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投稿时间：2017-01-12
投稿时间：2017-01-12
中文摘要: 建立分散固相萃取（DSPE）-液相色谱-质谱法（LC-MS/MS）测定海红果中 9 种杀菌剂（嘧霉胺、百菌清、稻丰 散、甲霜灵、三唑酮、五氯硝基苯、烯酰吗啉、咪鲜胺、苯醚甲环唑）残留量的检测方法。样品匀浆粉碎后经乙腈提取、氧 化铝萃取剂净化后， 采用 Atlantis T3 色谱柱分离，LC-MS/MS 测定。 结果表明：9 种杀菌剂在 5.0 μg/L～500 μg/L 范围 内，呈良好的线性关系，线性相关系数 R2≥0.999 3；检出限为 0.03 μg/kg～1.0 μg/kg，定量限为 0.1 μg/kg～3.0 μg/kg；回 收率在 80.4 %～102.3 %，相对标准偏差（RSD）在 1.1 %～5.8 %之间。
Abstract:A method were developed for determination of nine fungicides（pyrimethanil， chlorothalonil， phen－ thoate， metalaxyl， triadimefon， pentachloronitrobenzene， dimethomorph， prochloraz and difenoconazole） in Malus micromalus makino by dispersive solid phase extraction（DSPE） and liquid chromatography tandem mass spectrometry（LC-MS/MS）. The sample were homogenized and extracted by acetonitrile and purified by alumi－ na extractant， and separated by Atlantis T3 column， and determined by LC-MS/MS. The results showed that the standard curves of nine fungicides showed good linear responses in the range of 5.0 μg/L-500.0 μg/L， and the linear correlation coefficient R2 were no less than 0.999 3； the limits of detection were in the range of 0.03 μg/kg-1.0 μg/kg， and the limit of quantification were in the range of 0.1 μg/kg-3.0 μg/kg； the rate of recovery were in the range of 80.4 %-102.3 %， and the relative standard deviation （RSD） were in the range of 1.1 %-5.8 %.
keywords: fungicide dispersive solid phase extraction liquid chromatography tandem mass spectrometry （LC-MS/MS） Malus micromalus makino
文章编号：201717037 中图分类号： 文献标志码：A
基金项目:
| Author Name | Affiliation |
| XU Hui-jiao | Ulanqab Vocational College， Ulanqab 012000， Inner Mongolia， China |
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