摘要
建立了气相色谱法同时测定干辣椒样品中11种农药残留量的检测方法，样品采用丙酮提取，正己烷液液萃取结合硅胶60SPE柱净化，以气相色谱仪-电子捕获检测器检测，外标法定量。各组分的浓度在0．005～1．0μg/mL范围内具有良好的线性，线性相关系数不低于0．9985，方法的定量限为0．02mg／kg，回收率为70．2％-104．4％，测定结果的相对标准偏差为2．34％～7．42％（n=6）。
Gas chromatography method was developed for determination of 11 pesticides residues in chilli. The samples were extracted by acetone, cleaned by liquid - liquid extraction combined gel silica 60 SPE column, detected by GC - ECD. The experimental results showed that the linear range of ! 1 pesticides was 0.005 - 1.0 ~g/mL, correlative coefficients were not less than 0. 998 5. The limit of quantitation was 0.02 mg/kg. The average recoveries were 70.2% - 104.4%. The relative standard deviation of detection results was 2.34%- - 7.42% （ n = 6）.
出处
《化学分析计量》
CAS
2011年第3期50-52,共3页
Chemical Analysis And Meterage
关键词
干辣椒
农药残留
气相色谱法
检测
dry chilli, pesticide residue, GC- ECD, determination
