QuEChERS sample preparation system combined with high performance liquid chromatography-mass spectrometry for the determination of seven nicotine insecticide residues in soil
The QuEChERS sample preparation system combined with high performance liquid chromatography-mass spectrometry(HPLC)was developed for the determination of 7 nicotinic insecticides chlorfenamide,thiamethoxam,imidacloprid,dinidamidine,enidacloprid,thiamethoxam in soil.The linear relationships of the 7 nicotinic insecticides were good in the range of 0.005～0.80μg·mL-1,and the correlation coefficients were all greater than 0.995.The detection limits were 0.011、0.009、0.007、0.005、0.009、0.006、0.012 μg·kg-1,respectively.The average recoveries of the three levels were between 87.4％and 103.2％.This method has the advantages of good specificity,high detection accuracy and high sensitivity,and is suitable for the monitoring of trace nicotinoid insecticide residues in planting soil.
万方数据
维普
