QuEChERS结合气相色谱-质谱联用技术测定六类茶叶中农药残留的基质效应研究
Study on Matrix Effect of Determination of Pesticide Residues in Six Types of Tea by QuEChERS Combined with Gas Chromatography-Mass Spectrometry
杨香娟 1赵阿璇 1亓文娟 1李丹 1袁亚娟1
作者信息
- 1. 咸阳市食品药品检验检测中心,陕西咸阳 712000
- 折叠
摘要
采用QuEChERS结合气相色谱-质谱联用技术测定6 类茶叶中 5 种农药残留,并研究测定过程中存在的基质效应.结果表明,不同茶叶不同化合物呈现出差异较大的基质增强效应,其中氧乐果在不同茶叶中均表现出强基质效应;红茶和茯砖茶中4 种农药均表现出较大的基质增强效应.茶叶中农药残留加标回收率为 70.3%～127.0%,表明基质对回收率具有校正作用,但不同基质的校正作用不同.
Abstract
QuEChERS combined with gas chromatography-mass spectrometry was used to determine the residues of five pesticides in six types of tea,and the matrix effects in the determination process were studied.The results showed that different compounds in different teas showed different matrix enhancement effects.Among them,omethoate showed strong matrix effects in different teas;the four pesticides in black tea and Fuzhuan tea showed large matrix enhancement effects.The recoveries of pesticide residues in tea were 70.3%～127.0%,indicating that the matrix had a correction effect on the recovery,but the correction effect of different matrices was different.
关键词
茶叶/基质效应/加标回收率/农药残留Key words
tea/matrix effect/spike recovery rates/pesticide residues引用本文复制引用
出版年
2024
NETL
NSTL
万方数据