption is the predominant chemical mechanism governing the attenuation of toxic metal movement in soils. Clay minerals are the primary adsorbent surfaces in soils due to their ubiquitous nature and large reactive surface area. This study examined the relative affinity of the metals cadmium, nickel and zinc for the clay minerals kaolinite and montmorillonite. The influence which different mineral adsorbents and different complexing ligands in solution have on the adsorption of metal ions was assessed using the Hard-Soft Acid-Base Principle as a theoretical framework for predicting the maximum extent of adsorption and rate of adsorption. The HSAB principle is that hard bases prefer to complex hard acids and soft bases prefer to complex soft acids. The hypothesis that initiated these investigations was that the hard-soft character of mineral surfaces is due to their surface functional groups and can be measured using metal cation adsorption selectivity experiments where pH and complex ion formation are controlled. When complex ion formation in aqueous solution was minimized (i.e. in Ca(ClO₄)₂), adsorption decreased in the order of decreasing softness, CD > Zn > Ni for both clay minerals. Montmorillonite behaved as a slightly harder Lewis base than kaolinite, sorbing the harder Ni and Zn ions to a greater extent than Cd, although both minerals behaved as soft Lewis bases. In the presence of chloride and sulfate ligands, adsorption sequences changed and reflected results from typical soil solution studies. In some cases the adsorption sequences can be explained using the HSAB principle together with computer speciation data and this approach merits further consideration and research. Adsorption over time and calculated adsorption rate constants were generally consistent with equilibrium selectivity data. Adsorption rates decreased in the order Cd > Zn > Ni in Ca(ClO₄)₂ for both clay minerals. The adsorption curves reflect a two-step adsorption process involving a rapid exchange-type reaction followed by a much slower adsorption involving diffusion into the crystal or alteration of the surface through the formation of a new solid phase involving the adsorbed ions.

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Whitt, Michael John-Ross. "Studies to Characterize Heavy Metal Content and Migration From Recycled PolyethyleneTerephthalate." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1350.

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Packaging Materials account for 31% of the world’s municipal solid waste. Agencies like the Environmental Protection Agency (EPA) and the Agency for Toxic Substances and Disease Registry (ATSDR) are pushing for the increased use of recycled thermoplastic materials. Polyethylene terephthalate (PET) is a commonly recycled thermoplastic which is used to package ready-to-eat fruits and vegetables. Most recycled polyethylene terephthalate (RPET) packaging materials contain heavy metal catalysts, the most common being antimony. The recent increased use of recycled plastic materials has been suspected as the source of increased human heavy metal exposure. In this study, cadmium, chromium, nickel, lead and antimony were quantified in post-consumer RPET rigid containers and films using inductively coupled plasma-atomic emission spectrometry (ICP-AES). Two hundred samples were tested of which 29 were found to be contaminated with heavy metals in the parts-per-million (ppm) range. Chromium was found in all the contaminated sample replicates at an average level of 8.18 ppm. Cadmium was found in all the contaminated samples as well. Lead was found in 90.4% of the contaminated samples and concentrations ranged from a low of 0.02 ppm to a high of 0.36 ppm. Nickel was found in 96.4% of the contaminated samples while antimony was found in 97.6% of the samples. Due to limited sample material, 22 of the 29 contaminated RPET rigid containers and films were tested for heavy metal migration into a 5% citric acid:water solution (w/v) or deionized water. Samples were subjected to prolonged storage at 7.2 or 22.2°C for 1, 7 or 14 days, or were exposed for 5 minutes to microwaves from a 1700-watt microwave oven set to 70% power before analysis. Leachate values were at ppb levels but were often below the ICP-AES Limits of Detection which were at also the ppb level, whether calculated for deionized water or 5% citric acid in water. No measureable levels of heavy metal were detected for any sample exposed to water, regardless of treatment. For samples exposed to 5% citrate and stored or microwaved, only chromium and nickel leached at measurable levels, and the number of RPET’s releasing measurable chromium and nickel increased with microwaving compared to the same plastics stored at 22.2 or 7.2°C. Since leaching was calculated as µg/L of heavy metal lost from the entire inner surface (1021 cm2) of a retail salad bag, actual exposure to heavy metal would be much less than measured in this study as retail fruit and vegetable packages and microwaveable pouches usually contain very little liquid in order to increase food safety. The results therefore suggest the potential for little migration of heavy metal from recycled PET to whole or fresh-cut fruits and vegetables when held at ambient or refrigerated temperatures, or when microwaved.

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Gray, Brian David. "Acid volatile sulfides as indicators of heavy metal binding capacity in southeastern coastal sediments." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/20293.

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Mgobozi, Vuyokazi. "Heavy metal content absorption and medicinal potential of Egeria densa (Planch.) Casp." Thesis, University of Fort Hare, 2013. http://hdl.handle.net/10353/d1013121.

