QuEChERS-LC-MS/MS法测定樱桃中63种农药残留量

Determination of 63 Kinds of Pesticide Residues in Cherry Using QuEChERS-LC-MS/MS

于晓慧 ¹李俏 ²魏爱云²

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作者信息

1. 山东特检科技有限公司,山东济南 250000
2. 方圆标志检验检测(山东)有限公司,山东济南 250100
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摘要

建立QuEChERS结合液相色谱-串联质谱法同时测定樱桃中 63 种农药残留的分析方法.样品经过乙腈提取,采用 SpeedTest-QuEChERS 净化包进行净化,用LC-MS/MS MRM正负离子模式测定,外标法定量.63 种农药在 1.0～200 μg/L范围内线性关系良好,相关系数(r)均大于 0.996,方法定量限为 0.12～16.0 μg/kg,63 种农药在 20,50 和 100 μg/kg 添加水平的回收率在 76.9%～106.7%,相对标准偏差为 0.76%～4.52%(n=6).该方法前处理过程简单,检测结果准确稳定,适用于大批量樱桃中农药残留的检测.

Abstract

To establish a method for the simultaneous determination of 63 pesticide residues in chrrry by QuEChERS combined with liquid chromatography-tandem mass spectrometry.The samples were extracted with acetonitrile and purified by SpeedTest-QuEChERS,then analyzed by HPLC-MS/MS with MRM under positive ion mode of electrospray ionization.The linear relationship of 63 pesticides was good in the range of 1.0～200 μg/L,the correlation coefficients were more than 0.996,and the limit of quantification were 0.12～16.0 μg/kg.The recoveries of 63 pesticides at 20,50 and 100 μg/kg levels ranged from 76.9%to 106.7%,and the relative standard deviation was 0.76%～4.52%(n=6).This method has positive signifificance for market access and monitoring of cherry.

关键词

高效液相色谱-串联质谱/QuEChERS/樱桃/农药残留

Key words

liquid chromatography-tandem mass spectormetry/QuEChERS/cherry/pesticide residues

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出版年

2024

山东化工

山东省化工研究院山东省化工信息中心

山东化工

影响因子：0.249

ISSN：1008-021X

参考文献量10

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