首页 | 本学科首页   官方微博 | 高级检索  
     

水中三氯乙醛的吹扫-捕集气相色谱法测定
引用本文:李慧,戴晓莹. 水中三氯乙醛的吹扫-捕集气相色谱法测定[J]. 广东化工, 2012, 39(6): 301+304-301,304
作者姓名:李慧  戴晓莹
作者单位:东莞市东江水务有限公司水质监测站,广东东莞,523000
摘    要:研究了用吹扫-捕集气相色谱法测定自来水中的三氯乙醛含量。水样中的三氯乙醛与碱反应后生成三氯甲烷,三氯甲烷经吹扫-捕集仪富集后,利用DB-5毛细管柱分离后经ECD测定峰面积,利用加碱前后两次测定的峰面积之差来确定三氯乙醛的含量。此方法测定水中三氯乙醛的最低检出限为0.2 g/L,加标回收率为90.6%~96.8%,相对标准偏差(n=6)小于3%。此方法方便快捷,对地表水和自来水中三氯乙醛的有良好的分析效果。

关 键 词:三氯乙醛  吹扫-捕集  水质

Determination of Trichloroacetaldehyde in Water by Gas Chromatography with ECD
Li Hui,Dai Xiaoying. Determination of Trichloroacetaldehyde in Water by Gas Chromatography with ECD[J]. Guangdong Chemical Industry, 2012, 39(6): 301+304-301,304
Authors:Li Hui  Dai Xiaoying
Affiliation:(WATER QUALITY MONITORING STATION,DONGJIANG SHUIWU Co.Ltd.,Dongguan 523000,China)
Abstract:The method for analysis of Trichloroacetaldehyde in water has been developed.Trichloroacetaldehyde in water was concentrated by Purge and Trap Sample Concentrator.It was separated by DB-5 capillary column in GC,and detected by Electrical Conductivity Detector(ECD).The limit of detection(LOD)was 0.2 ?g/L,the mean recoveries were between 90.6 % and 96.8 % with relative standard deviations of below 3 %.The proposed method was simple,rapid and accurate,suited to drinking water,groundwater.
Keywords:trichloroacetaldehyde  purge and trap  water
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号