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Journal articles on the topic '(halogenated) volatile organic compounds'

Author: Grafiati

Published: 12 May 2023

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1

McGrath, Michael. "Catalytic destruction of halogenated volatile organic compounds." Applied Catalysis B: Environmental 3, no. 2-3 (February 1994): N12. http://dx.doi.org/10.1016/0926-3373(94)80002-2.

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2

Laturnus, Frank, Christian Wiencke, and Heinz Klöser. "Antarctic macroalgae — Sources of volatile halogenated organic compounds." Marine Environmental Research 41, no. 2 (January 1996): 169–81. http://dx.doi.org/10.1016/0141-1136(95)00017-8.

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3

HIROSE, YOSHIFUMI, RYUJI MATSUMOTO, SAYURI YAMADA, TOMIO NOZAKA, MASAZO ISHINO, and AKIO TANAKA. "The Determination of Volatile Halogenated Organic Compounds in Drugs." Eisei kagaku 40, no. 3 (1994): 298–301. http://dx.doi.org/10.1248/jhs1956.40.298.

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4

Tratnyek, Paul G., Elizabeth Edwards, Lucy Carpenter, and Sarah Blossom. "Environmental occurrence, fate, effects, and remediation of halogenated (semi)volatile organic compounds." Environmental Science: Processes & Impacts 22, no. 3 (2020): 465–71. http://dx.doi.org/10.1039/d0em90008g.

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Guest editors Elizabeth Edwards, Lucy Carpenter, Sarah Blossom and Paul Tratnyek introduce the Halogenated (semi)volatile organic compounds themed issue of Environmental Science: Processes & Impacts.

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5

Kos, Gregor, Visahini Kanthasami, Nafissa Adechina, and Parisa A. Ariya. "Volatile organic compounds in Arctic snow: concentrations and implications for atmospheric processes." Environ. Sci.: Processes Impacts 16, no. 11 (2014): 2592–603. http://dx.doi.org/10.1039/c4em00410h.

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6

Qu, Haoli, Jie Cao, Pengjun Wang, Ruirong Li, Zicheng Qi, Jingjing Fu, Yongsheng Chen, and Mingjiang Chen. "Volatile organic compounds and dominant bacterial community during aerobic composting of vegetable waste and cow manure co-complexing." BioResources 17, no. 1 (January 7, 2022): 1338–53. http://dx.doi.org/10.15376/biores.17.1.1338-1353.

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Vegetable waste was aerobically composed using a trough-type system, and the resulting emitted volatile organic compounds were investigated. In addition, the succession pattern of microorganisms was analyzed. Aerobic fermentation was conducted using a tomato stalk-cow dung mix (a water content of 65% and a carbon-to-nitrogen ratio of 25:1). The emitted volatile organic compounds comprised of 58 kinds of compounds, including 2 sulfur-containing compounds, 3 alcohols, 3 esters, 3 aldehydes, 3 ketones, 6 halogenated hydrocarbons, 18 aromatic hydrocarbons, 17 alkanes, and 3 alkenes. The primary volatile organic compounds produced were methyl sulfide, ethyl acetate, ethanol, and acetaldehyde. Clustering and principal coordinate analysis suggested that the community succession changed throughout the composting process in the odor-producing habitat. High-throughput sequencing revealed that the bacterial community was comprised of Firmicutes, Chloroflexi, Proteobacteria, and Actinobacteria, whereas the dominant flora included Ascomycota, Basidiomycota, and Mucoromycota. These findings could aid in the mitigation of volatile organic compounds and odors during vegetable waste composting as well as contribute to the development of deodorizing bacteria.

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7

Auer, Nicole R., and Detlef E. Schulz-Bull. "Stable Carbon Isotope Analysis of Anthropogenic Volatile Halogenated C1 and C2 Organic Compounds." Environmental Chemistry 3, no. 4 (2006): 268. http://dx.doi.org/10.1071/en06027.

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Environmental Context.Volatile halogenated organic compounds (VHOCs), ubiquitous trace gases of natural or man-made origin, have gained increasing attention due to their adverse health effects on humans and wildlife, and their potential for catalytic ozone destruction. However, it is difficult to confront VHOC emission budgets as the processes responsible for the formation and degradation of these compounds are complex, and their emission and persistence are affected by variations in the environment and climate. In order to understand VHOCs and reduce their environmental impact, it is necessary to study the isotopic composition of VHOCs produced by different sources, in addition to their concentrations and fluxes in the environment. In this paper, the determination of the carbon isotope range of VHOCs produced by human activities adds useful basic information for future studies of their environmental fate. Abstract. This paper presents the C13/C12 determination of 27 industrial volatile halogenated organic compounds (VHOCs) from different suppliers via gas chromatography combustion isotope-ratio mass spectrometry (GC-C-IRMS). A total of 60 samples, containing one or two carbon atoms, plus chlorine, bromine and iodine substituents, were analyzed to provide a basis for their further comparison with naturally produced VHOC δ13C values. The results indicate a wide range in the carbon isotope signature (–62‰ and –5‰). For chloroiodomethane alone, positive carbon isotope values of 33‰ (Fluka) and 59‰ (VWR International) were found. Each C1 and C2 compound has a distinctive carbon isotope composition, depending on the individual manufacturing reactions, the use of different carbon sources, differences in the composition of the same type of raw material and/or conditions during the manufacturing process. The last two factors are probably responsible for the δ13C discrepancies of ~5‰ found between manufacturers of the same compound. Larger deviations are mainly associated with different carbon isotope signatures of the reactant. Therefore, it is suggested that the reporting of a stable carbon isotope ratio for an anthropogenic VHOC include details of the manufacturing process or alternatively the supplier.

