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Artykuły w czasopismach na temat "SEDIMENT POLLUTION INDEX"
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Qiu, Ji Cai. "The Contamination Status of Heavy Metal in the Sediment of Beng River and the Protection for the Ecological Safety Engineering". Advanced Materials Research 726-731 (sierpień 2013): 1809–12. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.1809.
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To find out the heavy metal pollution condition from the Beng River sediment, we see the region from Beng River Rubber Dam to the Yimeng Road Bridge as research object.We monitored and surveyed on the three kinds of metal components (Cu, Zn, Cd) in the sediments from eight sectionsthe. With reference to the relevant domestic standards, we established sediment pollution evaluation criteria suitable for the region., We conducted the evaluation of ecological risk and pollution levels with the detection results by standard index of the potential ecological risk index and Nemerow France France. The results showed that: the heavy metals ecological risk index in Sediment from Beng River Rubber Dam to the Yimeng Road bridge section, Nemerow pollution index was 6.95, It was heavily polluted. This showed that the heavy metals in river sediment pollution was very serious.
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Esmaeilzadeh, Marjan, Elham Mahmoudpuor, Somayeh Haghighat, Sara Esmaeilzadeh, Hamide Aliani i Najmeh Yazdanfar. "Contamination and ecological risk assessment of trace elements in sediments of the Anzali Wetland, Northern Iran". Water Science and Technology 84, nr 9 (18.10.2021): 2578–90. http://dx.doi.org/10.2166/wst.2021.455.
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Abstract In this paper, concentrations of some heavy metals in surficial sediments of the International Anzali Wetland were measured, this wetland is located in the northern part of Iran. Sediment pollution levels were examined and analyzed using reliable pollution indices including Pollution Load Index (PLI), Geoaccumulation Index (Igeo) and Enrichment Factor (CF), and finally it was revealed that heavy metal pollution ranged from low to moderate loads in the wetland. According to Sediment Quality Guidelines (SQGs) and Ecological Risk Index (ERI), it was concluded that As and Ni may have significant toxic impacts on aquatic organisms and also according to Effect Range Median (ERM), the toxicity probability of sediments in the Anzali wetland was estimated at 21%.
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C., Kougblenou, Atinkpahoun C., Saizonou M., Youssao A. i Soclo H. "STUDY OF CONTAMINATION BY METALLIC ELEMENTS IN COASTAL SEDIMENTS: CASE OF THE COTONOU CHANNEL". International Journal Of Advanced Research 10, nr 04 (28.04.2022): 157–67. http://dx.doi.org/10.21474/ijar01/14529.
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Coastal aquatic ecosystems are environments increasingly affected by human activities due to urban discharges and their use as dumps. The objective of this study is to determine the profiles of metallic elements concentration (Al, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Cd, and Pb) of Cotonou channel sediments and to evaluate their quality. For this, surface sediments (0-5cm) were sampled at 13 sites along the channel. Thus,Geoaccumulation Index (Igeo), Enrichment Factor (EF) and Sediment Pollution Index (SPI) were calculated to assess the chemical quality of these sediments. The metal contents of the sediments follow the following order of abundance: Fe >Al>Mn> Zn >Cr>Cu > Co> Ni >Pb> As> Cd. The Igeo geo-accumulation index and the Enrichment Factor FE reveal moderate polymetallic contamination by several elements. The results show Fe, Co, and Ni being the most concerning. As for the Sediment Pollution Index (SPI), it reports low, moderate and high pollution of sediments.
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Wang, Cong, Kan Wang, Wuquan Zhou, Yong Li, Guoqing Zou i Zhi Wang. "Occurrence, Risk, and Source of Heavy Metals in Lake Water Columns and Sediment Cores in Jianghan Plain, Central China". International Journal of Environmental Research and Public Health 20, nr 4 (19.02.2023): 3676. http://dx.doi.org/10.3390/ijerph20043676.