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The contamination of heavy metals in the environment is a looming concern worldwide. Egeria densa (Planch) (Submerged aquatic plant) from two ponds: Site A with co-ordinates (32º 48’22.04”S; 26°48’58.79” E) and Site B with co-ordinates (32°48’33.25”S; 26°48’33.25”S) in Alice (Eastern Cape) was evaluated for its ability to absorb heavy metals, phytochemical constituents, antimicrobial activity and ultra-structure using standard analytic procedures. Cadmium (Cd), copper (Cu), iron (Fe), lead (Pb), manganese (Mn), and zinc (Zn) were measured in water, sediments and plant. The concentrations of these metal elements were determined with use of Inductively Coupled Plasma- Optical Emission Spectrometry (ICP-OES). In sediments, the heavy metals (mg/kg) decreased in the order of their average concentration as follows: Fe (40.320) > Zn (1.259) > Pb (0.564) > Mn (0.186) > Cu (0.037) in Pond 1 whereas in Pond 2 Fe (61.527) > Cd (0.999) > Mn (0.648) > Pb (0.586) > Zn (0.156) > Cu (0.045). The highest concentration of Fe was detected in both sites and Cu being the least. The concentrations of the metals in the plants sample (from Pond 1) were found in order of Mn > Pb > Cu > Fe whereas cadmium and zinc were not detected, while the concentration in Pond 2 decreases in order of Zn > Mn > Pb > Cd > Fe > Cu. In the water samples, concentrations of heavy metals (mg/L) decreased in the order of their average concentrations as follows: Pb (35.36) > Fe (3.07) > Mn (0.238) > Cu (0.104), both cadmium and zinc were below the limit of detection in Pond 1, whereas in Pond 2 the concentrations decreased as follows: Pb (13.033) >Fe (1.69) > Cu (0.270) > Mn (0.248) > Cd (0.004) and Zinc was not detected. Phytochemical analyses of the plant extracts revealed the presence of phenols, flavonoids, proanthocyanidin, flavonols, saponins, alkaloid and tannins in all the extracts (water, acetone and n-hexane). Both acetone and water extracts, showed high concentration of proanthocyanidin, while tannin was the lowest in acetone extract. Antimicrobial evaluation using, Gram positive (Staphylococcus aureus, Bacillus pumilus, Bacillus cereus, Streptococcus pyogenes, Enterococcus faecalis) and Gram negative (Klebsiella pneumonia, Escherichia coli, Pseudomonas aeruginosa, Proteus vulgaris and Serratia marcescens) bacteria showed negative results for all the strain, except Streptococcus pyogenes which was inhibited at MIC of 0.1 mg/ml. Scanning electron microscopy (SEM) of ultra-structure of Egeria densa, showed that certain bacteria attached to the leaf, However more work has to be done on E. densa to verify the mechanism by which it accumulates heavy metals. The study shows that E. densa has a potential of accumulating heavy metals especial Manganese in plant.

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Allen, Tammy Reneé. "A classification of the dress of heavy metal music groups using content analysis /." This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-12042009-020120/.

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Pham, Vivian G. "Ecological Risk Assessment of Heavy Metal Content in the Hatillo River, Costa Rica." Scholarship @ Claremont, 2015. http://scholarship.claremont.edu/scripps_theses/571.

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Rivers all around the world have become increasingly polluted with heavy metals, largely due to industrialization and urbanization. Organisms exposed to high concentrations of heavy metals have shown evidence of biotoxicity and physical deformities. With biomagnification in mind, the possibility that this contamination may soon directly affect humans is a real concern, and policies in manufacturing industries worldwide may have to be reformed. In this study, we measured the concentrations of arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), and lead (Pb) in the Hatillo River and compared these values to those measured in the Tarcoles River, a highly polluted river, and Terciopelo Creek, a relatively clean river. The results showed that the Hatillo River had significantly lower levels of most detected heavy metals than both the Tarcoles and Terciopelo. Overall, sediments in all rivers showed high levels of heavy metal content--especially in chromium, copper, nickel, and lead--which could build up and affect organisms over a long period of time.

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Allen, Tammy Rene. "A classification of the dress of heavy metal music groups using content analysis." Thesis, Virginia Tech, 1993. http://hdl.handle.net/10919/46090.

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The research was a qualitative study of the dress of heavy metal (HM) music groups using content analysis. The purpose was to examine dress characteristics of a representative random sample of HM music groups. The objectives were (a) to develop a classification system for HM music groups based on time and subgenre, (b) to identify music groups within each cell (i.e., time and subgenre) of the classification system, and (c) to identify dress characteristics of a representative random sample of the music groups.

The subjects in the study were HM music groups as pictured on albums. The variables were the selected items of dress and the classification of the groups by time and subgenre. A classification system was developed and used for the selection of subjects. Using the HM Dress Classification Instrument developed by the researcher, specific dress characteristics of twenty-four HM music groups were identified. This data was compiled in tabular format.

Among the twenty-four HM groups, the predominant clothing was a black woven shirt and black leather/suede pants. Clothing trim included studs, motifs/designs, words and fringe. No visible jewelry was predominant. The primary shoes observed were western boots. Straight, shoulder-length black or blond hair with no head covering was predominant. Beards, makeup, tattooing, and other forms of corporal adornment were observed. Although some dress categories were dominated by single items, changes were observed across time and subgenres. The data indicated rejection of the two null hypotheses.

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Nkqenkqa, Vuyiseka. "Metal and microbial contamination of agricultural soil and the Veldwachters River, Stellenbosch, South Africa." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2423.

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Thesis (MTech (Environmental Health))--Cape Peninsula University of Technology, 2017.
Surface water is used as a source of water supply in many countries, including South Africa. One of the sources of surface water pollution is leachate and surface runoff from landfills. In agricultural soils, the landfill runoff and leachate deteriorate the quality and affect the fertility of soil. The entry of metals and microorganisms from landfill leachate to adjacent environments is through surface runoff due to rainfall. Adverse effects on human- and environmental health triggers a need to monitor and control contaminants in the environment. The aims of the study are to determine the effect of landfill runoff and leachate on agricultural soil and river water (Veldwachters River) running adjacent to the Devon Valley landfill site and to identify potential metal-tolerant organisms in environmental samples collected in Stellenbosch, Western Cape, South Africa. Samples (agricultural soil, river water and sediments) were collected once a month for a period of six months from the study area for analysis. Physicochemical parameters that are known to have major effects on environmental samples were assessed and the concentrations of various metals (Al, Pb, Cr, Mn, Mo, Co, Ni, Cu, Zn, Fe, Cd and V) were also determined by means of inductively coupled plasma mass spectrometry (ICP-MS). Soil texture analysis was tested in order to monitor the metal distribution in soils under the influence of environmental factors.