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8

Shechner, Moshe, Alex Guenther, Robert Rhew, Asher Wishkerman, Qian Li, Donald Blake, Gil Lerner, and Eran Tas. "Emission of volatile halogenated organic compounds over various Dead Sea landscapes." Atmospheric Chemistry and Physics 19, no. 11 (June 7, 2019): 7667–90. http://dx.doi.org/10.5194/acp-19-7667-2019.

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Abstract. Volatile halogenated organic compounds (VHOCs), such as methyl halides (CH3X; X is Br, Cl and I) and very short-lived halogenated substances (VSLSs; bromoform – CHBr3, dibromomethane – CH2Br2, bromodichloromethane – CHBrCl2, trichloroethylene – C2HCl3, chloroform – CHCl3 – and dibromochloromethane – CHBr2Cl) are well known for their significant influence on ozone concentrations and oxidation capacity of the troposphere and stratosphere and for their key role in aerosol formation. Insufficient characterization of the sources and the emission rate of VHOCs limits our ability to understand and assess their impact in both the troposphere and stratosphere. Over the last two decades, several natural terrestrial sources for VHOCs, including soil and vegetation, have been identified, but our knowledge of emission rates from these sources and their responses to changes in ambient conditions remains limited. Here we report measurements of the mixing ratios and fluxes of several chlorinated and brominated VHOCs from different landscapes and natural and agricultural vegetated sites at the Dead Sea during different seasons. Fluxes were generally positive (emission into the atmosphere), corresponding to elevated mixing ratios, but were highly variable. Fluxes (and mixing ratios) for the investigated VHOCs ranged as follows: CHBr3 from −79 to 187 nmol m−2 d−1 (1.9 to 22.6 pptv), CH2Br2 from −55 to 71 nmol m−2 d−1 (0.7 to 19 pptv), CHBr2Cl from −408 to 768 nmol m−2 d−1 (0.4 to 11 pptv), CHBrCl2 from −29 to 45 nmol m−2 d−1 (0.5 to 9.6 pptv), CHCl3 from −577 to 883 nmol m−2 d−1 (15 to 57 pptv), C2HCl3 from −74 to 884 nmol m−2 d−1 (0.4 to 11 pptv), methyl chloride (CH3Cl) from -5300 to 10,800 nmol m−2 d−1 (530 to 730 pptv), methyl bromide (CH3Br) from −111 to 118 nmol m−2 d−1 (7.5 to 14 pptv) and methyl iodide (CH3I) from −25 to 17 nmol m−2 d−1 (0.4 to 2.8 pptv). Taking into account statistical uncertainties, the coastal sites (particularly those where soil is mixed with salt deposits) were identified as sources of all VHOCs, but this was not statistically significant for CHCl3. Further away from the coastal area, the bare soil sites were sources for CHBrCl2, CHBr2Cl, CHCl3, and probably also for CH2Br2 and CH3I, and the agricultural sites were sources for CHBr3, CHBr2Cl and CHBrCl2. In contrast to previous reports, we also observed emissions of brominated trihalomethanes, with net molar fluxes ordered as follows: CHBr2Cl > CHCl3 > CHBr3 > CHBrCl2 and lowest positive flux incidence for CHCl3 among all trihalomethanes; this finding can be explained by the soil's enrichment with Br. Correlation analysis, in agreement with recent studies, indicated common controls for the emission of CHBr2Cl and CHBrCl2 and likely also for CHBr3. There were no indications for correlation of the brominated trihalomethanes with CHCl3. Also in line with previous reports, we observed elevated emissions of CHCl3 and C2HCl3 from mixtures of soil and different salt-deposited structures; the flux correlations between these compounds and methyl halides (particularly CH3I) suggested that at least CH3I is also emitted via similar mechanisms or is subjected to similar controls. Overall, our results indicate elevated emission of VHOCs from bare soil under semiarid conditions. Along with other recent studies, our findings point to the strong emission potential of a suite of VHOCs from saline soils and salt lakes and call for additional studies of emission rates and mechanisms of VHOCs from saline soils and salt lakes.

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9

GSCHWEND, P. M., J. K. MACFARLANE, and K. A. NEWMAN. "Volatile Halogenated Organic Compounds Released to Seawater from Temperate Marine Macroalgae." Science 227, no. 4690 (March 1, 1985): 1033–35. http://dx.doi.org/10.1126/science.227.4690.1033.

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10

Reddy, Christopher M., Li Xu, Timothy I. Eglinton, Jan P. Boon, and D. John Faulkner. "Radiocarbon content of synthetic and natural semi-volatile halogenated organic compounds." Environmental Pollution 120, no. 2 (December 2002): 163–68. http://dx.doi.org/10.1016/s0269-7491(02)00162-8.

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11

Zhang, Shuo, and Ruhua Wang. "Study on the change of organic matter along the Processes of Drinking Water Plant." E3S Web of Conferences 118 (2019): 03023. http://dx.doi.org/10.1051/e3sconf/201911803023.

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According to contaminated raw water and drinking water purification processes, volatile/semi-volatile organic compounds in water are determined by GC-MS. The changes of the organic along the process and water quality from unsafe to safe process were revealed. The results show that there are odorous substances such as heptanal in raw water, which are not detected after the filtration. The composition of volatile organic compounds changes a lot after the ozone activated carbon process, thus anthropogenic pollutants are no longer detected such as 5-ethyl-5-(3-hydroxy isopentyl)-barbituric acid. However, biological metabolites that are not present in raw water such as cedrenol appear. Except disinfection by-products after disinfection, there are a variety of halogenated compounds as 1-1-dichlorocyclobutane and 1-chloro-3, 3-dimethyl-butane. Some hydrocarbons and alcohols in the finished water have little impact on drinking water safety.

