Determination of 11 Triazole Pesticides Residues in Fruits and Vegetables by Gas Chromatography-Mass Spectrometry
  
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DOI:10.3969/j.issn.1004-4957.年份.月份
KeyWord:gas chromatography-mass spectrometry(GC-MS)  vegetables  fruits  triazole pesticides
  
AuthorInstitution
葛娜,刘晓茂,李学民,黄学者,吴艳萍,李金,刘永明 秦皇岛出入境检验检疫局
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Abstract:
      A method was developed for the determination of 11 triazole pesticides residues in fruits and vegetables using gas chromatography-mass spectrometry(GC-MS).The samples were homogeneous extracted with acetonitrile and then cleaned up by a solid phase extraction(Sep-Pak CarbonNH2) cartridge,eluted with acetonitrile-toluene(3∶1).The elution solvent was concentrated,solvent exchanged to constant volume,then determined by GC-MSD/SIM with the internal standard method.The calibration curves of 11 triazole pesticides were linear in the range of 0.05-5 ng with correlation coefficients of 0.996-1.000.The spiked recoveries of 11 triazole pesticides from five matrices(e.g.cabbage,tomato,apple,orange,spinach) at three spiked levels of 0.01,0.05,0.10 mg/kg were in the range of 80%-97% with relative standard deviations(RSDs,n=10) of 2.5%-8.4%.The limits of detection were 0.01 mg/kg for 11 triazole pesticides.The method is simple,sensitive,accurate and reliable.
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