Automated multi-plug filtration cleanup method for analysis of 48 pesticide residues in green tea using liquid chromatography-tandem mass spectrometry

• 全文链接

液相色谱-串联质谱法分析绿茶中48种农药残留的自动快速滤过型净化方法

关键词：

来源：

Food Control 期刊

全文链接：

//agri.nais.net.cn/topic/downloadFile/3af06b05-d59d-4081-a2c7-0a353382511e

来源地址：

https://www.sciencedirect.com/science/article/pii/S0956713521005740

资源所属：

茶学研究专题

类型：

学术文献

语种：

英语

原文发布日期：

2022-01-20

摘要：

An automated multi-plug filtration cleanup (m-PFC) method, based on QuEChERS extraction was developed for the analysis of 48 pesticides in green tea. The carboxyl functionalized multi-walled carbon nanotubes (MWCNTs-COOH) were firstly packed in m-PFC columns and functioned as promising sorbents with better clean-up capability. The different parameters of automated m-PFC equipment and extraction conditions were optimized. The automated method integrated cleanup and filtration (through filter membrane) procedure into a single run before injected to the detection instrument. Comparison to d-SPE and manual m-PFC method, the automated method could handle a batch of samples simultaneously with better purification effect. Acceptable recoveries at three concentration levels from 71% to 114% were obtained (except carbendazim and bifenazate) with relative standard deviations lower than 18%. The proposed automated m-PFC method offered a great compromise between rapidity, convenience and efficiency. It was successfully applied for market monitoring of pesticide residues with robust analyze data.