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12

Deeds, Daniel A., Justin T. Kulongoski, and Kenneth Belitz. "Assessing California Groundwater Susceptibility Using Trace Concentrations of Halogenated Volatile Organic Compounds." Environmental Science & Technology 46, no. 24 (November 29, 2012): 13128–35. http://dx.doi.org/10.1021/es303546b.

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13

PAPAEFTHIMIOU, P., T. IOANNIDES, and X. VERYKIOS. "Combustion of non-halogenated volatile organic compounds over group VIII metal catalysts." Applied Catalysis B: Environmental 13, no. 3-4 (November 14, 1997): 175–84. http://dx.doi.org/10.1016/s0926-3373(96)00103-8.

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14

Li, Rosamaria W. C., Leonardo Ventura, Jonas Gruber, Yoshio Kawano, and Lilian R. F. Carvalho. "A selective conductive polymer-based sensor for volatile halogenated organic compounds (VHOC)." Sensors and Actuators B: Chemical 131, no. 2 (May 2008): 646–51. http://dx.doi.org/10.1016/j.snb.2007.12.051.

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15

Latumus, Frank. "Release of volatile halogenated organic compounds by unialgal cultures of polar macroalgae." Chemosphere 31, no. 6 (September 1995): 3387–95. http://dx.doi.org/10.1016/0045-6535(95)00190-j.

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16

Ondo, Daniel, Eva Baránková, and Vladimír Dohnal. "Gas–liquid partitioning of halogenated volatile organic compounds in aqueous cyclodextrin solutions." Journal of Chemical Thermodynamics 43, no. 8 (August 2011): 1270–77. http://dx.doi.org/10.1016/j.jct.2011.03.017.

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17

Holzinger, R., A. Kasper-Giebl, M. Staudinger, G. Schauer, and T. Röckmann. "Analysis of the chemical composition of organic aerosol at the Mt. Sonnblick observatory using a novel high mass resolution thermal-desorption proton-transfer-reaction mass-spectrometer (hr-TD-PTR-MS)." Atmospheric Chemistry and Physics Discussions 10, no. 6 (June 7, 2010): 13969–4011. http://dx.doi.org/10.5194/acpd-10-13969-2010.

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Abstract. For the first time a high mass resolution thermal desorption proton transfer reaction mass spectrometer (hr-TD-PTR-MS) was deployed in the field to analyze the composition of the organic fraction of aerosols. We report on measurements from the remote Mt. Sonnblick observatory in the Austrian alps (3108 m a.s.l.) during a 7 week period in summer 2009. A total of 638 mass peaks in the range 18–392 Da were detected and quantified in aerosols. An empirical formula was tentatively attributed to 464 of these compounds by custom-made data analysis routines which consider compounds containing C, H, O, N, and S atoms. Most of the other (unidentified) compounds must contain other elements – most likely halogenated compounds. The mean total concentration of all detected compounds was 1.1 μg m−3. Oxygenated hydrocarbons constitute the bulk of the aerosol mass (75%) followed by organic nitrogen compounds (9%), inorganic compounds (mostly NH3, 8%), unidentified/halogenated (3.8%), hydrocarbons (2.7%), and organic sulfur compounds (0.8%). The measured O/C ratios are lower than expected and suggest a significant effect from charring. A significant part of the organic nitrogen compounds is non volatile. Organic carbon concentrations measured with TD-PTR-MS were about 25% lower than measurements on high volume filter samples.

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18

Im, Jong Kwon, Soon Ju Yu, Sujin Kim, Sang Hun Kim, Hye Ran Noh, and Moon Kyung Kim. "Occurrence, Potential Sources, and Risk Assessment of Volatile Organic Compounds in the Han River Basin, South Korea." International Journal of Environmental Research and Public Health 18, no. 7 (April 2, 2021): 3727. http://dx.doi.org/10.3390/ijerph18073727.

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Increasing public awareness about the aesthetics and safety of water sources has shifted researchers’ attention to the adverse effects of volatile organic compounds (VOCs) on humans and aquatic organisms. A total of 17 VOCs, including 10 volatile halogenated hydrocarbons and seven volatile non-halogenated hydrocarbons, were investigated at 36 sites of the Han River Basin, which is the largest and most important drinking water source for residents of the Seoul metropolitan area and Gyeonggi province in South Korea. The VOC concentrations ranged from below detection limits to 1.813 µg L−1. The most frequently detected VOC was 1,2-dichloropropane, with a detection frequency of 80.56%, as it is used as a soil fumigant, chemical intermediate, and industrial solvent. In terms of geographical trends, the sampling sites that were under the influence of sewage and industrial wastewater treatment plants were more polluted with VOCs than other areas. This observation was also supported by the results of the principal component analysis. In the present study, the detected concentrations of VOCs were much lower than that of the predicted no-effect concentrations, suggesting low ecological risk in the Han River. However, a lack of available ecotoxicity data and limited comparable studies warrants further studies on these compounds.

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19

Huang, Li Kun, Guang Zhi Wang, and Jin Long Zuo. "Species of Volatile Organic Compounds from Municipal Wastewater Treatment Plant." Advanced Materials Research 183-185 (January 2011): 1057–60. http://dx.doi.org/10.4028/www.scientific.net/amr.183-185.1057.