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Heavy metal pollution in lakes is an issue that endangers ecosystems worldwide; however, the vertical properties of heavy metals in the water columns and sediment cores of lakes have been rarely evaluated simultaneously. This study revealed the pollution, risks, and sources of heavy metals from surface water to deep sediments in four typical shallow lakes located in central China. The results showed that the concentrations of heavy metals, except Hg, had insignificant stratification in the water column. Heavy metals had three vertical profiles in sediment cores, i.e., the concentrations of As, Hg, Cd, Pb, and Mn in the surface sediment (0–9 cm) were higher than that in the bottom sediment (9–45 cm) (p < 0.05), the concentrations of Cr, Co, Fe, and Ni in the bottom sediment were higher than the surface sediment (p < 0.05), and the concentrations of Cu and Zn had no significant stratification. The Nemerow pollution index showed that heavy metal pollution dominated by Hg reached slight–moderate levels, and had higher levels in surface water than that in bottom water (p < 0.05). The Nemerow integrated risk index showed that the heavy metals had moderate–extreme potential ecological risks (Cd contributed 43.4%) in the sediments, and the ecological risk in surface sediment was significantly higher than that in bottom sediment (p < 0.01). Principal component analysis revealed that agriculture, transportation, and chemical industry were the major sources of heavy metals in water and surface sediments, while agriculture and steel-making were the primary sources in bottom sediments. This study provides valuable data and insight for the control of heavy metal pollution in lakes with high human activity loads.
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Mohiuddin, KM, MM Alam, Istiaq Ahmed i AK Chowdhury. "Heavy metal pollution load in sediment samples of the Buriganga river in Bangladesh". Journal of the Bangladesh Agricultural University 13, nr 2 (20.07.2016): 229–38. http://dx.doi.org/10.3329/jbau.v13i2.28784.
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A study was conducted to assess the level of Cr, Pb, Cd, Ni, Zn, Cu, Fe and Mn contamination in the sediment samples of the Buriganga river, at the Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh. Total 14 sediment samples were collected from different areas of upstream of the Buriganga river. The mean concentrations of total Cr, Pb, Cd, Ni, Fe, Cu, Zn and Mn in the sediment samples were 173.4, 31.4, 1.5, 153.3, 481.8, 344.2, 12989 and 4036 ?g g-1, respectively. The range of pH and EC of sediment were 5.87-8.21 and 230-707 ?S cm-1, respectively. The mean value of organic matter in sediment samples was 13.4%. Heavy metal concentrations in sediment were compared with geochemical background and standard values, previous report on the Buriganga river and other rivers in Bangladesh. The average concentration of Cr, Pb and Ni in sediments of the Buriganga river is almost twice of the geochemical background i.e. average worldwide shale standard and continental upper crust value, Cd and Zn is about five times and Cu content is about ten times higher than the geochemical background values. Average concentration of Cr, Cu and Ni exceeded the severe effect level (SEL) values, where as Pb, Cd and Zn exceeded toxicity reference values (TRV). However, the concentration of heavy metal in the sediment samples of the Buriganga river for the year 2009 of the same river reported by corresponding author was relatively higher than this study average. The average Enrichment factors (EFc) for Zn, Cu, Mn and Cd reflects extremely contaminated pollution level which implies that these metals originated from point source of pollution and very severely enriched in river sediments. The pollution load index (PLI) of sediments of the studied region varied from 1.61-7.51. The geoaccumulation index (Igeo) for Cu of five locations was greater than 3.0, which exhibited strongly polluted sediment quality. The Igeo for Mn in 11 locations and Zn in 12 sites were greater than 1.0, indicated moderately polluted sediment quality. Heavy metal pollution intensity in the Buriganga river water and sediments signaled alarming condition for city dwellers and aquatic ecosystem of the river. Sustainable steps and continuous monitoring on pollution prevention and cleanup operation is suggested to minimize pollution.J. Bangladesh Agril. Univ. 13(2): 229-238, December 2015
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Song, Yu Jia, i Hui Qing Liu. "Distribution of Heavy Metals in Urban Gully and their Pollution Assessment". Advanced Materials Research 255-260 (maj 2011): 2977–80. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.2977.
