Determination of nitenpyram residue in cabbage and soil using gas chromatography
气相色谱法分析甘蓝及其土壤中的烯啶虫胺残留

An analytical method for the determination of nitenpyram residue in cabbage and soil using gas chromatography was established. The nitenpyram residue was extracted from cabbage and soil with acetone-water (4:1, v/v), cleaned up by a Florisil column, and then detected by gas chromatography-electron capture detection (GC-ECD). At the spiked level range from 0.02 to 2.00 mg/kg, the average recoveries of nitenpyram were 88.73%~94.13% and 90.82%~96.27% with the relative standard deviations (RSDs) of 3.09%~7.39% and 2.01%~4.92%in cabbage and soil, respectively. The limit of detection of nitenpyram was 0.02 mg/kg. The method is fast, sensitive, simple, reproducible and practical for the determination of nitenpyram residue in environmental systems.