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In order to investigate the characteristic of volatile organic compounds (VOCs) from wastewater treatment plant (WWTP), the air and water samples were collected. The air samples were extracted and identified by GC/MS. The atmospheric VOCs species from all WWTP units were tested. It was shown that the main fugitive sources were primary clarifier and the room of sludge dewatering. The numbers were 33 and 30. The total species of VOCs emitted varied with a range of 16 to 33. The relationship between VOCs species and the change of water quality were discussed. The increasing of VOCs species was related with the higher SUVA, and the molecular weight of VOCs species in air sample gradually become lower along the wastewater treatment process. In the wastewater treatment process，the function of microbe did not contribute the whole effort on the removing of organic pollutants. VOCs volatilized from water phase could also reduce organic pollutants in water phase. In the whole WWTP, the main VOCs species were alkyl with small molecular weight, aromatic hydrocarbon material and naphthalene. Halogenated hydrocarbon was detected in primary treatment unit and anoxic tank.

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20

Montiel, A., and S. Rauzy. "Halogenated organic compounds (volatile and non volatile) as parameters for the evaluation of drinking water quality)†." Toxicological & Environmental Chemistry 10, no. 4 (October 1985): 315–20. http://dx.doi.org/10.1080/02772248509360969.

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21

Vozhdaeva, Margarita Yu, Alfiya R. Kholova, Igor A. Melnitskiy, Ilya I. Beloliptsev, Yulia S. Vozhdaeva, Evgeniy A. Kantor, and Albert T. Lebedev. "Monitoring and Statistical Analysis of Formation of Organochlorine and Organobromine Compounds in Drinking Water of Different Water Intakes." Molecules 26, no. 7 (March 25, 2021): 1852. http://dx.doi.org/10.3390/molecules26071852.

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The main drawback of drinking water chlorination involves the formation of quite hazardous disinfection by-products (DBPs), represented mainly by halogenated species. Based on the authors’ monitoring data since 2002, the prevalence of chlorine over bromine in the composition of volatile DBPs was shown for the drinking water in Ufa (Russia). However, the situation was completely reversed in the case of semi-volatile DBPs. The principal goal of the present study involved rationalization of the results of the long-term monitoring. Gas chromatography–mass spectrometry (GC-MS) was used for the qualitative and quantitative analysis of volatile DBPs. Identification of semi-volatile compounds was carried out with GC-MS, while gas chromatography with an atomic emission detector (GC-AED) was used for their quantification. A significant contribution of oxygen to the composition of semi-volatile compounds proves the decisive role of the dissolved organic matter oxidative destructive processes. Statistical analysis revealed notable linear correlations for trihalomethane and haloacetic acid formation vs. chlorine dose. On the contrary, halogenated semi-volatile products do not demonstrate any correlations with the water quality parameters or chlorine dose. Principal component analysis (PCA) placed them into separate groups. The results allow for proposing that formation of the organohalogenated species involved the fast penetration of bromine into the humic matter molecules and, further, their oxidative destruction by active chlorine.

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22

Wevill, David J., and Lucy J. Carpenter. "Automated measurement and calibration of reactive volatile halogenated organic compounds in the atmosphere." Analyst 129, no. 7 (2004): 634. http://dx.doi.org/10.1039/b403550j.

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23

Pleil, Joachim D., and Andrew B. Lindstrom. "Exhaled human breath measurement method for assessing exposure to halogenated volatile organic compounds." Clinical Chemistry 43, no. 5 (May 1, 1997): 723–30. http://dx.doi.org/10.1093/clinchem/43.5.723.

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Abstract The organic constituents of exhaled human breath are representative of blood-borne concentrations through gas exchange in the blood/breath interface in the lungs. The presence of specific compounds can be an indicator of recent exposure or represent a biological response of the subject. For volatile organic compounds (VOCs), sampling and analysis of breath is preferred to direct measurement from blood samples because breath collection is noninvasive, potentially infectious waste is avoided, and the measurement of gas-phase analytes is much simpler in a gas matrix rather than in a complex biological tissue such as blood. To exploit these advantages, we have developed the “single breath canister” (SBC) technique, a simple direct collection method for individual alveolar breath samples, and adapted conventional gas chromatography–mass spectrometry analytical methods for trace-concentration VOC analysis. The focus of this paper is to describe briefly the techniques for making VOC measurements in breath, to present some specific applications for which these methods are relevant, and to demonstrate how to estimate exposure to example VOCs on the basis of breath elimination. We present data from three different exposure scenarios: (a) vinyl chloride and cis-1,2-dichloroethene from showering with contaminated water from a private well, (b) chloroform and bromodichloromethane from high-intensity swimming in chlorinated pool water, and (c) trichloroethene from a controlled exposure chamber experiment. In all cases, for all subjects, the experiment is the same: preexposure breath measurement, exposure to halogenated VOC, and a postexposure time-dependent series of breath measurements. Data are presented only to demonstrate the use of the method and how to interpret the analytical results.

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24

Hayward, G. L., and Y. Si. "Surrogate Analysis of Trace Levels of Volatile Halogenated Organic Compounds in Drinking Water." Analytical Letters 27, no. 5 (March 1, 1994): 969–82. http://dx.doi.org/10.1080/00032719408007365.

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25

Meyer, John K., and Timothy D. Johnson. "Reductive Dechlorinization of Halogenated Volatile Organic Compounds by Enhanced In Situ Microbial Degradation." Soil and Sediment Contamination: An International Journal 11, no. 3 (May 2002): 437. http://dx.doi.org/10.1080/20025891107618.

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26

Odabasi, Mustafa. "Halogenated Volatile Organic Compounds from the Use of Chlorine-Bleach-Containing Household Products." Environmental Science & Technology 42, no. 5 (March 2008): 1445–51. http://dx.doi.org/10.1021/es702355u.

