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GC-MS/MS를 이용한 축산물 중 알드린 및 헵타클로르의 동시분석방법
이종화 ( Jonghwa Lee ),안다이 ( Dai An ),곽윤선 ( Yun-seon Kwak ),박주현 ( Ju Hyeon Park ),오미현 ( Mi Hyun Oh ),서수경 ( Soo Kyung Suh ) 한국환경농학회 2022 한국환경농학회 학술대회집 Vol.2022 No.-
Aldrin and heptachlor are a member of so-called “classic organochlorine” pesticides which can be highly toxic to the ecosystem through bioaccumulation. Although the use of these pesticides has been banned, sustainable management of the risk by bioconcentration is required due to its persistent nature. Aldrin and heptachlor including their metabolites (or a pesticide itself for dieldrin) are typical non-polar pesticides and it can be challenging to analyze the residues in fatty matrices such as beef and bovine fat due to the non-polar chemical property. Here we describe the development and validation of an analytical method for the quantitation of the aldrin and heptachlor residues in livestock matrices. The determination method involves analysis using a GC-MS/MS and QuEChERS sample preparation. In particular, it was found that the isomeric heptachlor metabolites, heptachlor epoxide A and B, have specific MRM conditions that can increase the signal. The ratio of sample amount vs. extraction solvent volume and the effectiveness of freezing out during the sample preparation procedure were also tested. Results for beef and egg matrices were compliant with the validation guideline described in Food and Drug Safety Document. Also, the results demonstrate that the workflow based on GC-MS/MS with a high sample/extraction solvent ratio and freezing-out procedure can overcome the issues experienced with previous methods reported for the analysis of fat-soluble and non-polar pesticides.
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