改进的QuEChERS气相色谱-串联质谱法测定草莓中21种杀菌剂残留

被引：41

作者：

侯雪

韩梅

邱世婷

胡莉

雷绍荣

机构：

[1] 四川省农业科学院分析测试中心/农业部农产品质量安全风险评估实验室(成都)

来源：

农药学学报 | 2017年 / 19卷 / 01期

关键词：

QuEChERS; 气相色谱-串联质谱; 草莓; 杀菌剂; 残留;

D O I：

暂无

中图分类号：

S481.8 []; S668.4 [草莓]; O657.63 [质谱分析];

学科分类号：

070302 [分析化学]; 090201 [果树学];

摘要：

采用改进的Qu ECh ERS气相色谱-串联质谱法建立了检测草莓中21种杀菌剂（螺环菌胺、甲霜灵、四氟醚唑、酞菌酯、嘧菌环胺、戊菌唑、氟吡菌酰胺、氟菌唑、嘧菌胺、E-苯氧菌胺、抑霉唑、腈菌唑、醚菌酯、环氟菌胺、肟菌酯、丙环唑、环酰菌胺、氟环唑、咪唑菌酮、啶酰菌胺、嘧菌酯）残留的方法。样品经乙腈提取,采用N-丙基乙二胺（primary secondary amine,PSA）和石墨化碳黑（graphitized carbon blacks,GCB）作为分散固相萃取（dispersive solid phase extraction,DSPE）的吸附材料,净化液经氮气吹干、用V（正己烷）:V（丙酮）=9:1混合溶液定容,采用气相色谱-串联质谱（gas chromatography-tandem mass spectrometry,GCMS/MS）测定。结果表明:在质量浓度0.005～0.2 mg/kg范围内,21种杀菌剂与对应的峰面积间呈良好的线性关系;在0.01、0.05和0.1 mg/kg 3个添加水平下,21种杀菌剂的平均回收率均在70%122%之间,RSD<20%。该方法适用于草莓中21种杀菌剂残留的快速、高效和准确分析。

引用

页码：46 / 52

页数：7

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