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자료유형
학술저널
저자정보
저널정보
한국환경분석학회 환경분석과 독성보건 한국환경분석학회지 제12권 제2호
발행연도
2009.1
수록면
144 - 149 (6page)

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초록· 키워드

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Application of accelerated solvent extraction (ASE) technique to the extraction of organochlorine pesticides from vegetables turned out to be useful. Recoveries of 12 organochlorine pesticides spiked in sand were within the range of 33-118%. Method detection limits were 0.3-2.3 ug/Kg. Surrogate recoveries of TCMA and dibuthylchlorendate were 48.4 and 84.7%, respectively. However, the analytes which are sensitive as stable to heat were not suitable for ASE extraction. Degradation of the compounds such as endosulfans and endrin aldehyde could be accelerated under ASE condition - high pressure, high temperature. Organic and non-organic vegetables were collected and their concentrations of residual organochlorine pesticides were determined by the ASE concentration technique coupled to GC/ECD. No residual organchlorine pesticides were determined over criteria level in most of vegetables regardless organics or non-organics except non-organic cabbage. 0.015 mg/ kg of heptachlor epoxide(exo) was found in a non-organic cabbage. Also trace amount of endosulfans were detected in non-organic lettuces, young radishes and sesame leaves. Notably, endosulfan was also detected in organic sesame leaves although it was at a trace level. It could be either the consequence of illegal use of pesticides or cross contamination during the distribution process.

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