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[目的]研究同时测定香蕉和土壤中的肟菌酯及其代谢物肟菌酸(CGA21113)和戊唑醇的残留的分析方法。[方法]采用乙腈进行提取,通过加入氯化钠进行盐析达到样品的快速净化的目的,使用气相色谱-氮磷检测器同时测定。[结果]香蕉和土壤中3种检测物的最小检出量为肟菌酯0.01 ng,肟菌酸0.02 ng,戊唑醇0.01 ng。[结论]方法准确度和精密度较高,线性关系良好,具有简便、快速、准确及分离效果好的优点,可用于3种农药残留的检测分析。
[Objective] The research aimed to study the simultaneous determination of trifloxystrobin and its metabolites trifloxacin (CGA21113) and tebuconazole in banana and soil. [Method] The extraction was carried out by acetonitrile. The salting-out was carried out by adding sodium chloride to achieve the purpose of rapid purification of the sample. Simultaneous determination was carried out by gas chromatography-nitrogen / phosphorus detector. [Result] The minimum detectable amount of the three kinds of detection substances in banana and soil was 0.01 ng of trifloxystrobin, 0.02 ng of triflumuron and 0.01 ng of tebuconazole. [Conclusion] The method has high accuracy and precision, good linearity, and has the advantages of simple, rapid, accurate and good separation effect, and can be used for the detection and analysis of three kinds of pesticide residues.