摘要
目的:建立一种操作简单且稳定性强,可有效检测出稻谷中20种农药残留的分析方法。方法:稻谷样品粉碎后经1%乙酸乙腈提取,利用QuEChERS改良前处理技术进行合理地净化和过滤处理后,经液相色谱串联质谱仪测定。结果:目标化合物线性具有良好的关系,且R^(2)> 0.995,加标回收率在61.4%~113.3%,相对标准偏差在0.1%~14.2%。结论:该方法检测效率高、成本低,能够实现稻谷中20种农药残留的快速准确测定。
Objective: To establish an analytical method with simple operation and strong stability, which can effectively detect 20 kinds of pesticide residues in rice. Method: The rice samples were pulverized and extracted with 1% acetic acid and acetonitrile. After reasonable purification and filtration treatment with the improved QuEChERS pretreatment technology, they were determined by liquid chromatography tandem mass spectrometer.Result: The target compound had a good linear relationship, and R^(2)> 0.995, the recovery rate of standard addition was 61.4% ~ 113.3%, and the relative standard deviation was 0.1% ~ 14.2%. Conclusion: The method has high detection efficiency and low cost, and can realize the rapid and accurate determination of 20 pesticide residues in rice.
作者
李圆圆
LI Yuanyuan(Nantong Material Reserve and Grain and Oil Quality Supervision Center,Nantong 226018,China)
出处
《食品安全导刊》
2022年第26期50-54,共5页
China Food Safety Magazine
关键词
稻谷
多功能针式过滤器
液相色谱串联质谱仪
农药残留
rice
multifunctional needle filter
liquid chromatography tandem mass spectrometer
pesticide residues