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27

Krause, T., C. Tubbesing, K. Benzing, and H. F. Schöler. "Model reactions and natural occurrence of furans from hypersaline environments." Biogeosciences Discussions 10, no. 11 (November 5, 2013): 17439–68. http://dx.doi.org/10.5194/bgd-10-17439-2013.

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Abstract. Volatile organic compounds like furan and its derivatives are important for atmospheric properties and reactions. In this paper the known abiotic formation of furan from catechol under Fenton-like conditions with Fe3+ sulphate was revised by the use of a bispidine Fe2+ complex as a~model compound for iron with well-known characteristics. While total yields were comparable to those with the Fe3+ salt, the turnover numbers of the active iron species increased. Additionally, the role of iron and pH will be discussed during furan formation from model compounds and in natural sediment and water samples collected from the Dead Sea and several salt lakes in Western Australia. Various alkylated furans and even traces of halogenated furans (3-chlorofuran and 3-bromofuran) were found in these samples. Furthermore, the emission of furans is compared to the abundance of several possible precursors such as isoprene and aromatic hydrocarbons as well as to the related thiophenes. It is assumed that the emissions of volatile organic compounds such as furans contribute to the formation of ultra fine particles in the vicinity of salt lakes and are therefore important for the local climate.

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28

Balaban, Noa, Irina Yankelzon, Eilon Adar, Faina Gelman, Zeev Ronen, and Anat Bernstein. "The Spatial Distribution of the Microbial Community in a Contaminated Aquitard below an Industrial Zone." Water 11, no. 10 (October 14, 2019): 2128. http://dx.doi.org/10.3390/w11102128.

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The industrial complex Neot Hovav, in Israel, is situated above an anaerobic fractured chalk aquitard, which is polluted by a wide variety of hazardous organic compounds. These include volatile and non-volatile, halogenated, organic compounds. In this study, we characterized the indigenous bacterial population in 17 boreholes of the groundwater environment, while observing the spatial variations in the population and structure as a function of distance from the polluting source. In addition, the de-halogenating potential of the microbial groundwater population was tested through a series of lab microcosm experiments, thus exemplifying the potential and limitations for bioremediation of the site. In all samples, the dominant phylum was Proteobacteria. In the production plant area, the non-obligatory organo-halide respiring bacteria (OHRB) Firmicutes Phylum was also detected in the polluted water, in abundancies of up to 16 %. Non-metric multidimensional scaling (NMDS) analysis of the microbial community structure in the groundwater exhibited clusters of distinct populations following the location in the industrial complex and distance from the polluting source. Dehalogenation of halogenated ethylene was demonstrated in contrast to the persistence of brominated alcohols. Persistence is likely due to the chemical characteristics of brominated alcohols, and not because of the absence of active de-halogenating bacteria.

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29

Han, Haiyan, Shihu Du, Yongliang Yan, Xiuhong Liu, Qiaofen Zhu, Ruili Shi, Sixing Xi, Feng Liu, Zhi Zhao, and Yannan Chu. "Distinguishing between halogenated alkanes containing the same halogen based on the reaction kinetic parameter using negative ion mobility spectrometry at atmospheric pressure." RSC Advances 10, no. 49 (2020): 29441–49. http://dx.doi.org/10.1039/d0ra01284j.

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30

Latumus, Frank, Gabriele Mehrtens, and Christian Grøn. "Haloperoxidase-like activity in spruce forest soil — a source of volatile halogenated organic compounds?" Chemosphere 31, no. 7 (October 1995): 3709–19. http://dx.doi.org/10.1016/0045-6535(95)00220-3.

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31

Plummer, L. Niel, Eurybiades Busenberg, Sandra M. Eberts, Laura M. Bexfield, Craig J. Brown, Lynne S. Fahlquist, Brian G. Katz, and Matthew K. Landon. "Low-Level Detections of Halogenated Volatile Organic Compounds in Groundwater: Use in Vulnerability Assessments." Journal of Hydrologic Engineering 13, no. 11 (November 2008): 1049–68. http://dx.doi.org/10.1061/(asce)1084-0699(2008)13:11(1049).

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32

Guerra, Fernanda, Mohamed Attia, Daniel Whitehead, and Frank Alexis. "Nanotechnology for Environmental Remediation: Materials and Applications." Molecules 23, no. 7 (July 18, 2018): 1760. http://dx.doi.org/10.3390/molecules23071760.

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Environmental remediation relies mainly on using various technologies (e.g., adsorption, absorption, chemical reactions, photocatalysis, and filtration) for the removal of contaminants from different environmental media (e.g., soil, water, and air). The enhanced properties and effectiveness of nanotechnology-based materials makes them particularly suitable for such processes given that they have a high surface area-to-volume ratio, which often results in higher reactivity. This review provides an overview of three main categories of nanomaterials (inorganic, carbon-based, and polymeric-based materials) used for environmental remediation. The use of these nanomaterials for the remediation of different environmental contaminants—such as heavy metals, dyes, chlorinated organic compounds, organophosphorus compounds, volatile organic compounds, and halogenated herbicides—is reviewed. Various recent examples are extensively highlighted focusing on the materials and their applications.

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33

Liu, Yanqin. "Determination of 9 kinds of volatile halogenated alkane and chlorobenzene compounds in water by gas chromatography-mass spectrometry with purge and trap method." Journal of Physics: Conference Series 2079, no. 1 (November 1, 2021): 012018. http://dx.doi.org/10.1088/1742-6596/2079/1/012018.

