摘要
利用固相萃取(SPE)/气相色谱火焰光度(GC-FPD)技术建立了葡萄酒中16种有机磷农药残留量分析方法。样品加水稀释,过HLB小柱和LC-NH2小柱净化,浓缩、定容后,用气相色谱测定,外标法定量。各农药的方法定量限(LOQ)均为为0.01 mg/kg。添加回收实验,16种有机磷农药添加浓度为0.01-0.10 mg/kg时,添加回收率为65.3-92.3%,变异系数≤10%。
A solid phase extraction (SPE)/flame photometric detector(GC- FPD ) gas chromatography spectrometry method was developed for 16 organophosphorous pesticide residues in grade wine. The organophosphorous pesticide residues were purified by HLB and LC-NH2,SPE columns, and detected by gas chromatography spectrometry (GC-FPD). The method limit of quantification (LOQ) was 0.01 mg/kg for (Dichlorvos,Ethoprophos,Sulfotep,Phorate,Terbufos ,Monocrotophos,Fonofos, Posfolan-methyl, Phosphamidon, Parathion-methyl, Parathion, Isofenphos-methy, Phosfolan, Fenamiphos, Isazofhos, Coumaphos). Fortified recovery was 65.3-92.3% when the spiked concentration was 0.01-0.10 mg/kg, the coefficient of variation were less than 10%.
出处
《福建分析测试》
CAS
2012年第5期11-16,共6页
Fujian Analysis & Testing
基金
福建省科技厅农业科技重点项目(2012N0028)
关键词
固相萃取
有机磷农药
葡萄酒
气相色谱
solid phase extraction
organophosphorous
grade wine
gas chromatography spectrometry