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投稿时间：2017-02-14
投稿时间：2017-02-14
中文摘要: 建立同时检测芹菜中氟甲腈、氟虫腈硫醚、氟虫腈、氟虫腈砜4种农药残留的气质联用检测方法。样品经乙腈提取后，浓缩过石墨化炭黑/氨基固相萃取柱净化，洗脱液洗脱浓缩定容后检测。4种农药在0.01 mg/L～1.0 mg/L范围内线性关系良好（R≥0.999 2），平均回收率为82.9%～102.2%，精密度为2.18%～5.66%，均满足定量分析的要求。4种农药残留的定量限为0.002 mg/kg。
Abstract:An analytical method for the qualitative and quantitative analysis of fipronil and its metabolites residues in celery was developed by using gas chromatography-mass spectrometry．The celery sample was extracted with acetonitrile，followed by solid phase extraction with carbon/NH2.The fipronil and its metabolites showed good linearities in the range of 0.01 mg/L-1.0 mg/L，with correlation coefficients（R）higher than 0.999 2．The average recoveries of fipronil and its metabolites in celery were in the range of 82.9%-102.2%，with relative standard deviations of 2.18%-5.66%．The detection limits of the method were 0.002 mg/kg.
keywords: fipronil and its metabolites solid phase extraction gas chromatography-mass spectrometry celery
文章编号：201719036 中图分类号： 文献标志码：A
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