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Khandoker, Rafiqul Alam. "Distribution of Heavy Metals and Trace Elements in Soils of Southwest Oregon." PDXScholar, 1997. https://pdxscholar.library.pdx.edu/open_access_etds/4691.

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Soil samples from 118 sites on 71 geologic units in southwest Oregon were collected and analyzed to determine the background concentrations of metals in soils of the region. Sites were chosen in areas that were relatively undisturbed by human activities. The U.S. Environmental Protection Agency approved total-recoverable method was used to recover metals from samples for analysis. The twenty six metals analyzed were: Ag, AI, As, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, La, Li, Mg, Mn, Mo, Na, Ni, Pb, Sb, Se, Tl, V and Zn. The Klamath Mountains followed by the Coast Range contain the highest soil concentrations of AI, Ca, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Ni, V and Zn. Soils of the Coastal Plain and High Lava Plains contain the lowest concentrations of these metals. Unusually high soil As concentrations are found at two sites in the Klamath Mountains. All Be and Cd values above laboratory's reporting limits are also from the Klamath Mountains and Coast Range. Concentrations of soil Ba and La are fairly uniform throughout the region. Soil Pb levels are generally low with a few exceptions in the Klamath Mountains, Coast and Cascade Ranges. The region west of the Cascade Range has higher soil Hg contents than in the east. Soil metal concentrations are generally much higher in the region west of the Cascade Range, excluding the Coastal Plain, than in the east with the exception ofNa, because of more ultramafic rocks and a wetter climate. Soil metal concentrations are directly related to soil development with the highest concentrations being found in well developed Alfisols and Ultisols and the lowest concentrations in poorly developed Entisols. Most metals have similar averages and ranges of concentration compared to the rest of the United States (U.S.). Metals with high values compared to the rest of the U.S. are Cr, Co, Cu, Mn and Ni. In general, AI, Co, Cr, Cu, Fe, La, Li, Mg, Na, Ni, and V are concentrated in the B horizon while Ba, Ca, Hg, K, Mn, Pb and Zn are concentrated in the A horizon.

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Andrade, Marc-David. "Development of an on-site ex-situ unsaturated-flow remediation process for trace metal contaminated soils." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85117.

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Innovative means and methods were tested to develop an economical, pragmatic and environmentally sustainable soil remediation process for heavy metal contaminated soils. An unsaturated-flow soil washing procedure was devised to dissolve the soil-bound toxic heavy metals; the latter were extracted by a chemical washing solution that percolated through the soil matrix. Subsequently, the leached toxic heavy metals were selectively concentrated, by a chemical precipitation process, into a solid waste. Thereby, a fraction of the spent ethylenediaminetetraacetic acid (EDTA), within the washing and rinsing leachate, was theoretically regenerated and recycle-ready.
The unsaturated-flow washing procedure was perfected by applying different treatments to a soil from a secure landfill. This soil was contaminated with Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, S and Zn. The major contaminants were Fe, Pb, Zn, S, Cu and Mn, making up 25, 1.9, 1.0, 0.4, 0.4 and 0.2%wt of the soil. The extraction responses of the contaminants and those of Al, Ca, Mg and P were established for citric acid (0.5 M) and different molarities of diammonium EDTA ((NH4)2EDTA). The DOW Chemical Company supplied the (NH4)2EDTA (i.e. VERSENE), a 1.37M industrial cleaner, which roughly costs $1.85kg-1 in bulk. The affordability of VERSENE was a pre-condition for hoping to satisfy the economical feasibility of remediating trace metal contaminated soils.
Ultimately, the developed unsaturated-flow washing procedure was tested in a pilot-scale experiment, for its ability to remediate a soil from an abandoned car battery recycling facility. The latter soil was severely contaminated with Pb (3.9%wt). Drip irrigation was used to apply (NH4) 2EDTA and water-rinsing solutions to the surface of soil heaps that rested atop an impermeable barrier, which permitted the retrieval of the leachate. A cumulative EDTA input to the soil of 10.6% wt extracted 49.4% of the total Pb content of the soil. Alternatively, readily biodegradable citric acid barely extracted 2.2% of the total Pb content of the soil, for a cumulative input of 18.1% weight of soil. Different treatments were tested for their effectiveness in concentrating the leached toxic heavy metals into a solid waste. The Pb was best precipitated with Na2S alone, as it provided the most concentrated solid toxic waste.
The environmental sustainability of remediating trace metal contaminated soils was thoroughly examined, as per the amounts of chemical entrants and toxic waste by-products, and per the post-treatment leaching of toxic levels of the remaining and potentially toxic trace metals. (Abstract shortened by UMI.)

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Books on the topic "Heavy metal content"

Sanz, Lucía H. Heavy metal sediments. Hauppauge, N.Y: Nova Science Publishers, 2011.

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Varma, A., and Irena Sherameti. Detoxification of heavy metals. Heidelberg: Springer, 2011.

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(Jean-Pierre), Vernet J. P., ed. Heavy metals in the environment. Amsterdam: Elsevier, 1991.

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Beznosov, A. I. Soderzhanie ti︠a︡zhelykh metallov v pakhotnykh pochvakh Udmurtskoĭ Respubliki: Monografii︠a︡. Izhevsk: Izhevskai︠a︡ GSKhA, 2005.

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Bokova, T. I. Ėkologo-tekhnologicheskie aspekty povedenii︠a︡ ti︠a︡zhelykh metallov v sisteme pochva-rastenie-zhivotnoe-produkt pitanii︠a︡ cheloveka. Novosibirsk: SibNIPTIP, 2004.

