摘要
研究了小麦茎叶、籽粒和土壤中辛硫磷残留物的液相色谱分析方法。该方法仪器最小检出量为0.5 ng;当小麦籽粒和土壤中辛硫磷的添加浓度为0.02,0.2,2 mg/kg时,样品的平均回收率为89.8%-98.9%,变异系数为0.8%-5.7%,最低检测浓度为0.02 mg/kg;当茎叶中辛硫磷的添加浓度为0.04,0.4,2 mg/kg时,样品的平均回收率为89.7%-95.8%,变异系数为0.5%-5.9%,最低检测浓度为0.04 mg/kg。方法的灵敏度、精密度和检测限都符合农药残留分析的要求。
A method was developed to determine residue of phoxim in wheat and soil by HPLC. The lowest detection limit of instrument for phoxim was 0.5 ng. The average recovery of wheat and soil samples at the spiked amount of 0.02, 0.2,2.0 mg/kg was 89.8 % - 98.9 %, and the coefficient of variation was 0.8 % - 5.7 %, the lowest detectable concentrations of various samples were 0.02 mg/kg. The average recovery of plant samples at the spiked amount of 0.04,0.4, 2.0 mg/kg was 89.7 % - 95.8 %, and the coefficient of variation was 0.5 % - 5.9 %, the lowest detectable concentration was 0.04 mg/kg. This method proved sensitive, accurate and precise for pesticide residue analysis.
出处
《华北农学报》
CSCD
北大核心
2008年第2期210-213,共4页
Acta Agriculturae Boreali-Sinica
基金
农业部农药检定所农药残留试验项目(2006-2007)
