대기 환경 중 키랄 유기염소계 농약의 분포 특성
Distribution Profile of Chiral Organochlorine Pesticides in Ambient Air
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BACKGROUND: The analysis for the concentration and enantiomeric ratio of OCPs have been performed to confirm the distribution and to emonstrate the pollution characteristics of chiral OCPs in ambient air. METHODS AND RESULTS: In ambient air at coastal and inland sites, concentrations and enantiomer fractions (EFs) of heptachlor (HEPT), eptachlor epoxide (HEPX),trans-chlordane (TC), cis-chlordane (CC), xychlordane (OXY), 2,4'-DDT, 2,4'-DDD with HRGC/HRMS were investigated to understand source and distribution of chiral organochlorine pesticides (OCPs) in ambient air. The mean concentrations of OCPs in ambient air were at the range of 0.027(heptachlor)∼1.279 (4,4‘-DDT) pg/m3 and 0.0005(heptachlor)∼0.1043 ng/g d.w. (TC), respectively. The mean EFs of OCPs in ambient air were at the range of 0.73(HEPX)∼0.45 (CC). Both preferential depletions of (+)and (-) enantiomer were observed for CC, indicated by EFs either <0.5 or >0.5, while preferential depletions of (-)enantiomer which mean EFs <0.5 were observed for chiral OCPs except TC and MC-5. CONCLUSION: OCPs in ambient air have been distributed from soil, but some of them such as chlordane, DDT etc. might have been introduced by long-range atmospheric transport, considering EFs by chiral analysis and trajectory analysis.
Abstract
BACKGROUND: The analysis for the concentration and enantiomeric ratio of OCPs have been performed to confirm the distribution and to emonstrate the pollution characteristics of chiral OCPs in ambient air. METHODS AND RESULTS: In ambient air at coastal and inland sites, concentrations and enantiomer fractions (EFs) of heptachlor (HEPT), eptachlor epoxide (HEPX),trans-chlordane (TC), cis-chlordane (CC), xychlordane (OXY), 2,4'-DDT, 2,4'-DDD with HRGC/HRMS were investigated to understand source and distribution of chiral organochlorine pesticides (OCPs) in ambient air. The mean concentrations of OCPs in ambient air were at the range of 0.027(heptachlor)∼1.279 (4,4‘-DDT) pg/m3 and 0.0005(heptachlor)∼0.1043 ng/g d.w. (TC), respectively. The mean EFs of OCPs in ambient air were at the range of 0.73(HEPX)∼0.45 (CC). Both preferential depletions of (+)and (-) enantiomer were observed for CC, indicated by EFs either <0.5 or >0.5, while preferential depletions of (-)enantiomer which mean EFs <0.5 were observed for chiral OCPs except TC and MC-5. CONCLUSION: OCPs in ambient air have been distributed from soil, but some of them such as chlordane, DDT etc. might have been introduced by long-range atmospheric transport, considering EFs by chiral analysis and trajectory analysis.
