Residue determination of hexaflumuron in cabbage and soil by gas chromatography

Objective To establish a gas chromatography method for determining the residues of hexaflumuron in cabbage and cabbage planting soil. Methods The samples of cabbage and soil were extracted with acetonitrile and determined by gas chromatography with ECD detector. Results The method showed a good linearity between the concentration of hexaflumuron and the peak areas in the range of 0.05~10 mg/L with r=0.9998. The limits of detection (LOD) was 0.018 ng. The average recoveries were 85.41%~93.44% in cabbage and 88.41%~96.05% in soil, and the relative standard deviations (RSD) ranged from 2.17%~7.52% in cabbage and 4.37%~7.33% in soil, respectively. The limits of quantification (LOQ) was 0.02 mg/kg. Conclusion The established method is simple, accurate, reproducible and practical, and can meet the requirements of pesticide residue analysis.