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

文献类型： 会议论文

第一作者： Xin Yang

作者： Xin Yang 1 ; Jing Wang 1 ; Hua Zhang 2 ; Dechang Xu 2 ; Jianwei Qiu 2 ; ZhenYu Wang 2 ; WeiQiang Cao 3 ;

作者机构： 1.Institute of Quality Standards and Testing Technology for Agri-products The Chinese Academy of Agricultural Sciences

2.School of Food Science and Engineering Harbin Institute of Technology

3.Huizhou Exit-Entry Inspection and Quarantine Bureau

关键词： Pesticides;Multi-residue analysis;Coffee;GPC;SPE;GC-MS;Validation

会议名称： International Conference on Bioinformatics and Biomedical Engineering (iCBBE 2010)

主办单位：

页码： 2970-2973

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.

分类号： G202-53

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