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Abstract In this study, in the face of water environmental pollution, a more simple and efficient detection method was obtained for simultaneous determination of 9 kinds of volatile halogenated alkane and chlorobenzene compounds in water by PT/GCMS. By optimizing the purge and trap conditions, the optimal experimental conditions were obtained as follows: purge time was 15 min, purge temperature was 35 °C, purge velocity was 40 mL/min, desorption time was 2 min, desorption temperature was 240 °C. The linearity of the method was good, and the correlation coefficients were all greater than 0.999. The minimum detection limit(MDL) of the method was 0.1 μg/L. The average recovery rate ranged from 85.4 %~102.1 % in surface water and drinking water with relative standard deviation (RSD) ranged from 5.3 %-9.2 % in the spiked concentration levels of 5 μg/L and 10 μg/L. This method has the advantages of simple operation, good separation effect, rapid detection, high recovery and good precision, and can simultaneously meet the requirements of 9 kinds of volatile organic compounds detection in drinking water and surface water. This work provides a new method for the detection of volatile organic compounds in water and will have great significance for the detection of water quality.

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Krause, T., C. Tubbesing, K. Benzing, and H. F. Schöler. "Model reactions and natural occurrence of furans from hypersaline environments." Biogeosciences 11, no. 10 (May 28, 2014): 2871–82. http://dx.doi.org/10.5194/bg-11-2871-2014.

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Abstract. Volatile organic compounds like furan and its derivatives are important for atmospheric properties and reactions. In this work the known abiotic formation of furan from catechol under Fenton-like conditions with Fe3+ sulfate was revised by the use of a bispidine Fe2+ complex as a model compound for iron with well-known characteristics. While total yields were comparable to those with the Fe3+ salt, the bispidine Fe2+ complex is a better catalyst as the turnover numbers of the active iron species were higher. Additionally, the role of iron and pH is discussed in relation to furan formation from model compounds and in natural sediment and water samples collected from the Dead Sea and several salt lakes in Western Australia. Various alkylated furans and even traces of halogenated furans (3-chlorofuran and 3-bromofuran) were found in some Australian samples. 3-chlorofuran was found in three sediments and four water samples, whereas 3-bromofuran was detected in three water samples. Further, the emission of furans is compared to the abundance of several possible precursors such as isoprene and aromatic hydrocarbons as well as to the related thiophenes. It is deduced that the emissions of volatile organic compounds such as furans contribute to the formation of ultra-fine particles in the vicinity of salt lakes and are important for the local climate.

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Odabasi, Mustafa, Tolga Elbir, Yetkin Dumanoglu, and Sait C. Sofuoglu. "Halogenated volatile organic compounds in chlorine-bleach-containing household products and implications for their use." Atmospheric Environment 92 (August 2014): 376–83. http://dx.doi.org/10.1016/j.atmosenv.2014.04.049.

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Asher, Elizabeth, Rebecca S. Hornbrook, Britton B. Stephens, Doug Kinnison, Eric J. Morgan, Ralph F. Keeling, Elliot L. Atlas, et al. "Novel approaches to improve estimates of short-lived halocarbon emissions during summer from the Southern Ocean using airborne observations." Atmospheric Chemistry and Physics 19, no. 22 (November 22, 2019): 14071–90. http://dx.doi.org/10.5194/acp-19-14071-2019.

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Abstract. Fluxes of halogenated volatile organic compounds (VOCs) over the Southern Ocean remain poorly understood, and few atmospheric measurements exist to constrain modeled emissions of these compounds. We present observations of CHBr3, CH2Br2, CH3I, CHClBr2, CHBrCl2, and CH3Br during the O2∕N2 Ratio and CO2 Airborne Southern Ocean (ORCAS) study and the second Atmospheric Tomography mission (ATom-2) in January and February of 2016 and 2017. Good model–measurement correlations were obtained between these observations and simulations from the Community Earth System Model (CESM) atmospheric component with chemistry (CAM-Chem) for CHBr3, CH2Br2, CH3I, and CHClBr2 but all showed significant differences in model : measurement ratios. The model : measurement comparison for CH3Br was satisfactory and for CHBrCl2 the low levels present precluded us from making a complete assessment. Thereafter, we demonstrate two novel approaches to estimate halogenated VOC fluxes; the first approach takes advantage of the robust relationships that were found between airborne observations of O2 and CHBr3, CH2Br2, and CHClBr2. We use these linear regressions with O2 and modeled O2 distributions to infer a biological flux of halogenated VOCs. The second approach uses the Stochastic Time-Inverted Lagrangian Transport (STILT) particle dispersion model to explore the relationships between observed mixing ratios and the product of the upstream surface influence of sea ice, chl a, absorption due to detritus, and downward shortwave radiation at the surface, which in turn relate to various regional hypothesized sources of halogenated VOCs such as marine phytoplankton, phytoplankton in sea-ice brines, and decomposing organic matter in surface seawater. These relationships can help evaluate the likelihood of particular halogenated VOC sources and in the case of statistically significant correlations, such as was found for CH3I, may be used to derive an estimated flux field. Our results are consistent with a biogenic regional source of CHBr3 and both nonbiological and biological sources of CH3I over these regions.

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Montesinos, Isabel, and Mercedes Gallego. "How the Inclusion of Treated Water in Beverages Influences the Appearance of Halogenated Volatile Organic Compounds." Journal of Agricultural and Food Chemistry 62, no. 42 (October 7, 2014): 10240–47. http://dx.doi.org/10.1021/jf503431q.

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Doskey, Paul V., Molly S. Costanza, Mary C. Hansen, and Wayne T. Kickels. "Solid sorbent method for the collection and analysis of volatile halogenated organic compounds in soil gas." Journal of Chromatography A 738, no. 1 (June 1996): 73–81. http://dx.doi.org/10.1016/0021-9673(96)00079-9.

