Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Distribution Profile of Chiral Organochlorine Pesticides in Ambient Air

대기 환경 중 키랄 유기염소계 농약의 분포 특성

  • Choi, Jong-Woo (Environmental Measurement & Analysis Center, National Institute of Environmental research, Environmental Research Complex) ;
  • Kim, Kum-Hee (Environmental Measurement & Analysis Center, National Institute of Environmental research, Environmental Research Complex) ;
  • Hwang, Seung-Ryul (Chemicals Research division, Environmental Health Research Department, National Institute of Environmental research, Environmental Research Complex) ;
  • Lee, Kyu-Seung (Department of Bio-Environmental Chemistry Chungnam National University)
  • 최종우 (국립환경과학원 환경측정분석센터) ;
  • 김금희 (국립환경과학원 환경측정분석센터) ;
  • 황승률 (국립환경과학원 화학물질연구과) ;
  • 이규승 (충남대학교 생물환경화학과)
  • Received : 2012.09.03
  • Accepted : 2012.09.18
  • Published : 2012.09.30
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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.

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References

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