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[目的]建立高效氟吡甲禾灵在大豆和土壤中残留的分析方法。[方法]大豆和土壤样品用甲醇水混合溶液提取,经苯液液萃取,酸性氧化铝柱层析净化,最后采用气相色谱法测定其中高效氟吡甲禾灵含量。[结果]空白大豆植株的平均添加回收率为74.05%～82.25%,变异系数为2.15%～3.94%;土壤的平均添加回收率为85.92%～102.38%,变异系数为1.89%～7.59%;大豆的平均添加回收率为93.75%～97.55%,变异系数为1.33%～14.21%。高效氟吡甲禾灵的最小检出量为2×10-3ng,大豆植株、土壤、大豆中高效氟吡甲禾灵的最低检测浓度分别为0.002、0.002、0.01mg/kg。[结论]该方法的灵敏度、准确度、精确度完全满足农药残留分析要求。
[Objective] The research aimed to establish a method for the analysis of the residues of high-efficiency flumazone in soybean and soil. [Method] Soybeans and soil samples were extracted with methanol-water mixed solution, purified by benzene liquid extraction and acidic alumina column chromatography. Finally, the content of high-effective flumethoxol was determined by gas chromatography. [Result] The average recoveries of blank soybean plants ranged from 74.05% to 82.25% and the coefficients of variation were from 2.15% to 3.94%. The average recoveries of soils from 85.92% to 102.38% and the coefficients of variation from 1.89% to 7.59% The average recovery was 93.75% ~ 97.55%, the coefficient of variation was 1.33% ~ 14.21%. The minimum detectable volume of high-efficiency flumethrine was 2 × 10-3ng. The minimum detectable concentrations of high-efficiency flumethrin in soybean plants, soils and soya were 0.002,0.002 and 0.01mg / kg, respectively. [Conclusion] The sensitivity, accuracy and accuracy of this method completely meet the requirements of pesticide residue analysis.