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39

Kowalska, Joanna, and Tomasz Gierczak. "Qualitative and Quantitative Analyses of the Halogenated Volatile Organic Compounds Emitted from the Office Equipment Items." Indoor and Built Environment 22, no. 6 (September 12, 2012): 920–31. http://dx.doi.org/10.1177/1420326x12458299.

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Jakubowska, Natalia, Bogdan Zygmunt, Żaneta Polkowska, Bożena Zabiegała, and Jacek Namieśnik. "Sample preparation for gas chromatographic determination of halogenated volatile organic compounds in environmental and biological samples." Journal of Chromatography A 1216, no. 3 (January 2009): 422–41. http://dx.doi.org/10.1016/j.chroma.2008.08.092.

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41

Granfors, Anna, Anders Karlsson, Erik Mattsson, Walker O. Smith, and Katarina Abrahamsson. "Contribution of sea ice in the Southern Ocean to the cycling of volatile halogenated organic compounds." Geophysical Research Letters 40, no. 15 (August 15, 2013): 3950–55. http://dx.doi.org/10.1002/grl.50777.

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42

Haapanala, S., J. Rinne, K. H. Pystynen, H. Hellén, H. Hakola, and T. Riutta. "Measurements of hydrocarbon emissions from a boreal fen using the REA technique." Biogeosciences 3, no. 1 (March 14, 2006): 103–12. http://dx.doi.org/10.5194/bg-3-103-2006.

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Abstract. Fluxes of biogenic volatile organic compounds (VOC) and methane were measured above a boreal fen. Vegetation on the fen is dominated by Sphagnum mosses and sedges. A relaxed eddy accumulation (REA) system with dynamic deadband was designed and constructed for the measurements. Methane, C2-C6 hydrocarbons and some halogenated hydrocarbons were analysed from the samples by gas chromatographs equipped with FID and ECD. A significant flux of isoprene and methane was detected during the growing seasons. Isoprene emission was found to follow the common isoprene emission algorithm. Average standard emission potential of isoprene was 680 µg m-2 h-1. Fluxes of other non-methane hydrocarbons were below detection limit.

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43

Haapanala, S., J. Rinne, K. H. Pystynen, H. Hellén, and H. Hakola. "Measurements of hydrocarbon emissions from a boreal fen using the REA technique." Biogeosciences Discussions 2, no. 5 (October 14, 2005): 1645–64. http://dx.doi.org/10.5194/bgd-2-1645-2005.

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Abstract. Fluxes of biogenic volatile organic compounds (VOC) and methane were measured above a boreal fen. Vegetation on the fen is dominated by Sphagnum mosses and sedges. A relaxed eddy accumulation (REA) system with dynamic deadband was designed and constructed for the measurements. Methane, C2-C6 hydrocarbons and some halogenated hydrocarbons were analysed from the samples by gas chromatographs equipped with FID and ECD. A significant flux of isoprene and methane was detected during the growing seasons. Isoprene emission was found to follow the common isoprene emission algorithm. Average standard emission potential of isoprene was 680 μ g m-2h-1. Fluxes of other non-methane hydrocarbons were below detection limit.

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44

Aguiar, Joselin, João L. Gonçalves, Vera L. Alves, and José S. Câmara. "Relationship between Volatile Composition and Bioactive Potential of Vegetables and Fruits of Regular Consumption—An Integrative Approach." Molecules 26, no. 12 (June 15, 2021): 3653. http://dx.doi.org/10.3390/molecules26123653.

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In recent years, there has been a growing interest in studying and exploring the potential health benefits of foods, mainly from vegetables and fruits from regular intake. The presence of secondary metabolites, namely polyphenols, carotenoids and terpenes, in certain food matrices seems to contribute to their functional properties, expressed through an increased prevention in the development of certain chronic diseases, namely coronary heart diseases, neurodegenerative diseases, cancer and diabetes. However, some foods’ volatile secondary metabolites also present important bioactive properties, although this is a poorly scientifically explored field. In this context, and in order to explore the potential bioactivity of volatile metabolites in different vegetables and fruits from regular consumption, the volatile composition was established using a green extraction technique, solid phase microextraction in headspace mode (HS-SPME), combined with gas chromatography tandem mass spectrometry (GC-MS). A total of 320 volatile metabolites, comprising 51 terpenic compounds, 45 organosulfur compounds, 31 aldehydes, 37 esters, 29 ketones, 28 alcohols, 23 furanic compounds, 22 hydrocarbons, 19 benzene compounds, 13 nitrogenous compounds, 9 carboxylic acids, 7 ethers, 4 halogenated compounds and 3 naphthalene derivatives, were positively identified. Each investigated fruit and vegetable showed a specific volatile metabolomic profile. The obtained results revealed that terpenic compounds, to which are associated antimicrobial, antioxidant, and anticancer activities, are the most predominant chemical family in beetroot (61%), orange carrot (58%) and white carrot (61%), while organosulfur compounds (antiviral activity) are dominant in onion, garlic and watercress. Broccoli and spinach are essentially constituted by alcohols and aldehydes (enzyme-inhibition and antimicrobial properties), while fruits from the Solanaceae family are characterized by esters in tamarillo and aldehydes in tomato.

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SUZUKI, Shigeru. "Simultaneous Determination of Halogenated Volatile Organic Compounds in Air by Thermal Desorption and Cold Trap GC/MS." Analytical Sciences 11, no. 6 (1995): 953–60. http://dx.doi.org/10.2116/analsci.11.953.

