A Study on the Simultaneous Analysis of Regulated Pesticides Residues from Rice and Soy Bean

摘要

The simultaneous determination method which simply determined regulated pesticides was investigated. Sample was extracted with acetone-methanol and partitioned with methylene chloride after addition of saturated NaCl solution. Entract was purified by Bio-Beads S-X3 column using cyclohexane-methylene chloride (1 : 1) as eluate. The determination of pesticides was performed by BP-1 capillary column gas chromatography using ECD and NPD. The average recoveries of pesticides in rice and soy fbean were over 83% and 81%, respectively. It was possible to detect pesticides in rice up to 0.002 ppm by ￥á-BHC and up to 0.05 ppm by carbaryl and in soy bean up to 0.01 ppm by ￥á-BHC and up to 0.3 ppm by carbaryl.