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液相色谱-串联质谱同时检测水稻样品中乙基多杀菌素及其代谢物残留

Qiang FU,Yingjie HUANG,Qiming FU,Ji LIANG,Jing MA,Xue FENG,Shuangshuang LI

Chinese Journal of Pesticide Science（2017）

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Abstract
采用液相色谱-串联质谱(LC-MS/MS)技术建立了同时检测水稻植株、谷壳、糙米中乙基多杀菌素及其代谢物N-demethyl-175-J和N-formyl-175-J残留的分析方法.样品采用乙腈提取,经分散固相萃取(PSA)净化,LC-MS/MS检测.结果表明:在0.02、0.2和2 mg/kg添加水平下,乙基多杀菌素及其代谢物的平均回收率在73%~105%之间,相对标准偏差(RSD)在0.9%~10%之间.乙基多杀菌素-J和-L的定量限(LOQ)分别0.016和0.004 mg/kg,代谢物的定量限(LOQ)为0.02 mg/kg.该方法操作简便、稳定和快速,可以满足水稻样品中乙基多杀菌素及其代谢物的定性与定量分析要求.
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spinetoram,metabolites,rice,chromatography-tandem
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