Analysis of Thiosultap in Hulled Rice by Derivatization

유도체화 반응에 의한 현미 중 thiosultap의 분석

  • 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)
  • 최정희 (식품의약품안전평가원 화학물질과) ;
  • 도정아 (식품의약품안전평가원 화학물질과) ;
  • 윤혜정 (식품의약품안전평가원 화학물질과) ;
  • 박용춘 (식품의약품안전평가원 화학물질과) ;
  • 김재훈 (식품의약품안전평가원 화학물질과) ;
  • 최동미 (식품의약품안전평가원 화학물질과)
  • Received : 2010.01.19
  • Accepted : 2010.02.03
  • Published : 2010.03.31

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 $96.1{\pm}7.9\sim100.8{\pm}6.1%$.

Thiosultap은 중국에서 사용되고 있는 nereistoxin계 살충제로 국내에는 등록되지 않아 중국산 농산물 수입시 잔류 농약 안전관리를 위한 시험법 마련이 시급한 실정이다. 이에 본 연구에서는 현미 중 thiosultap을 염기조건에서 nereistoxin으로 유도체화하여 GC-FPD로 분석하는 시험법을 개발하였다. 산염기 분배를 이용한 정제 조건을 확립하였으며, 확립된 시험법에 의한 정량한계와 직선성을 측정한 결과 각각 0.05 mg $kg^{-1}$과 0.995$(r^2)$이었다. 무처리 현미에 thiosultap 0.5와 2.5 mg $kg^{-1}$을 처리하여 회수율을 측정한 결과는 $96.1{\pm}7.9\sim100.8{\pm}6.1%$로 양호한 결과를 나타내었다.

Keywords

References

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