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Sauerbeck, Dieter. Beurteilung von Bodenbelastungen und ihre wirtschaftlichen Auswirkungen in Bulgarien: Ermittlung und Dokumentation von Belastungen landwirtschaftlich genutzter Böden durch Schwermetalle und persistente organische Stoffe und Beurteilung der dadurch eingetretenen Nachteile bei der Landrefomr in Bulgarien. Berlin: Umweltbundesamt, 1996.

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G, Crössmann, and Unna (Germany : Landkreis). Umweltamt., eds. Schwermetalle in Böden verschiedener Nutzungsformen im Kreis Unna: Eine Bestandsaufnahme. [Unna]: Das Amt, 1986.

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N, Barton Harlan, and Geological Survey (U.S.), eds. Analytical results and sample locality map of heavy-mineral concentrates of ridge-top soil samples from the Morgan Pass Region of the Goshute Peak and Blue Bell Wilderness Study Areas, Elko County, Nevada. [Reston, Va.?]: U.S. Dept. of the Interior, Geological Survey, 1987.

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Aspinall, R. J. Heavy metal contamination in soils of Tyneside: A geographically-based assessment of environmental quality in an urban area. Newcastle upon Tyne [Northumberland]: University of Newcastle, Dept. of Geography, 1987.

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Aspinall, R. J. Heavy metal contamination in soils of Tyneside: A geographically-based assessment of environmental quality in an urban area. Newcastle upon Tyne: Department of Geography, University of Newcastle, 1987.

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Book chapters on the topic "Heavy metal content"

Morgan, Jeffrey N. "Effects of Processing on Heavy Metal Content of Foods." In Advances in Experimental Medicine and Biology, 195–211. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4853-9_13.

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Roosmalen, G. R. E. M., M. M. G. Senden, T. Brethouwer, and M. Tels. "The effect of processing on the heavy metal content in compost." In Environmental Technology, 77–86. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3663-8_11.

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González, L. M., and O. Vargas. "Variation of Heavy Metal Content with Depth in Sabana de Bogotá Soils." In Environmental Geochemistry in Tropical and Subtropical Environments, 113–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-07060-4_10.

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Kacew, Sam. "Mammary Heavy Metal Content: Contribution of Lactational Exposure to Toxicity in Suckling Infants." In Toxicology of Metals, Volume I, 1129–37. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003418917-93.

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Praveena, Sarva Mangala, Nurul Syazwani Yuswir, Ahmad Zaharin Aris, and Zailina Hashim. "Potential Health Risk Assessment of Urban Soil on Heavy Metal Content in Seri Kembangan." In From Sources to Solution, 77–81. Singapore: Springer Singapore, 2013. http://dx.doi.org/10.1007/978-981-4560-70-2_15.

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Ballabio, Cristiano, and Roberto Comolli. "Mapping Heavy Metal Content in Soils with Multi-Kernel SVR and LiDAR Derived Data." In Digital Soil Mapping, 205–16. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-8863-5_17.

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Singh, Jaswant, and Brijesh Kumar Yadav. "Adsorption of Heavy Metal with Aged Microplastic in Groundwater Under Varying Organic Matter Content." In Ground Water Contamination in India, 3–10. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-49092-7_1.

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Omotosho, O. A., A. C. O. Uthman, A. T. Atta, J. A. Osunbitan, and G. A. Ogunwande. "Comparative Assessment of Raw and Peroxide-Aeration Recycled Cassava Effluent on Soil Heavy Metal Content." In Proceedings of the 10th International Conference on Energy Engineering and Environmental Engineering, 247–57. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-48204-5_21.

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Semenova, Irina N., Yuliya S. Rafikova, Rezeda F. Khasanova, and Yalil T. Suyundukov. "Heavy Metal Content in Soils and Hair of the Inhabitants Near Copper Zinc Mine (Bashkortostan, Russia)." In Lecture Notes in Earth System Sciences, 847–62. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-21614-6_45.

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Ugulu, Ilker, Zafar Iqbal Khan, Sidrah Rehman, Kafeel Ahmad, and Yunus Dogan. "Heavy Metal Content of Mentha piperita Samples Irrigated with Wastewater and Appraisal of Human Health Risk." In New Prospects in Environmental Geosciences and Hydrogeosciences, 173–76. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-72543-3_38.

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Conference papers on the topic "Heavy metal content"

Jianbao, Fu, Li Shunqun, and Chen Lihang. "Centrifugation method for reducing heavy metal content in sediment." In 2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA). IEEE, 2021. http://dx.doi.org/10.1109/isttca53489.2021.9654727.

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Li, Xiaolan, Bingbo Gao, Yuchun Pan, Yunbing Gao, and Xiaoming Xie. "The soil heavy metal content mapping based on Sandwich model." In 2016 5th International Conference on Agro-geoinformatics (Agro-geoinformatics). IEEE, 2016. http://dx.doi.org/10.1109/agro-geoinformatics.2016.7577616.

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Pavlović, M., Z. Simić, and Gorica Đelić. "DETERMINATION OF HEAVY METALS AND SECONDARY METABOLITES OF „PEUCEDANUM OREOSELINUM“ (APIACEAE)." In 1st INTERNATIONAL Conference on Chemo and BioInformatics. Institute for Information Technologies, University of Kragujevac, 2021. http://dx.doi.org/10.46793/iccbi21.206p.

