1. Development of a GC-MS/MS method for determination of organochlorine pesticide residues in wild Ligusticum chuanxiong and chestnut.
- Author
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Cheng, Linli, Shen, Jianzhong, Zhang, Suxia, Xu, Yanjun, Ma, Xiaodong, Li, Chongjiu, and Lin, Yan
- Subjects
PESTICIDE residues in food ,ORGANOCHLORINE pesticides ,DIEFFENBACH'S speargrass ,SPRAYING & dusting in agriculture ,AROMATIC compounds ,EVAPORITES - Abstract
A gas chromatographic-tandem mass spectrometric method ( GC-MS/MS) has been developed for sensitive and reliable detection of 8 organochlorine pesticide residues in wild L. chuanxiong and chestnut. The target compounds were extracted from both samples and simultaneously rudely cleaned up by water-acetone and dichloromethane. Then, the obtained dichloromethane phase was evaporated to dry, treated with HSO, centrifuged, evaporated and redissolved in 0.5 mL of benzene for GC-MS/MS detection. When spiked from 5 to 500 μg/kg, the average recoveries of organochlorine pesticides in two kinds of sample ranged from 74.2 to 110.9% with the intra-day RSD of 0.1 to 10.1% and the inter-day RSD of 0.7 to 10.5%. The limit of detection of eight compounds varied from 0.13 to 1.2 μg/kg in two kinds of samples. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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