Simultaneous Determination of 70 Pesticide Residues in Coffees by Gas Chromatography-mass Spectrometry

• 全文链接

气相色谱-质谱联用同时测定咖啡中70种农药残留

关键词：

来源：

IEEE 会议

全文链接：

//agri.nais.net.cn/topic/downloadFile/f49258ee-071d-4b62-b564-7bd4f928b9eb

来源地址：

https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5515755

资源所属：

茶学研究专题

类型：

会议论文

语种：

英语

原文发布日期：

2010-06-18

摘要：

An efficient and sensitive method for simultaneous determination of 70 pesticide residues in coffees has been established and validated. The multiresidue analysis of the pesticides in coffees involved extraction with ethyl acetate, clean-up using gel permeation chromatography (GPC) and solid-phase extraction (SPE), and subsequent identification and quantification of the selected pesticides by gas chromatography-mass spectrometry (GC-MS). and then quantified with an external standard method. Recoveries of pesticides ranged from 61% to 127% at the spiked level of 0.005-2.5 mg/kg, while the relative standard deviation was between 2% and 17%. In addition, the limits of determination (0.005 mg/kg to 0.5 mg/kg) revealed that simultaneous determination of multi-residues in coffees was possible.