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Simultaneous detection method for pesticide residues in meat by gas chromatograph-mass selective detector  

Hong In-Suk (Seoul Metropolitan Health & Environment Research Institute)
Choi Yoon-Hwa (Seoul Metropolitan Health & Environment Research Institute)
Kweon Taek-Boo (Seoul Metropolitan Health & Environment Research Institute)
Lee Jung-Hark (Seoul Metropolitan Health & Environment Research Institute)
Publication Information
Korean Journal of Veterinary Service / v.28, no.3, 2005 , pp. 285-294 More about this Journal
Abstract
This study was conducted to investigate the extraction method for the determination of organochlorine, organophosphorus and synthetic pyrethroid pesticide residues in beef fat by gas chromatography-mass selective detector(GC-MSD). Twenty one pesticide residues in fat were determined using a simple and rapid procedure based on solid- phase extraction(SPE) clean-up cartridges with octadecyl $(C_{18})-bonded$ porous silica, florisil, $10\%$ deactivated florisil. a tandem $C_{18}$ and florisil and a tandem $C_{18}$ and $10\%$ deactivated florisil. Solvent-solvent extraction using acetonitrile was not satisfied to eliminate fat interference for pesticide residue analysis by GC-MSD, and the recoveries of the method in fat ranged from 16.2 to $57.3\%$ except DDT$(83.2\%)$. The recoveries of SPE methods using a tandem $C_{18}$ and Florisil was $59.6\~123.8\%$ except fenitrothion $(135.2\%)$. the SPE method was verified the satisfactory performance of pre-treatment for pesticide residues analysis in fat by GC-MSD. The efficiency of florisil deactivated with $10\%$ water has been not proved significantly on recoveries of pesticide residues in fat.
Keywords
GC-MSD; Pesticide residue analysis; Solid phase extraction;
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