title: [Determination of 44 organophosphorus pesticides in food by SPE disk extraction-capillary gas chromatography with pulsed flame photometric detection].
abstract: OBJECTIVE
  To develop a method for the simultaneous determination of 44 organophosphorus pesticides in food by SPE disk extraction-capillary gas chromatography with pulsed flame photometric detection.
  
  
  METHODS
  Organophosphorus pesticides in food were extracted ultrasonically with water. Then the extract was cleaned-up with SPE disk and eluted with ethyl acetate. Finally the eluent was condensed to 1mL under N2 at 55 degrees C. Gas chromatography was applied for quantitative detection of the organophosphorus pesticides in the sample.
  
  
  RESULTS
  The linear range of the method for all the pesticides were in the range of 0.01-0.5 mg/kg with correlation coefficients of 0.992-1.000. The detection limits of the method were in the range of 0.0005-0.01 mg/kg. The recoveries for most pesticides were 60%-120% with relative standard deviations of less than 15%.
  
  
  CONCLUSIONS
  The method is simple, sensitive, environmentally friendly and suitable for the determination of organophosphorous pesticides in food.
authors.affiliation: Department of Sanitary Technology, West China School of Public Health, Sichuan University, Chengdu 610041, China.
authors.forename: Xiao-Fei
authors.initials: XF
authors.lastname: Luo
authors.forename: Yuan
authors.initials: Y
authors.lastname: Yang
authors.forename: Cheng-Jun
authors.initials: CJ
authors.lastname: Sun
mesh_terms: D002849:Chromatography, Gas / Q000379:methods; D005410:Flame Ionization / Q000379:methods; D005506:Food Contamination / Q000032:analysis*; D009943:Organophosphorus Compounds / Q000032:analysis*; D012275:Oryza / Q000737:chemistry; D010573:Pesticide Residues / Q000032:analysis*; D010783:Photometry / Q000379:methods; D052616:Solid Phase Extraction / Q000379:methods; D014908:Triticum / Q000737:chemistry
chemical_list: D009943:Organophosphorus Compounds; D010573:Pesticide Residues