Multiresidual Pesticide Analysis in Crude Drug -Gas Chromatographic Analysis of 16 Controlled Pesticides-

생약 중 잔류농약의 분석(I) - GC에 의한 16종의 잔류 규제 농약의 분석 -

A method for the determination of 16 residual pesticides in crude deugs was examined. Crude drug was extracted with acetonitrile/water solution and the extract was partitioned between hexane/CH$_{2}$Cl$_{2}$ and NaCl saturated water. The organic layer was passed through cleanup column and subjected to the GC/ECD or GC/NPD analysis. Essential oil components in crude drug interfere with the analysis, and sulfuric acid treatment was adapted to overcome this interference.