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The total quantity of metals (Mg, Ca, Ni, Fe, Mn, Zn, Cu) in soil samples and in sixteen different extracts from plant parts of Peucedanum oreoselinum (L.) Moench as well as the content of total phenols and flavonoids in plant extracts was determined. The contents of metals were determined by the atomic absorption spectrometer. Based on the average values of the metal concentration in the soil, they could be arranged in the following sequence: Fe > Ca > Mg > Mn > Zn > Cu > Ni. Soil concentrations of all tested metals were lower than the maximum allowed concentration. The results demonstrated that the analyzed plant extracts contained higher quantities of Ni and Ca. Although the studied species accumulate analyzed metals in different quantities, they are not hyperaccumulators of these metals. Total phenols were determined using Folin-Ciocalteu reagent and their amounts ranged from 1.94 to P. oreoselinum, hyperaccumulation, phenols, flavonoids32.38 mg GA/g. The amounts of flavonoids in plant extracts were in range from 0.69 to 25.83 mg RU/g. We examined the correlation of metals and the phenolic compounds content in the extracts. According to our results the use P. oreoselinum for tea preparation is safe to a great extent for people, because in spite of the determined metal absorption by plant organs, the tea does not contain dangerous quantity of heavy metals. Also, it is suitable for the preparation of teas and herbal extracts due to minimal content of toxic metal (Ni), phenols and flavonoids.

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Angelova, Violina. "HEAVY METAL ACCUMULATION AND CHEMICAL COMPOSITION OF ESSENTIAL OILS OF LEMON BALM (MELISSA OFFICINALIS L.) CULTIVATED ON HEAVY METAL CONTAMINATED SOILS." In Fourth International Scientific Conference ITEMA Recent Advances in Information Technology, Tourism, Economics, Management and Agriculture. Association of Economists and Managers of the Balkans, Belgrade, Serbia, 2020. http://dx.doi.org/10.31410/itema.2020.287.

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Comparative research has been conducted to allow us to determine the content of heavy metals and chemical composition of lemon balm oils, as well as to identify the possibility of lemon balm growth on soils contaminated by heavy metals. The experimental plots were situated at different distances of 0.5 km, and 15 km, respectively, from the source of pollution the Non-Ferrous-Metal Works (MFMW) near Plovdiv, Bulgaria. On reaching the flowering stage the lemon balm plants were gathered. The content of heavy metals in leaves of lemon balm was determined by ICP. The essential oils of the lemon balm were obtained by steam distillation in laboratory conditions which were analyzed for heavy metals and chemical composition was determined. Lemon balm is a plant that is tolerant to heavy metals and can be grown on contaminated soils. Heavy metals do not affect the development of lemon balm and the quality and quantity of oil obtained from it. Forty components were identified in the oils. The quantity of identified compounds corresponds to 98.82-98.83% of the total oil content. Among the detected compounds, beta-citral (neral) (19.31-20.78%), alfa-citral (geranial) (18,65-19,12%), β-caryophyllene (14.76-16.28%), α-cadinol (3.88-4.74%), geranyl acetate (3.49-3.59%), trans-geraniol (3.40-3.51%), germacrene (3.18-3.28%), citronellal (2.94-3.03%), nerol (2.63-2.71%), neryl acetate (2.42 -2.49%) were the major compounds. The essential oil of Melissa officinalis L. can be a valuable product for farmers from polluted regions.

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Koshelkov, A. M., and L. P. Mayorova. "HEAVY METALS IN THE SOILS OF THE CITIES OF BLAGOVESHCHENSK, KHABAROVSK AND KOMSOMOLSK-ON-AMUR." In Современные проблемы регионального развития. ИКАРП ДВО РАН, 2024. http://dx.doi.org/10.31433/978-5-904121-41-9-2024-179-182.

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The lithogenic and technogenic contents of heavy metals and arsenic in the soils of large cities of the Middle Amur region were compared. Characteristic pollution levels and excess ratios are noted. It has been established that the main factors influencing the increased heavy metal content in soils are the volume of pollution emissions, the proximity of geochemical anomalies, granulometric composition and conditions of dispersion of pollutants.

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BIN LI and WENZHONG GUO. "Feasibility Study of Soil Heavy Metal Pb2+ Content Detection Using Terahertz Spectroscopy." In 2013 Kansas City, Missouri, July 21 - July 24, 2013. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2013. http://dx.doi.org/10.13031/aim.20131620908.

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Li, Liangliang, Cong Zhang, and Kun Cao. "Prediction of Heavy Metal Content in Soil Based on AGA-Elman model." In 2022 2nd International Conference on Algorithms, High Performance Computing and Artificial Intelligence (AHPCAI). IEEE, 2022. http://dx.doi.org/10.1109/ahpcai57455.2022.10087458.

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Popescu, Luminita Georgeta. "ANALYSIS OF HEAVY METAL CONTENT TO EVALUATE LEACHING CHARACTERISTICS OF COAL ASH WASTES." In 13th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION. Stef92 Technology, 2013. http://dx.doi.org/10.5593/sgem2013/be5.v1/s20.005.

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Takarina, N. D., D. Ratnasari, and T. Siswantining. "The content of heavy metal zink (Zn) in frozen escolar fish (Lepidocybium flavobrunneum)." In PROCEEDINGS OF THE 3RD INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES 2017 (ISCPMS2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5064162.

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Trajković, Dušan, Aleksandra Perić Grujić, and Dragana Živojinović. "Assesment of measurement uncertainty when determining heavy metal content in fly ash samples." In 37th International Congress on Process Industry. SMEITS, 2024. http://dx.doi.org/10.24094/ptk.024.055.