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Set 5 sample sections in a certain gully area in the tributary of Iton River from upstream to downstream of Changchun city, which locates in the northern part of China, then respectively collect sediments and soils which are proximal and distal away from the river bank, test the heavy metal content of Zn, Cu, Cd, Pb and conduct pollution assessment. The result shows that: the content of Zn in sediment is in the state of light pollution, Cu has an obvious accumulated tendency, Pb，Cd are basically in a state of local background value. Therefore, the pollution index of sediment is in a state of slightly pollution, the proximal bank-side is in the safe state, while the distal bank-side is in a state of alert. The main reasons that cause heavy metals pollution and accumulation are traffic and agricultural pollutions.
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Pan, Hanjiang, Guohua Zhou, Rong Yang, Zhizhong Cheng i Binbin Sun. "Heavy Metals and As in Ground Water, Surface Water, and Sediments of Dexing Giant Cu-Polymetallic Ore Cluster, East China". Water 14, nr 3 (25.01.2022): 352. http://dx.doi.org/10.3390/w14030352.
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Heavy metals and As (HMs) pollution in mining areas are a widespread environmental concern. In this study, ground water, surface water, and sediment samples around the Dexing area, one of the largest Cu-polymetallic ore clusters in China, were collected to examine the concentrations and distributions of As, Cd, Cr, Cu, Hg, Pb, and Zn. Pollution indices, geo-accumulation index, and potential ecological risk index were used to estimate the pollution characteristics and ecological risk of HMs. The results show that the major pollutants in the surface water were Cd, Cu, Zn, and Pb, while the dominant ecological risk of HMs in the sediments originated from Cu, As, Hg, and Cd. Moreover, HMs in the surface water and sediments exhibited substantial spatial heterogeneity in the study area, indicating a severely disturbed environment due to mining activities. The proportions of HM pollutions were higher in the Dexing River and its tributaries than in the Le’an River and its tributaries. The surface water pollution was predominant at the tributaries closest to the mine area, while the sediment contamination has been expanded several kilometers downstream of the major rivers. Overall, the ecological risk of HMs was higher in the sediments than in the surface water.
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Edward, Edward. "Penilaian pencemaran logam berat dalam sedimen di Teluk Jakarta". Depik 9, nr 3 (30.09.2020): 403–10. http://dx.doi.org/10.13170/depik.9.3.16800.
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Contamination and pollution of heavy metals in the bottom sediment can pose serious issues to marine organisms and human health. Jakarta Bay which is located adjacent to the capital city of Indonesia is notorious for its pollution problems. The purpose of this research was to assest the contamination levels of heavy metals Hg, Pb, and Cd in sea-bottom sediments based on an index analysis approach (contamination factors, geo accumulation index, pollution load index). Sediment samples were collected from 31 stations in Jakarta Bay. Heavy metal concentration was measured using Atomic Absorption Spectrophotometer (AAS). The results showed that an average mercury (Hg) concentration ranged from 0.150 to 0.530 µg.g-1 with an total average of 0.362 µg.g-1, Lead (Pb) from 14.870 to 35.650 µg.g-1 with an total average of 21.774 µg.g-1, Cadmium (Cd) 0.110-0.280 µg.g-1 with an total average of 0.190 µg.g-1.The average concentration of Hg, Pb, and Cd is still lower than the sediment quality threshold values set by the Office of the State Minister of Environment of Indonesia 2010. The results of the index analysis showed that