固相萃取-气质联用法测定水产品中扑草净  

Determination of Prometryn in Aquatic Products by Solid Phase Extraction-Gas Chromatography Mass Sepectrometry

作　　者：唐秀[1] 范广宇[1] 张云青[1] 孟祥龙[1] 王海涛[1] 徐文科[1] 

机构地区：[1]连云港出入境检验检疫局,江苏连云港222042

出　　处：《食品研究与开发》2016年第19期142-144,共3页Food Research and Development

基　　金：连云港市科技公共服务平台资助项目(JC1404)

摘　　要：建立检测水产品中扑草净残留量的固相萃取-气相色谱质谱联用法。样品用乙腈提取,浓缩后经PSA固相萃取柱净化,由气质联用仪选择离子监测模式下测定。该方法条件下扑草净在2.5μg/L^40μg/L浓度范围内线性良好,对空白样品分别添加2、10、20μg/kg扑草净标准溶液,平均回收率在80%~98%,RSD小于10%,检出限为0.5μg/kg。A method for the determination of prometryn in aquatic products with solid phase extraction-gas chromatography mass sepectrometry（SPE/GC-MS）was established. The prometryn in samples was extracted with acetonitrile,and the supernatant was purified by primary secondary amine（PSA） solid phase column.Then,the analyte was determined in selected ion monitoring of GC-MS. The calibration curves of prometryn showed good linearity in 2.5 μg/L-40 μg/L. The mean recoveries of the prometryn varied from 80 % to 98 %when spiked at 2,10,20 μg/kg,and the relative standard deviations were less than 10 %. The limit of the quantitative was 0.5 μg/kg.

关 键 词：固相萃取 气相色谱-质谱联用仪 水产品 扑草净 

分 类 号：O657.63[理学—分析化学] TS254.7[理学—化学]