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Metrology is a science dealing with measurement but also a basic constituent of quality in-frastructure. Its main role is to ensure the appropriate accuracy, precision and reliability of measurement. Measurement is an activity that has been carried out since ancient times, and the results of this process may impact the quality of life to a large extent. According to Mendeleev, science begins where measurements begin. However, each measurement is loaded with corre-sponding measurement uncertainty. This problem is recognized by the international standardiza-tion organization (ISO), as well as by the International Electrotechnical Commission (IEC) in adopting the SRPS ISO/IEC 17025:2017 standard, which is used for accreditation of testing la-boratories. The assessment of measurement uncertainty ensures an increased confidence in the obtained results, especially when comparing the obtained values with legal regulations. This pa-per presents the process of determining combined uncertainty (u), as well as extended uncertainty (U) when examining the amount of heavy metals present in fly ash samples, using the bottom-up method. The identification of the processes in which measurement uncertainty arises has been de-termined using quality tools: flowcharts and cause-effect diagrams. The results obtained in this work showed that the calibration process mostly affects the measurement uncertainty. Moreover, the measurement uncertainty is highest when determining nickel, while it is lowest when determin-ing cadmium.

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Reports on the topic "Heavy metal content"

Busby, Ryan, Thomas Douglas, Joshua LeMonte, David Ringelberg, and Karl Indest. Metal accumulation capacity in indigenous Alaska vegetation growing on military training lands. Engineer Research and Development Center (U.S.), August 2021. http://dx.doi.org/10.21079/11681/41443.

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Permafrost thawing could increase soil contaminant mobilization in the environment. Our objective was to quantify metal accumulation capacities for plant species and functional groups common to Alaskan military training ranges where elevated soil metal concentrations were likely to occur. Plant species across multiple military training range sites were collected. Metal content in shoots and roots was compared to soil metal concentrations to calculate bioconcentration and translocation factors. On average, grasses accumulated greater concentrations of Cr, Cu, Ni, Pb, Sb, and Zn relative to forbs or shrubs, and bioconcentrated greater concentrations of Ni and Pb. Shrubs bioconcentrated greater concentrations of Sb. Translocation to shoots was greatest among the forbs. Three native plants were identified as candidate species for use in metal phytostabilization applications. Elymus macrourus, a grass, bioconcentrated substantial concentrations of Cu, Pb, and Zn in roots with low translocation to shoots. Elaeagnus commutata, a shrub, bioconcentrated the greatest amounts of Sb, Ni, and Cr, with a low translocation factor. Solidago decumbens bio-concentrated the greatest amount of Sb among the forbs and translocated the least amount of metals. A combination of forb, shrub, and grass will likely enhance phytostabilization of heavy metals in interior Alaska soils through increased functional group diversity.

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Kurén Weldon, James, ed. 32nd Annual Report 2023 : Convention on Long-range Transboundary Air Pollution : International Cooperative Programme on Integrated Monitoring of Air Pollution Effects on Ecosystems. ICP IM Programme Centre, Swedish University of Agricultural Sciences, 2023. http://dx.doi.org/10.54612/a.29v7hp6rk6.

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The Integrated Monitoring Programme (ICP IM) is part of the effect-oriented activities under the 1979 Convention on Long-range Transboundary Air Pollution, which covers the region of the United Nations Economic Commission for Europe (UNECE). The main aim of ICP IM is to provide a framework to observe and understand the complex changes occurring in natural/semi natural ecosystems. This report summarizes the work carried out by the ICP IM Programme Centre and several collaborating institutes. The emphasis of the report is in the work done during the programme year 2022/2023 including: • A short summary of previous data assessments • A status report of the ICP IM activities, content of the IM database, and geographical coverage of the monitoring network • Brief summary of forthcoming publication on heavy metal concentrations trend analysis • Update on developing co-operation with eLTER • Proposed workplan for the next period • Report on IM participation in Canadian led mercury sampling • National Reports on ICP IM activities

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Johnson. L51935 Limitations of Cellulosic-Coated Electrodes. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), October 2003. http://dx.doi.org/10.55274/r0010434.

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Cellulosic-coated electrodes (primarily AWS EXX10-type) are traditionally used for stovepipe welding of pipelines because they are well suited for deposition of one-sided welds and are capable of high deposition rates when welding downhill. Despite advances in mechanized welding technology and the development of low-hydrogen consumables suitable for pipeline girth welding, manual welding, using cellulosic-coated electrodes is still widely utilized for pipeline construction throughout the world. Several incidents involving significant hydrogen-assisted cracking in the weld metal of pipeline girth welds made using cellulosic-coated electrodes have been reported recently. Two of these cases required removal of many welds at an expense of over $4 million dollars, in spite of established procedures having been used. The objectives of this project were to identify the primary mechanisms contributing to transverse cracking of field welds and to provide recommendations regarding safe preheat/interpass temperatures that should be utilized when welding heavy-wall pipe and fittings using cellulosic-coated electrodes. Two cases of severe weld metal hydrogen-assisted cracking were investigated. In each case, the composition of the weld metal was substantially richer that would typically be expected for E8010-G electrodes. Subsequent investigation into factors influencing the composition of weld metal from cellulosic-coated electrodes revealed that arc length has a pronounced effect on carbon, manganese, and silicon recovery. The increase in composition observed with variation in arc length could not explain the extremely rich compositions observed in the cracked girth welds, however. Subsequent investigation demonstrated that it was possible to effectively double the manganese concentration and triple the silicon concentration when using cellulosic coated electrodes that have low coating moisture content.

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Савосько, Василь Миколайович, Юлія Віліївна Бєлик, Юрій Васильович Лихолат, Герман Хайльмейер, and Іван Панасович Григорюк. Macronutrients and Heavy Metals Contents in the Leaves of Trees from the Devastated Lands at Kryvyi Rih District (Central Ukraine). КДПУ, 2020. http://dx.doi.org/10.31812/123456789/4151.

