固相微萃取-气相色谱-电子捕获快速富集检测海水中的有机氯农药  

Rapid Determination of Organic Chlorinated Pesticides in Seawater by SPME-GC-ECD

作　　者：肖俊峰[1] 郭荣波[1] 陈吉平[1] 梁鑫淼[1] 

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116012

出　　处：《分析测试学报》2005年第4期70-73,共4页Journal of Instrumental Analysis

摘　　要：建立了固相微萃取(SPME)技术结合气相色谱-电子捕获(GC-ECD)检测方法,对大连近海养殖区内海水中的痕量12种有机氯农药进行检测,以便对该水域中海产品的食品安全性进行评估.该法具有较好的线性(相关系数为0.98～0.99),检出限达0.2～7ng/L,定量下限为0.66～23 ng/L,重复测定的相对标准偏差小于10%(n=3),回收率为68%～133%.对影响SPME的参数和海水中存在的基质干扰进行探讨.A method for the determination of12trace-level organic chlorinated pesticides in the seawater of Dalian off shore culturing area by SPME-GC-ECD was developed,and the safety for the seafoods in this area was also evaluated.The operation parameters of SPME were optimized,and the matrixeffects in the sea-water were discussed.The linearity in the detecting range is good(0.98-0.99)with the detection limits of0.2-7ng/L,and the quantification limits of0.66-23ng/L.The RSDs were lower than10%,and the re-coveries were68%-133%.It is proved to be simple,fast and accurate for analyzing the organic chlorinated pesticides in seawater.

关 键 词：固相微萃取 食品安全 气相色谱-电子捕获 海水样品 

分 类 号：O657.71[理学—分析化学] S482.32[理学—化学]