the average value of contamination factor (CF) are Hg 0.685, Pb 0.558, and Cd 0.380 respectively (low contamination) and geo accumulation index values are Hg 0.237, Pb -1.655, and Cd 0.069 respectively (unpolluted to moderate polluted). Overall, based on the pollution load index value is -0,511 (PLI 1), sediments in these waters are categorized as not yet polluted by Hg, Pb and Cd. This situation is so necessary to be maintained, that in order for the preservation of marine resources will remain.Keywords: Jakarta Bay, sediment, pollution, heavy metals, assessmentABSTRAKKontaminasi dan pencemaran logam berat pada sedimen dasar dapat menimbulkan masalah yang serius bagi biota laut dan kesehatan manusia. Teluk Jakarta yang terletak berdekatan dengan ibu kota Indonesia terkenal karena masalah pencemarannya yang parah. Tujuan penelitian ini adalah untuk menilai tingkat kontaminasi logam berat Hg, Pb dan Cd dalam sedimen dasar laut berdasarkan pendekatan analisis indeks. Contoh sedimen diambil dari 31 stasiun penelitian di Teluk Jakarta. Kadar logam berat diukur dengan alat Spektrofometer Penyerapan Atom. Hasil penelitian menunjukkan kadar Hg rerata berkisar 0,150-0,530 µg. g-1 dengan rerata total 0,362 µg. g-1, Timbal (Pb) 14,870-35,650 µg. g-1 dengan rerata total 21,774 µg. g-1, Kadmium (Cd) 0,110-0,280 µg. g-1 dengan rerata total 0,190 µg.g-1. Kadar rerata Hg, Pb dan Cd masih lebih rendah dari nilai ambang batas kualitas sedimen yang ditetapkan oleh Kantor Menteri Negara Lingkungan Hidup Indonesia 2010. Hasil analisis indeks menunjukkan nilai rerata faktor kontaminasi (CF) berturut-turut adalah Hg 0,685, Pb 0,352 dan Cd 0,380 (kontaminasi rendah) dan nilai indeks geo akumulasi berturut-turut adalah Hg 0,227, Pb 1,098 dan Cd 0,633 (tidak tercemar sampai tercemar sedang). Secara keseluruhan, berdasarkan nilai indeks beban pencemaran yakni -3.772 (PLI 1), sedimen di perairan ini termasuk kategori belum tercemar oleh Hg, Pb dan Cd. Keadaan ini perlu dipertahankan, agar kelestarian sumberdaya laut tetap terjaga.Kata kunci: Teluk Jakarta, sedimen, pencemaran, logam berat, penilaian
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Et al., Issa. "Evaluation of Some Trace Elements Pollution in Sediments of the Tigris River in Wasit Governorate, Iraq". Baghdad Science Journal 17, nr 1 (1.03.2020): 0009. http://dx.doi.org/10.21123/bsj.2020.17.1.0009.
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The main objectives of present study are to evaluate the trace elements pollution in the sediment of the Tigris River and drainage canals in Wasit Governorate, Iraq. Assessment of trace elements pollutants were conducted for 18 sediment samples collected in March 2017. Trace elements were analyzed in sediment Tigris River samples in Wasit Governorate. This metal pollution was evaluated using geo-accumulation (I-geo) index, Contamination Factor (CF) and Pollution Load Index (PLI). According to these statistical indices, the sediments collected from Tigris River in the study area are highly polluted with Titanium (71.9 ppm), Nickel (226.6 ppm) Chromium (425.2 ppm), Cadmium (2ppm) and Molybdenum (15.8 ppm) while the sediments were moderately polluted with Cobalt (25.1 ppm), Strontium (839.3 ppm), Copper (56.2), Manganese (106.1ppm), Vanadium (135 ppm), Niobium (9.79 ppm). However, the sediments of the Tigris River is not polluted by Lead, Barium, Gallium, Rubidium and, Zinc. Metals concentration levels in the sediments of the drainage canals that discharged into the Tigris River showed higher concentrations than the Tigris sediments in Ta, V, Ni, Cu, Ga, Br, Sr and Mo.
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Akesh, Ammar Ashour. "ANALYTICAL STUDY FOR HEAVY METALS POLLUTION IN SURFACE WATER AND SEDIMENT FOR SELECTED RIVERS OF BASRAH GOVERNORATE". Kufa Journal of Engineering 8, nr 2 (17.07.2017): 105–18. http://dx.doi.org/10.30572/2018/kje/821165.
