QuEChERS-气相色谱法测定果蔬汁中啶虫脒与哒螨灵的农药残留

Li CHEN,Jialian SHENG, Xuyun FANG, Wenchun WU,Xiaoyun YANG,Xinnian ZENG

The Food Industry（2019）

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Abstract

试验旨在建立果蔬汁中啶虫脒与哒螨灵同时检测的残留分析方法.啶虫脒和哒螨灵两种农药残留分析采用QuEChERS方法与气相色谱仪相结合.果蔬汁样品经乙腈涡旋振荡提取,采用PSA (N-丙基乙二胺)、C18(十八烷基键合硅胶)、GCB(石墨化碳黑)净化,用气相色谱仪检测.结果表明,该方法在0.001～1.000 mg·L-1线性范围内线性关系良好,相关系数(r)均大于0.999,最低检出限为1.0～2.5 μg·-1.当3个加标浓度水平为0.002,0.01和0.1mg·kg-1时,平均加标回收率为84.0％～119.0％ (n=6),相对标准偏差(RSD)为1.77％～13.36％ (n=6).该方法灵敏、准确,结果可靠,适用于果蔬汁中啶虫脒与哒螨灵的农药残留分析.

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