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46

Fabbri, Daniele, Roberto Bezzi, Cristian Torri, Paola Galletti, and Emilio Tagliavini. "Determination of Tetrachloroethylene and Other Volatile Halogenated Organic Compounds in Oil Wastes by Headspace SPME GC–MS." Chromatographia 66, no. 5-6 (July 31, 2007): 377–82. http://dx.doi.org/10.1365/s10337-007-0353-0.

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47

Im, Jong-Kwon, Yong-Chul Cho, Hye-Ran Noh, and Soon-Ju Yu. "Geographical Distribution and Risk Assessment of Volatile Organic Compounds in Tributaries of the Han River Watershed." Agronomy 11, no. 5 (May 12, 2021): 956. http://dx.doi.org/10.3390/agronomy11050956.

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Volatile organic compounds (VOCs), with negative impacts on the aquatic ecosystem, are increasingly released into the environment by anthropogenic activities. Water samples were collected from five areas of the Han River Watershed (HRW) tributaries, South Korea, to detect 11 VOCs, which were classified as halogenated aliphatic hydrocarbons (HAHs) and aromatic hydrocarbons (AHs). Among the 11 VOCs, 1,1-dichloroethylene, 1,1,1-trichloroethane, and vinyl chloride were undetected. The highest concentration compounds were chloroform (0.0596 ± 0.1312 µg/L), trichloroethylene (0.0253 ± 0.0781 µg/L), and toluene (0.0054 ± 0.0139 µg/L). The mean concentration (0.0234 µg/L) and detection frequency (37.0%) of HAHs were higher than those of AHs (0.0036 µg/L, 21.0%, respectively). The Imjin Hantan River area exhibited the highest mean concentration (0.2432 µg/L) and detection frequency (22.9%), because it is located near industrial complexes, thus, highlighting their role as important VOC sources. However, the detected VOCs had lower concentrations than those permitted by the EU, WHO, USA, and South Korea drinking water guidelines. Ecological risks associated with the VOCs were estimated by risk quotient (RQ); consequently, the predicted no-effect concentration was 0.0029 mg/L, and the toluene and styrene RQ values were >1 and >0.5, respectively. The findings may facilitate policymakers in designing pollution control strategies.

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Espinoza, Javier, Cristian Medina, Alejandra Calabi-Floody, Elsa Sánchez-Alonso, Gonzalo Valdés, and Andrés Quiroz. "Evaluation of Reductions in Fume Emissions (VOCs and SVOCs) from Warm Mix Asphalt Incorporating Natural Zeolite and Reclaimed Asphalt Pavement for Sustainable Pavements." Sustainability 12, no. 22 (November 17, 2020): 9546. http://dx.doi.org/10.3390/su12229546.

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Conventional asphalt mixtures used for road paving require high manufacturing temperatures and therefore high energy expenditure, which has a negative environmental impact and creates risk in the workplace owing to high emissions of pollutants, greenhouse gases, and toxic fumes. Reducing energy consumption and emissions is a continuous challenge for the asphalt industry. Previous studies have focused on the reduction of emissions without characterizing their composition, and detailed characterization of volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs) in asphalt fumes is scarce. This communication describes the characterization and evaluation of VOCs and SVOCs from asphalt mixtures prepared at lower production temperatures using natural zeolite; in some cases, reclaimed asphalt pavement (RAP) was used. Fumes were extracted from different asphalt mix preparations using a gas syringe and then injected into hermetic gas sample bags. The compounds present in the fumes were sampled with a fiber and analyzed by gas-liquid chromatography coupled to mass spectrometry (GC/MS). In general, the preparation of warm mix asphalts (WMA) using RAP and natural zeolite as aggregates showed beneficial effects, reducing VOCs and SVOCs compared to hot mix asphalts (HMA). The fumes captured presented a similar composition to those from HMA, consisting principally of saturated and unsaturated aliphatic hydrocarbons and aromatic compounds but with few halogenated compounds and no polycyclic aromatic hydrocarbons. Thus, the paving mixtures described here are a friendlier alternative for the environment and for the health of road workers, in addition to permitting the re-use of RAP.

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Ponte, José M. S., Ana M. L. Seca, and Maria Carmo Barreto. "Asparagopsis Genus: What We Really Know About Its Biological Activities and Chemical Composition." Molecules 27, no. 6 (March 9, 2022): 1787. http://dx.doi.org/10.3390/molecules27061787.

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Although the genus Asparagopsis includes only two taxonomically accepted species, the published literature is unanimous about the invasive nature of this genus in different regions of the globe, and about the availability of large amounts of biomass for which it is important to find a commercial application. This review shows that extracts from Asparagospsis species have already been evaluated for antioxidant, antibacterial, antifungal, antiviral, antifouling, cytotoxic, antimethanogenic and enzyme-inhibitory activity. However, the tables presented herein show, with few exceptions, that the activity level displayed is generally low when compared with positive controls. Studies involving pure compounds being identified in Asparagopsis species are rare. The chemical compositions of most of the evaluated extracts are unknown. At best, the families of the compounds present are suggested. This review also shows that the volatile halogenated compounds, fatty acids and sterols that are biosynthesized by the Asparagopsis species are relatively well known. Many other non-volatile metabolites (halogen compounds, flavonoids, other phenolic compounds) seem to be produced by these species, but their chemical structures and properties haven’been investigated. This shows how much remains to be investigated regarding the secondary-metabolite composition of these species, suggesting further studies following more targeted methodologies.

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IIJIMA, Masao, Youji HOSHINO, Yoshikazu TOKUMARU, and Norihide NOSE. "Purge and Trap Analysis of Volatile Halogenated Organic Compounds in Foods Using Air Sampling Tube for Solvent Desorption." Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi) 35, no. 2 (1994): 180–86. http://dx.doi.org/10.3358/shokueishi.35.180.

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