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Concentration of 2 heavy metals; lead and mercury (Pb and Hg) in rivers and sediments soil were studied at different sites in Basrah. In this study, the effect of lead and mercury pollutions is studied together with determining their locations in the surface water and sediments at some areas in the South of Iraq (Basrah Governorate) particularly in the upper areas of the Arabian Gulf and in its northern part. These seven locations are: Qurnah, Madinah, Deir, Ashar, Abo Al–Khasib, Zubair and Um Qasir. The effect of the lead and mercury concentration on surface water and sediments analysed during 2014-2015 quarterly. Standardized method have been followed in analysing and comparison the surface water standards and sediment soil just to determine the percentage of lead and mercury pollution and assesse the values with standard pollution index. Overall concentrations of Pb in the rivers ranged from 0.44-4.5 mg/l for surface water and soil sediment samples ranged from 0.0-7.36 mg/kg, and for Hg in the rivers from 0.0003-0.006 mg/l and soil sediment samples ranged from 0.0005-0.009 mg/kg. The concentration of heavy metals in the surface water and soil display the following decreasing trend: Pb>Hg. From this result, found that levels of heavy metal in surface water and soil near industrial areas give higher value compared with other locations in Basrah. The Pollution index revealed that Pb and Hg give low contamination. The highest concentrations values are recorded in Abo Al-Khasib (7.63 ppm) for the underground sediments, the lowest concentrations values are recorded in Madina for the depth sediments. The highest concentrations are recorded in Al-Deer (0.009 ppm) for the mercury pollution. Results of combined heavy metal concentration and heavy metal assessment indicate that industrial activities and traffic emission represent most important sources for Hg and Pb. The pollution Index were calculated for the two pollutants concentrations at the rivers and soils.
Rozprawy doktorskie na temat "SEDIMENT POLLUTION INDEX"
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Brady, James P. "Heavy metals in the sediments of Northern Moreton Bay, Queensland, Australia". Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/89686/6/89686%28thesis%29.pdf.
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This project was the first comprehensive assessment of heavy metals to be conducted in the sediments of Northern Moreton Bay since the 1970s and found that shipping and shipping related activities contributed significantly to the level of sediment contamination in the area. The study was also used to develop and test new methods of assessing heavy metal sediment quality.
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Duodu, Godfred Odame. "Characterisation, source apportionment and ecological risk assessment of some pollutants in Brisbane river sediment". Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/103672/1/Godfred%20Odame_Duodu_Thesis.pdf.
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This thesis presents the first simultaneous analysis of heavy metals and organic residues in Brisbane River sediment after the 2011 and 2013 floods. New methods for rapid analysis of elements in sediment and assessment of ecological risk were developed. The thesis provides crucial information regarding levels, distribution, sources and ecological risks of the pollutants in the sediment. This will assist in risk management and formulation of effective pollution mitigation. The generic outcomes of this thesis are expected to provide essential guidance for monitoring and regulation of pollutants in urban waterways worldwide.
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Stern, André Gianotti. "Parâmetros texturais de sedimentos para elaboração de Cartas de Sensibilidade Ambiental ao Derramamento de Óleo - Cartas SAO". Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/44/44140/tde-18122007-145313/.