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The relevance of these studies was due to the need to clarify the biogeochemical characteristics of woody plant species that grow naturally on devastated lands. The object of this paper: to carry out a comparative analysis of macro nutrients and heavy metals contents in the leaves of trees spontaneously sprouting on the devastated lands at the Kryvyi Rih District. This research was performed at Petrovsky waste rock dump, the Central part of the Kryvyi Rih iron-ore & metallurgical district (Dnipropetrovsk region, Ukraine). The macronutrients (K, Ca, Mg, P and S) and heavy metals (Fe, Mn, Zn, Cu, Pb and Cd) contents in the leaves of three species of the trees (Ash-leaved Maple Acer negundo L., Silver Birch Betula pendula Roth. and Black Locust Robinia pseudoacacia L.) that were collected on devastated lands were assessed. It was established that trees which grow on the Petrovsky dump take place under evident shortage of nutrients (especially K and P) and excess of metals (especially Fe, Mn and Zn). Taking into account the revealed values of macronutrients optimal concentrations and revealed the heavy metals lowest content in the leaves, we assume that Ash-leaved maple and Black locust (compared to the Silver Birch) are more resistant to the geochemical conditions of devastated lands.

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Wang, Yong-Yi, Zhili Feng, Wentao Cheng, and Sudarsanam Suresh Babu. L51939 Weldability of High-Strength Enhanced Hardenability Steels. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), September 2003. http://dx.doi.org/10.55274/r0010384.

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Since the 1970s, the development of high-strength pipeline steels has followed the route of progressively reduced harden ability through lower carbon and alloying element contents. Micro-alloying, controlled rolling (CR), and thermo-mechanical controlled processing (TMCP) have been used extensively to achieve the high-strength and other material property requirements despite the trend towards lower carbon content. The primary driving force behind the evolution of these alloying and processing strategies stems from the concerns over the weld ability, particularly the hydrogen induced cracking (HIC), at ever-increasing strength levels. Accompanying the extensive reliance on micro-alloying, CR, and TMCP, there has been a movement to tighter restrictions on micro-alloy variability, the increased use of heavy reduction at low inter-critical temperatures and, in some instances, the reliance on cold expansion. The objective of this project was to evaluate alternate steels with enhanced harden ability and identify those that would have a potential to (1) meet the high strength/high toughness requirement but without the adverse effects of the early trial heats of micro-alloyed TMCP X80 and X100 line pipe steels, and (2) exhibit sufficient resistance to hydrogen induced cracking (HIC) when welded with processes and consumables representative of state-of-the-art, low-hydrogen field girth welding practices. The focus of the project was on the weld ability and properties of the base metal and the heat-affected zone (HAZ). The selection and development of suitable weld consumables were not part of this project.

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Савосько, Василь Миколайович, Олександр Подоляк, Ірина Олександрівна Комарова, and Олексій Карпенко. Modern Environmental Technologies of Healthy Soils Contaminated by Heavy Metals and Radionuclides. E3S Web of Conferences, 2020. http://dx.doi.org/10.31812/123456789/3784.

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Object of research: to systematize (taking into account the possible consequences to biosphere) the known technologies for ecological restoration of soils contaminated by heavy metals and radionuclides. Only a healing technology should be recognized as one possible methodology for solving any soil problems. For soils contaminated by heavy metals and radionuclides healing patterns is conceptually ordered into the following levels: mission, strategy, technology. The mission of healthy soil should be aimed at maintaining the chemical elements content within the optimum interval. The strategy of healthy soil involves the regulation of individual elements content in the soil. Ex-situ a soil healing technology is implemented outside the original pollution site. In-situ, a soil healing technology is carried out directly on the original pollution site. Excavation of the сontaminated soil layer is the first stage for ex-situ soil restoration. In the future it will be possible: 1) storage of contaminated soil at special landfills, 2) treatment of contaminated soil at a special reactor. All technologies for in-situ healthy of heavy metals contaminated soils can be ordered as: 1) localization, 2) deconcentration, 3) inactivation, 4) extraction.

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Savosko, V., I. Komarova, Yu Lykholat, E. Yevtushenko, and T. Lykholat. Predictive model of heavy metals inputs to soil at Kryvyi Rih District and its use in the training for specialists in the field of Biology. IOP Publishing, 2021. http://dx.doi.org/10.31812/123456789/4511.

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The importance of our research is due to the need to introduce into modern biological education methods of predictive modeling which are based on relevant factual material. Such an actual material may be the entry of natural and anthropic heavy metals into the soil at industrial areas. The object of this work: (i) to work out a predictive model of the total heavy metals inputs to soil at the Kryvyi Rih ore-mining & metallurgical District and (ii) to identify ways to use this model in biological education. Our study areas are located in the Kryvyi Rih District (Dnipropetrovsk region, Central Ukraine). In this work, classical scientific methods (such as analysis and synthesis, induction and deduction, analogy and formalization, abstraction and concretization, classification and modelling) were used. By summary the own research results and available scientific publications, the heavy metals total inputs to soils at Kryvyi Rih District was predicted. It is suggested that the current heavy metals content in soils of this region due to 1) natural and 2) anthropogenic flows, which are segmented into global and local levels. Predictive calculations show that heavy metals inputs to the soil of this region have the following values (mg ⋅ m2/year): Fe – 800-80 000, Mn – 125-520, Zn – 75-360, Ni – 20-30, Cu – 15-50, Pb – 7.5-120, Cd – 0.30-0.70. It is established that anthropogenic flows predominate in Fe and Pb inputs (60-99 %), natural flows predominate in Ni and Cd inputs (55-95 %). While, for Mn, Zn, and Cu inputs the alternate dominance of natural and anthropogenic flows are characterized. It is shown that the predictive model development for heavy metals inputs to soils of the industrial region can be used for efficient biological education (for example in bachelors of biologists training, discipline "Computer modelling in biology").

