대기 환경 중 키랄 유기염소계 농약의 분포 특성

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, while preferential depletions of (-) enantiomer which mean EFs