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Derramamentos de petróleo geraram o aumento da atenção de órgãos governamentais e civis quanto a estudos e técnicas para minimizar os danos aos recursos ambientais e socioeconômicos causados por este tipo de acidente. O desenvolvimento de técnicas e os estudos relacionados à prevenção e resposta aos acidentes busca maior eficiência na resposta à contingência e à diminuição dos danos ambientais e socioeconômicos causados na área atingida. A Carta de Sensibilidade Ambiental ao Derramamento de Óleo (Carta SAO) é uma importante ferramenta para a diminuição de danos causados ao ambiente, para o planejamento ambiental na prevenção e na reposta a acidentes em locais de armazenamento e transporte de hidrocarbonetos, tais como dutos, ferrovias, rodovias, etc. Na Carta SAO, para áreas de exposição de sedimentos e rochas sedimentares, procura-se quantificar e qualificar uma determinada área que apresente vulnerabilidade e sensibilidade ao óleo, ou seja, estipular a área e as características intrínsecas do terreno que apresenta alguma probabilidade de ser atingido por óleo, considerando também atividades de resposta. As características dos sedimentos existentes em áreas vulneráveis permitem a determinação de sua sensibilidade, assim buscou-se estudar os parâmetros sedimentares mais influentes na determinação da sensibilidade ambiental do terreno, como a granulometria e seleção, os quais influenciam a porosidade e permeabilidade do terreno, e o cruzamento dessas informações com a declividade do terreno. A fim de testar a eficiência desses parâmetros, o estudo foi aplicado na Bacia do Ribeirão Tamanduá, na região de Cravinhos (SP), por ser interceptada pelo Duto OSBRA e a área de exposição dos arenitos da Formação Botucatu.Oil spills have resulted in increased awareness among government and private agencies regarding studies and techniques to minimize damages caused by this type of accident to environmental and socio-economic resources. The development of techniques and the studies for prevention and response to accidents is intended to achieve greater effectiveness in dealing with this type of contingency and to decrease the environmental and socio-economic damage to the areas affected by oil spills. The Environmental Sensitivity Index Map for Oil Spills (ESI Map) is an important tool that helps to decrease the damage caused to the environment. It is also useful in planning prevention and responding to accidents in storage areas and in transporting hydrocarbons, in ducts, by rail, road, etc. The purpose of the ESI Map is to quantify and qualify certain areas of exposed sediments and sedimentary rocks that are vulnerable or present sensitivity to oil. In other words, stipulate the area and the intrinsic characteristics of the ground that may receive an oil spill, and considering the response actions. The characteristics of existing sediments in vulnerable areas allow the determination of the area\'s sensitivity. As a result, the study focused on the sedimentary parameters with greatest influence in determining the area\'s environmental sensitivity, such as granulometry and grain selection, which have an influence in the ground\'s porosity and permeability, and cross-referencing this information with the declivity of the ground. In order to test the efficiency of these parameters, the study was implemented in the Bacia do Ribeirão do Tamanduá, in the Cravinhos (SP) region, because it intercepts the OSBRA oil pipeline and an area with exposed sandstone from the Botucatu Formation.
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Sirajuddin, Ayesha Tasneem. "Impact of atmospheric nitrogen pollution on belowground mycorrhizal fungal community structure and composition in the San Bernardino Mountains". Diss., UC access only, 2009. http://proquest.umi.com/pqdweb?index=83&did=1874479991&SrchMode=1&sid=1&Fmt=7&retrieveGroup=0&VType=PQD&VInst=PROD&RQT=309&VName=PQD&TS=1270233151&clientId=48051.
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Sukkampatti, Palanisamy Saravanan. "Empreinte géochimique urbaine dans la mégapôle de Chennai sur les sédiments de rivière : gradient amont-aval, sources et résilience". Thesis, Tours, 2019. http://www.theses.fr/2019TOUR4016.
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Dans cette étude, l’état actuel de la pollution des rivières Adyar et Cooum, a été déterminé. Ce sont les deux rivières importantes parmi les six voies navigables principales de la mégapole de Chennai (Tamil Nadu, Inde) qui a connu une urbanisation importante au cours des trois dernières décennies. Cette étude vise trois objectifs principaux: (i) empreinte géochimique de la mégapole sur les sédiments des rivières (ii) apparition de perturbateurs endocriniens: étude préliminaire sur les HAP, les PBDE, les PCB et les phtalates (iii) Influence du risque de mousson de 2015 sur le niveau de pollution par les oligo-éléments de 2 principaux cours d'eauIn this study, an attempt is made to ascertain the present pollution status of Adyar and Cooum River, which are the two important rivers among the six main waterways in the Chennai Megacity, Tamil Nadu, India and greatly influenced by urbanisation in the past three decades. This study is designed 3 main objectives (i) Geochemical footprint of megacity onto river sediments (ii) Endocrine disruptor occurrence: Preliminary study for PAHs, PBDEs, PCBs and Phthalates (iii) Influence of 2015 monsoon hazard onto trace element pollution level of 2 main rivers
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SHAN, VANDANA. "ASSESSMENT OF NUTRIENT LOADING AND WATER QUALITY IN A TROPICAL WETLAND". Thesis, 2019. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16919.
