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[目的]建立咪鲜胺及其代谢物在葡萄及土壤中的的残留分析方法。[方法]土壤样品用乙腈提取,葡萄样品用二氯甲烷提取,盐酸吡啶使之分解,石油醚萃取,GC-ECD检测。[结果]土壤和葡萄中的平均添加回收率分别为82.4%～97.4%、81.8%～88.3%,变异系数分别为2.09%～4.63%、4.04%～5.80%,仪器最小检出量为6×10-13g,土壤和葡萄中的最低检出质量分数均为0.01 mg/kg。[结论]该方法准确可靠、重复性高、线性关系良好、分离效果好,满足残留分析要求,可用于葡萄和土壤中咪鲜胺及其代谢物的残留分析。
[Objective] The research aimed to establish a method for residual analysis of prochloraz and its metabolites in grape and soil. [Method] The soil samples were extracted with acetonitrile, the grape samples were extracted with dichloromethane, decomposed with pyridine hydrochloride, extracted with petroleum ether and detected by GC-ECD. [Result] The average recoveries of soil and grapes were 82.4% -97.4% and 81.8% -88.3%, respectively, and the coefficients of variation were 2.09% -4.63% and 4.04% -5.80%, respectively. The minimum detectable quantity was 6 × 10-13g, soil and grapes minimum detectable mass fraction of 0.01 mg / kg. [Conclusion] The method was accurate and reliable with high repeatability, good linearity, good separation effect and met the requirements of residue analysis. It could be used for the residual analysis of prochloraz and its metabolites in grape and soil.