2019년 유통 농산물의 비극성 유기인계 잔류농약 16종에 대한 동시분석방법과 모니터링

Abstract

Simultaneous analysis of 16 nonpolar organophosphorus pesticides is known to be difficult because they are grouped by the different ranges of physical and chemical characteristics, simultaneous analysis has been tried by sample extraction, refining, and instrument analysis only for each group. The purpose of this study was to ensure the reliability for simultaneous analysis of the 16 nonpolar organophosphorus pesticides by classifying them according to their similarities in physical and chemical properties using analytic methods of gas chromatography and NPD (nitrogen-phosphorus detector). Therefore, the analysis method included or added to food samples is applied with more advanced analysis techniques, simplified and organized for the analytical process for the improvement and improvement of the analysis efficiency. The 15 non-polar organophosphorus pesticides showed excellent linearity with a correlation coefficient of 0.9992. The results for recovery test to confirm the accuracy was 74.9 ~ 118.2%. The detection limit (LOD) was measured based on S/N ratio of 3 or higher and the quantitation limit (LOQ) was measured based on S/N ratio of 10 or higher. As a result of validation for 15 non-polar organophosphorus pesticides analysis, LOD and LOQ were 0.001 ~ 0.003(mg/kg) and 0.003 ~ 0.01(mg/kg), respectively. Verification of 16 nonpolar organophosphorus pesticides resulted in the exclusion of bensulide with low NPD sensitivity and fensulfothion with low recovery rate, so the other 14 nonpolar organophosphorus pesticides can be simultaneously analyzed among 16 nonpolar organophosphorus pesticides. These results will give valuable information for the analysis of nonpolar organophosphorus pesticides and other pesticides in agricultural food products.