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Water resources have been associated with the development of human civilization from historical time period. Excessive and improper use of agrochemicals in crop fields and unscientific agricultural activities in catchment area can cause a serious threat in wetland ecosystem. The present study has been done to determine nutrient loading and water quality of surface water in a tropical wetland and suggested applicable management strategies for long term use of wetland. For this purpose, various physico-chemical parameters and heavy metal content in water and sediment samples were investigated spatially and seasonally during the time period of two years. Carlson Trophic status index and Gaardner and Gran method were used to determine trophic status and productivity of wetland respectively. Multivariate statistical techniques, principal component analysis (PCA) /Factor analysis (FA), cluster analysis (CA) were computed to determine relationship between parameters and their influence on water quality with possible contamination sources in wetland respectively. Area distribution within the study area was determined by using polygon feature in google earth map which revealed that permanent green belt persisted throughout the study period with varying water level and vegetation growth in different seasons. A significant variation among physico-chemical parameters, nutrients and heavy metals, was observed seasonally whereas minimum variations were investigated spatially in water and sediments of wetland. Seasonal trend for major pollutants in wetland observed with their decreasing concentration as premonsoon > monsoon > post-monsoon confirming that excessive evaporation from wetland surface will concentrate the water with inorganic salts and nutrients. Contamination from catchment area and backflow water of drain no 8 (in monsoon) notably influences various physico-chemical properties of sediments as well as water in wetland. Also agrochemicals like number of pesticides contribute different types of heavy metals in wetland systems which further declined quality of water and sediments and bioaccumulate in various biotic species within wetland. The growth of submerged vegetation helped in improving water quality by adding photosynthetically-produced oxygen to water and by filtering the suspended impurities. But, the addition of wastewater from adjoining villages and runoff from nearby fields has resulted in increased concentration of nutrients (phosphates and nitrates) and heavy metals in monsoon season. Since these chemical species cause eutrophication and impart toxicity, respectively, the health of ecosystem and aquatic life is affected adversely. Besides preliminary investigation of physico-chemical parameters along with nutrient and
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heavy metal concentration, distinct approaches were implemented to assess the pollution status of wetland water and sediment in research area. For this purpose, various water quality indices, heavy metal pollution index (HPI); heavy metal evaluation index (HEI); degree of contamination (Cd); and water quality index (WQI) were incorporated to define suitability of water in irrigation and aquatic use. Results obtained during the analysis classified water appropriate for irrigation and aquatic life except the regions adjoined to rural habitation. Various metal pollution indices viz. enrichment factor (EF), contamination factor (CF); degree of contamination (DC), pollution load index (PLI), geo-accumulation index (Igeo), sediment pollution index (SPI) in sediments were analysed to determine degree of contamination along with their sources of origin either natural or anthropogenic. Sediments were found minimum to significantly enriched with Cd, Cr, Zn, Ni, Cu and Pb, heavy metals, indicate their anthropogenic source of origin wherein Cd possessed high geo-accumulation index except all other studied heavy metals. Degree of contamination below total number of studied heavy metals, confirms their decreased contamination in wetland sediments. Based on Sediment Pollution Index, sediments were found low to moderately contaminated with SPI in range between 0 to 2, indicating natural source of origin. Also well defined seasonal changes in primary productivity were observed with increased trend from monsoon to post-monsoon and then pre-monsoon. Carlson Trophic Status Index classified water of Bhindawas wetland in hypereutrophic category. In order to avoid further degradation and declining wetland water quality and to eventually restore the beneficial uses of the wetland, proper management strategies including reduced agro-chemicals (fertilizers and pesticides) use in catchments should be exercised or adopted. Also proper rules and guidelines should be prepared for the trophic status of freshwater bodies in the nation by making bottom-up-down discussion.
Części książek na temat "SEDIMENT POLLUTION INDEX"
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Dauvalter, V. "Heavy Metal Concentrations in Lake Sediments as an Index of Freshwater Ecosystem Pollution". W Disturbance and Recovery in Arctic Lands, 333–51. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5670-7_19.
