摘要
目的:建立了毛细管气相色谱法测定出口小麦粉中21种有机磷残留量的分析方法。方法:小麦粉经ASE溶剂萃取仪,丙酮加正己烷(1+1)溶剂提取,浓缩液丙酮溶解定容,采用HP50+毛细管柱和火焰光度检测器测定,一次进样可对小麦粉中21种有机磷农药进行检测。结果:样品加标平均回收率在74.3%～121.7%之间,相对标准偏差(RSD)2.1%～6.6%之间,检出限(LOD)在0.01 mg/kg～0.05 mg/kg之间。结论:实验结果表明,该法简便、快速、灵敏,准确,各项技术指标均满足农药残留检测的要求,适合出口小麦粉中21种有机磷残留量的日常检验。
Objective：A method for determination of twenty-one kinds organophosphorus residues in export flour by capillary gas chromatography has been developed.Methods：The organophosphorus pesticides were extracted with acetone and Hexanes（1＋1） by accelerated solvent extraction,final concentrate extraction was dissolve in 2.5 ml acetone HP50＋ capillary column and flame photometric detector（FPD） were employed.Determination of thirty kinds of organophosphorus residues in tomato sauce was gained by one injection.Results：The recoveries and relative standard deviations ranged from 71.4% to 120.2% and 2.1% to 6.6% respectively.Limit of detection（LOD） was 0.0170 mg/kg～0.0500 mg/kg.Conclusion：The results showed that the method was simple,rapid,sensitive and accurate,it was suitable for routinely inspect of twenty-one kinds of organophosphorus residues in export flour.
出处
《中国卫生检验杂志》
CAS
2011年第3期601-603,共3页
Chinese Journal of Health Laboratory Technology
关键词
小麦粉
有机磷
残留量
火焰光度检测器
Flour
Organophosphorus
Residues
Flame photometric detector
