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Analysis of Thiosultap in Hulled Rice by Derivatization  

Choi, Jeong-Heui (Food Chemical Residues Division, National Institute of Food and Drug Safety Evaluation)
Do, Jung-Ah (Food Chemical Residues Division, National Institute of Food and Drug Safety Evaluation)
Yoon, Hae-Jung (Food Chemical Residues Division, National Institute of Food and Drug Safety Evaluation)
Park, Yong-Chun (Food Chemical Residues Division, National Institute of Food and Drug Safety Evaluation)
Kim, Jae-Hun (Food Chemical Residues Division, National Institute of Food and Drug Safety Evaluation)
Choi, Dong-Mi (Food Chemical Residues Division, National Institute of Food and Drug Safety Evaluation)
Publication Information
The Korean Journal of Pesticide Science / v.14, no.1, 2010 , pp. 16-20 More about this Journal
Abstract
Thiosultap, a nereistoxin analog insecticide, registered in China has been used to control selected beetles and Lepidopteran pests on rice, vegetables and fruit trees. Although domestic use of thiosultap is not permitted, it is needed to monitor this insecticide from imported crops because that has been used on crops in many foreign countries, especially China. Thiosultap in hulled rice was determined as nereistoxin derived in basic condition by GC-FPD. This method accomplished ion-associated liquid-liquid partitioning for cleanup, and limit of quantification and linearity performed by the established method were 0.05 mg $kg^{-1}$ and 0.995$(r^2)$. The recoveries performed by control hulled rice fortified with thiosultap at 0.5 and 2.5 mg $kg^{-1}$ were $96.1{\pm}7.9\sim100.8{\pm}6.1%$.
Keywords
GC-FPD; GC-MS; hulled rice; nereistoxin; thiosultap;
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