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Pramod Kumar, Madri, Tella Lakshmi Prasad, Kothapalli Nagalakshmi, Nadimikeri Jayaraju i Ballari Lakshmanna. "Concentrations of Heavy Metals as Proxies of Marine Pollution along Nellore Coast of South District, Andhra Pradesh". W Heavy Metals - Their Environmental Impacts and Mitigation [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.95275.
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Bottom sediment samples from six stations were sampled in pre monsoon 2016, from the Govindampalli – Durgarajupatnam (GP-DP) coast. Heavy metals viz., Fe, Mn, Cr, Cu, Ni, Pb, Zn and Cd analysis was carried out by using ICP-OES, and the average concentrations are as follows Fe > Mn > Zn > Cr > Pb > Ni > Cu > Cd. Various environmental indices like Factor Analysis (FA), Geo-accumulation Index (Igeo), Enrichment Factor (EF) and Pollution Load Index (PLI) were applied to the chemical data in order to know the levels of contamination and factors contributing to the pollution. Correlation coefficient results exhibits significant positive and negative relationships among Fe, Mn, Pb, Zn, Cd. All the environmental indices suggest that heavy metals were present at higher concentrations and the impacts of anthropogenic activities are crucial that serves as source of heavy metals in the zone. Relatively, maximum number of heavy metals viz., Fe, Ni and Pb were accumulated at the brackish environment i.e., at confluence of Swarnamukhi river (GP-S Station).
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Diarrassouba Tuo, Adama, Issiaka Ben Chérif Traoré i Albert Trokourey. "Use of Several Pollution Indices for Metal Contamination Assessment in Aquatic Ecosystems, A Case Study, Ebrié Lagoon-Côte d’Ivoire". W Heavy Metals - Recent Advances [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.110244.
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In aquatic ecosystems, trace metals (TMs) are widely studied due to their harmful effects on living organisms and humans. The aim of the present study was to use different pollution indices to characterize the sediments contamination with six TMs (As, Cd, Fe, Hg, Mn and Pb). Sediments samples were collected in April 2006 with a Van Veen grab at five stations located in the Ebrie Lagoon (Côte d’Ivoire). TMs concentrations were determined using an ICP-MS Instrument for the calculation of the contamination index (CI), contamination factor (CF), pollution load index (PLI), enrichment factor (EF) and Muller’s index of geoaccumulation (Igeo). The CI revealed the sediments contamination in As, Cd and Pb, while CF highlighted their contamination in Hg, As, Fe and Cd. Regarding the PLI, the sediments were uncontaminated with TMs. The EF showed the sediments enrichment with Hg, Pb and As, while the Igeo revealed their pollution with As, Fe, Pb and Cd. In conclusion, the PLI is a useful tool for different locations characterization, while the others (CI, CF, EF, and Igeo) allow individual characterization regarding each TM. Due to high contents in As, Cd and Pb, the studied area need a particular attention.
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Kumar, Vinod, Shevita Pandita, Anket Sharma, Vishal Sharma, Mamta Sharma i Artemi Cerda. "Combination of contamination indices and ecological risk assessment index for evaluation of pollution level in sediments". W Heavy Metals in the Environment, 99–117. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-821656-9.00006-7.
Pełny tekst źródłaStreszczenia konferencji na temat "SEDIMENT POLLUTION INDEX"
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Singovszka, Eva. "COMPARISON OF POLLUTION LOAD INDEX IN BOTTOM SEDIMENTS OF SIX RIVERS ON EAST OF SLOVAKIA". W 18th International Multidisciplinary Scientific GeoConference SGEM2018. Stef92 Technology, 2018. http://dx.doi.org/10.5593/sgem2018/5.2/s20.031.
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Favas, Paulo. "ASSESSMENT OF ARSENIC AND HEAVY METALS POLLUTION IN STREAM SEDIMENTS AFFECTED BY MINING USING GEOACCUMULATION INDEX". W 14th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION. Stef92 Technology, 2014. http://dx.doi.org/10.5593/sgem2014/b51/s20.011.
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