참고문헌 (27)
- Aigner, E.J., "Concentrations and Enantiomeric Ratios of Organochlorine Pesticides in Soils from the U.S. Corn Belt", Environ. Sci. Technol, 32, pp.1162~1168 (1998)
- Andi, D.L., "Organochlorine pesticide concentrations and enantiomer fractions for chlordane in indoor air from the US cornbelt", Atmos. Environ, 34, pp.4131~4138 (2000)
- Bidleman, F.T., "Enantiomer ratios for apportioning two sources of chiral compounds", Environ. Sci. Technol, 33(13), pp.2299~2301 (1999)
- Bidleman, F.T., "Chlordane Enantiomers and Temporal Trends of Chlordane Isomers in Arctic Air", Environ. Sci. Technol, 36, pp.539~544 (2002)
- Bidleman, F.T., "Soil-air exchange of organochlorine pesticides in the Southern United States", Environ. Pollut, 128, pp.49~57 (2004)
- Choi, J.W., "Residue Levels of Organochlorine Pesticides on Paddy Field Soils in the Chungnam Area", Korean J. environ. Agric, 6, pp.12~21 (1987)
- Finizio, A., "Emission of chiral pesticides from an agricultural soil in the Fraser Valley, british columbia", Chemosphere, 36, pp.345~355 (1998)
- Haglund, P, "Determination of the gas chromatographic elution sequences of the (+)-and (-)-enantiomers of stable atropisomeric PCBs on Chirasil-Dex", J. High Resolut. Chromatogr, 19, pp.373~376 (1996)
- Harner, T., "Enantiomer fractions Are preferred to enantiomer ratios for describing chiral signatures in environmental Analysis", Environ. Sci. Technol, 34(1), pp.218~220 (2000)
- Harner, T., "Residues of organochlorine pesticides in Alabama soils", Environ. Pollut, 106, pp.323~332 (1999)
- Hites, R.A., "Enantiomeric Ratios of Chlordane-Related Compounds in Air near the Great Lakes Ulrich", Environ. Sci. Technol, 32, pp.1870~1874 (1998)
- Hung, H., "Temporal trends of organochlorine pesticides in the canadian arctic atmosphere", Environ. Sci. Technol, 36(5), pp.862~868 (2002)
- 정예표, "대기중 난분해성 유기염소계 농약의 계절별 농도변화", 한국환경농학회지, 20(2), pp.79~85 (2001), 한국환경농학회
- Kurt-Karakus, P.B., "Chiral Organochlorine Pesticide Signatures in Global Background Soils", Environ. Sci. Technol, 39, pp.8671~8677 (2005)
- Mee-Jung Park, "Distribution of Organochlorines and PCB Congeners In Korean Human Tissues", Archives of Pharmacal Research, 28(7), pp.829~838 (2005), 대한약학회
- Lee, S.R., "Overall Assessment of Organochlorine Insecticide Residues in Korean Food", Korea J. Food Sci. Technol, 14, pp.82~93 (1982)
- Leone, A.D., "Emission of Chiral Organochlorine Pesticides from Agricultural Soils in the Cornbelt Region of the U.S", Environ. Sci. Technol, 35, pp.4592~4596 (2001)
- Li, J., "Concentrations, enantiomeric compositions, and sources of HCH, DDT and chlordane in soils from the Pearl River Delta, South China", Sci. Total Environ, 372, pp.215~224 (2006)
- Qiu, X., "Contribution of Dicofol to the Current DDT Pollution in China", Environ. Sci. Technol, 39, pp.4385~4390 (2005)
- Shen, L., "Atmospheric Distribution and Long-Range Transport Behavior of Organochlorine Pesticides in North America", Environ. Sci. Technol, 39, pp.409~420 (2005)
- Terry F. B., "Chiral signatures of chlordanes indicate changing sources to the atmosphere over the past 30 years", Atmos. Environ, 38, pp.5963~5970 (2004)
- Tiruponitiura, V.P., "Variations in -hexachlorocyclohexane enantiomer ratios in relation to microbial activity in a temperate estuary", Environ. Sci. Technol, 22, pp.1421~1427 (2003)
- Venier, M., "Chiral organochlorine pesticides in the atmosphere", Atmospheric Environment, 41, pp.768~775 (2007)
- Vetter, W., "Enantioselective determination of chiral organochlorine compounds in biota by gas chromatography on modified cyclodextrins", J. Chromatogr. A, 774, pp.143~175 (1997)
- Wiberg, K., "Enantiospecific analysis and environmental behavior of chiral persistent organic pollutants" (2001), Umea university
- Wiberg, K., "Chiral analysis of organochlorine pesticidesin Alabama soils", Chemosphere, 45, pp.843~848 (2001)
- Yeo, H.G., "Seasonal variations in atmospheric concentrations of organochlorine pesticides in urban and rural areas of Korea", Atmos. Environ, 38, pp.4779~4788 (2004)