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Савосько, Василь Миколайович, Ірина Олександрівна Комарова, Юрій Васильович Лихолат, Едуард Олексійович Євтушенко,, and Тетяна Юріївна Лихолат. Predictive Model of Heavy Metals Inputs to Soil at Kryvyi Rih District and its Use in the Training for Specialists in the Field of Biology. IOP Publishing, 2021. http://dx.doi.org/10.31812/123456789/4266.

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The importance of our research is due to the need to introduce into modern biological education methods of predictive modeling which are based on relevant factual material. Such an actual material may be the entry of natural and anthropic heavy metals into the soil at industrial areas. The object of this work: (i) to work out a predictive model of the total heavy metals inputs to soil at the Kryvyi Rih ore-mining & metallurgical District and (ii) to identify ways to use this model in biological education. Our study areas are located in the Kryvyi Rih District (Dnipropetrovsk region, Central Ukraine). In this work, classical scientific methods (such as analysis and synthesis, induction and deduction, analogy and formalization, abstraction and concretization, classification and modelling) were used. By summary the own research results and available scientific publications, the heavy metals total inputs to soils at Kryvyi Rih District was predicted. It is suggested that the current heavy metals content in soils of this region due to 1) natural and 2) anthropogenic flows, which are segmented into global and local levels. Predictive calculations show that heavy metals inputs to the soil of this region have the following values ( mg ∙ m ଶ year ⁄ ): Fe – 800-80 000, Mn – 125-520, Zn – 75-360, Ni – 20-30, Cu – 15-50, Pb – 7.5-120, Cd – 0.30-0.70. It is established that anthropogenic flows predominate in Fe and Pb inputs (60-99 %), natural flows predominate in Ni and Cd inputs (55-95 %). While, for Mn, Zn, and Cu inputs the alternate dominance of natural and anthropogenic flows are characterized. It is shown that the predictive model development for heavy metals inputs to soils of the industrial region can be used for efficient biological education (for example in bachelors of biologists training, discipline “Computer modelling in biology”).

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Савосько, Василь Миколайович, Юлія Віліївна Бєлик, Юрій Васильович Лихолат, Герман Хайльмейер, and Іван Панасович Григорюк. Macronutrients and Heavy Metals Contents in the Leaves of Trees from the Devastated Lands at Kryvyi Rih District (Central Ukraine). E3S Web of Conferences, 2020. http://dx.doi.org/10.31812/123456789/3785.

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This research was performed at Petrovsky waste rock dump, the Central part of the Kryvyi Rih iron-ore & metallurgical district (Dnipropetrovsk region, Ukraine). The macronutrients (K, Ca, Mg, P and S) and heavy metals (Fe, Mn, Zn, Cu, Pb and Cd) contents in the leaves of three species of the trees (Ash-leaved maple, Silver Birch and Black locust) that were collected on devastated lands were assessed. It was established that trees which grow on the Petrovsky dump take place under evident shortage of nutrients (especially K and P) and excess of metals (especially Fe, Mn and Zn). It is revealed that Ash-leaved maple and Black locust are more resistant to the geochemical conditions of devastated lands. In this regard, these species of trees can be recommended for forest restoration & reforestation on devastated lands.

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Савосько, Василь Миколайович, Юлія Віліївна Бєлик, Юрій Васильович Лихолат, Герман Хайльмейер, Іван Панасович Григорюк, Ніна Олександрівна Хромих, and Тетяна Юріївна Лихолат. The Total Content of Macronutrients and Heavy Metals in the Soil on Devastated Lands at Kryvyi Rih Iron Mining & Metallurgical District (Ukraine). Geology-dnu-dp.ua, 2021. http://dx.doi.org/10.31812/123456789/4286.

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The relevance of the research is due to the need to develop technologies for phytoremediation of the devastated lands in the mining and metallurgical regions of Ukraine and the world. In this regard, the creation of tree plantations adapted to the ecological conditions of such territories is considered by many experts as the most promising option for innovative technologies. However, the development of artificial woodlands requires knowledge of the pedogeochemical character- istics of devastated lands. The aim of the work was to carry out a comparative analysis of the macronutrients and heavy metals gross forms content in the soils of the devastated lands of the Kryvyi Rih mining and metallurgical region. The field studies focused on five contrasting monitoring sites of the Petrovsky dump (Central Kryvorizhzhya), which has a typical age and composition of rocks for the region. Soil sampling, drying, sieving, and sample preparation (sintering in a muffle furnace) were done in accordance with classical techniques. The concentrations of macronutrients (potassium, sodium, calcium, magnesium, sulfur, and phosphorus) and heavy metals (iron, manganese, zinc, copper, lead, and cadmium) were determined using an Inductively Coupled Plasma Mass Spectrometry (ICP- MS) X-Series 2 (Thermo Fisher Scientific, USA). The analytical part of our research was carried out on the basis of the laboratory of the Institute of Biosciences, Freiberg University of Technology and Mining Academy (Freiberg, Germany). At monitoring sites, significant differences were found in the content of macronutrients gross forms, and their variation relative to the control values as well. Potassium and sodium concentrations generally differed slightly or were close to control levels. The results of determining the content of calcium, magnesium and phosphorus indicate a significant deficiency or excess of these macronutrients in the soils of the devastated lands. An increased sulfur content was found in the soils of all monitoring sites, in some cases 4 times higher than the control level. The measured content of gross forms of iron, manganese, copper, cadmium and, partially, zinc in the soils of different monitoring sites exceeded the control values by 5.5 – 5.9 times. Thus, the analysis of the research results made it possible to establish that the soils of the devastated lands of the Petrovsky dump are characterized by unfavorable properties for the growth of most species of woody plants.

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