Simultaneous determination of 70 pesticide residues in coffees by gas chromatography-mass spectrometry

Xin Yang*, Jing Wang, Hua Zhang, Dechang Xu, Jianwei Qiu, Zhen Yu Wang, Wei Qiang Cao

*Corresponding author for this work

Research output: Chapter in Book or Report/Conference proceedingConference Proceedingpeer-review

Abstract

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.

Original languageEnglish
Title of host publication2010 4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010 - Chengdu, China
Duration: 18 Jun 201020 Jun 2010

Publication series

Name2010 4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010

Conference

Conference4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010
Country/TerritoryChina
CityChengdu
Period18/06/1020/06/10

Keywords

  • Coffee
  • GC-MS
  • GPC
  • Multi-residue analysis
  • Pesticides
  • SPE
  • Validation

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