吹扫捕集-气相色谱法测定水中四氯苯含量  

Determination of Tetrachlorobenzenes in Water by Purge and Trap-Gas Chromatography

作　　者：刘宁[1] 

机构地区：[1]天津泰达自来水公司,天津300457

出　　处：《现代科学仪器》2012年第3期113-114,共2页Modern Scientific Instruments

摘　　要：建立了吹扫捕集-气相色谱法测定水中四氯苯含量的方法。样品经吹扫捕集解吸处理后进入配有DB-17MS(30m×250μm×0.25μm)毛细管色谱柱的带ECD检测器的气相色谱中进行测定。本法测定四氯苯三种异构体的检出限分别为1,2,3,5-四氯苯:0.008μg/L,1,2,4,5-四氯苯:0.01μg/L,1,2,3,4-四氯苯:0.02μg/L,加标回收率在79.6%～109.3%之间,相对标准偏差为5.3%～8.5%。A determination method of tetrachlorobenzenes in water by purge and trap-gas chromatography is estab- lished.Samples processed by purge and trap adsorption treatment were put in DB-17MS（30m×250μm×0.25μm） capillary column and were detected with GC-ECD.The limits of detection of tetrachlorobenzenes were 1, 2, 3, 5 - tetrachloroben- zene： 0.008μg/L, 1, 2, 4, 5 - tetrachlorobenzene： 0.01μg/L, 1, 2, 3, 4 - tetrachlorobenzene： 0.02μg/L, the recovery rate was 79.6%-109.3%, the relative standard deviation was 5.3%-8.5%.

关 键 词：四氯苯 吹扫捕集 气相色谱法 

分 类 号：X832[环境科学与工程—环境工程] O657.71[理学—分析化学]