Simultaneous determination of six pesticide residues in soil by GC-MS
A gas chromatography-mass spectrometry(GC-MS)method was developed for the simultaneous determination of residues of six insecticides in soil samples:sclerotinide,isomylurea,acetamidine,cyhalothrin,indocarb and deltamethrin.All the six insecticides had good correlation in the linear range of 2.00~100 µg·L-1,with correlation coefficients greater than 0.995,detection limits ranging from 0.006 to 0.021 mg·kg-1,sample recoveries ranging from 88.3%to 104.8%,and relative standard deviations less than 5%.The method has the advantages of simple pretreatment,high sensitivity and accurate test results,and is suitable for the detection of pesticide residues in soil samples.
solid phase extractiongas chromatography mass spectrometrysoilinsecticide