摘要
目的：通过对样品前处理方法的研究比较,建立贝类产品中溴氰菊酯残留量的气相色谱检测方法。方法：样品用乙腈提取,石油醚去除脂肪等杂质,Florisil硅土柱净化,V（乙酸乙酯）：V（石油醚）=1：4洗脱,浓缩后经气相色谱-电子捕获检测器（GC-ECD）检测,外标法定量。结果：利用该方法,能有效去除杂质、色素,平均回收率为78.0%～95.2%,相对标准偏差（RSD）为5.32%～10.44%,最低检测限为0.5μg/kg。结论：该方法操作简便,灵敏度高,重现性好,能满足贝类中溴氰菊酯低残留检测的要求。
Objective：To develop a method for the determination of the residues of deltamethrin.Methods：Samples were extracted with acetonitrile,defatted with petroleum ether,purified by silica column and determined by gas chromatography and electron capture detection.Results：With external standard method,the recoreries of standard addition levels were 78.0%~95.2%.The relative standard deviations were all below 10.44%.The limit of detection was 0.5 μg/kg.Conclusion：This method is simple,reliable and can be applied in the detection of deltamethrin in cultured shellfish.
出处
《中国卫生检验杂志》
CAS
2008年第2期270-271,共2页
Chinese Journal of Health Laboratory Technology
