气相色谱法测定大豆·土壤中高效氟吡甲禾灵  

Gas Chromatographic Determination of Haloxyfop-R-methyl in Soybean and Soil

作　　者：吴祥为[1] 张海云[1] 刘军[1] 花日茂[1] 

机构地区：[1]安徽农业大学资源与环境学院安徽省农产品安全重点实验室,安徽合肥230036

出　　处：《安徽农业科学》2010年第18期9593-9594,9605,共3页Journal of Anhui Agricultural Sciences

基　　金：农业部农药残留登记项目;2010年高校省级优秀青年人才基金项目(2010SQRL059)

摘　　要：[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]A method was developed for gas chromatographic determination of haloxyfop-R-methyl in soybean and soil. [Method]Residues of haloxyfop-R-methyl were extracted with an aqueous solution of methanol.The solution was extracted with benzene.The extracts were cleaned up with acid alumina column and were analyzed by gas chromatography with electron capture detection.[Result]The recovery of this method in soybean caudex,soil and soybean was 74.05%-82.25%,85.92%-102.38% and 93.75%-97.55%,respectively.The limit of detection of haloxyfop-R-methyl was 2×10-3ng.The limit of quantification of soybean plants,soil and soybean was 0.002,0.002 and 0.01 mg/kg,respectively.[Conclusion]The method in this study could meet the requirements of pesticide residue analysis in sensitivity,accuracy and precision.

关 键 词：高效氟吡甲禾灵 大豆 土壤 残留 

分 类 号：S482.4[农业科学—农药学]