顶空气相色谱法测定饮用水中挥发性卤代烃  

Determination of volatile halogenated hydrocarbons in drinking water by headspace gas chromatography

作　　者：周涛[1] 杨叶梅[2] 朱凤鸣[2] 邹学贤[2] 

机构地区：[1]昆明医学院第二附属医院,昆明650101 [2]昆明医学院,昆明650031

出　　处：《中国卫生检验杂志》2005年第3期264-266,共3页Chinese Journal of Health Laboratory Technology

基　　金：云南省应用基础研究基金资助项目(98CO61M)

摘　　要：目的建立饮用水中痕量挥发性卤代烃的分析方法。方法采用顶空气相色谱法测定饮用水中二氯甲烷、三氯甲烷、四氯化碳、三氯乙烯、四氯乙烯及分离溴仿六种挥发性卤代烃。对色谱条件、平衡温度、平衡时间、气液体积比及样品基体进行了实验研究和优化。结果在所建立的最佳实验条件下6种挥发性卤代烃的平均回收率在95 46% ~99 38% 之间,相对标准差(RSD)为3 31% ~7 23%。检测限为0 0246μg/L^1 45μg/L。结论所建立的分析方法灵敏、快速、简便、准确、可同时测定多种挥发性卤代烃。Objective:To set up a practical method for determination of the trace amounts of six volatile halogenated hydrocarbons in drinking water.Methods:Headspace Gas Chromatography was used.Results: Parameters affecting efficiemcy of HSGC procedure,such as the chromatography condition, the equibilium temperature, the equibilium time,the sample matrix and the ratio between the liquid and the gaseous phase were optimized.In the optimum condition,the six volatile halogenated hydrocarbons had been separated successfully. The recoveries of them are between the range of 95.46%~99.38%,the relative standard deviation is between 3.31%~7.23%.The determination limite ismethod is between ~0.0246 μg/L ~~1.45 μg/L .Conclusion:The method is sensitive, accuracy, simple,and these six compounds were analyzed in the same time. [

关 键 词：顶空气相色谱法 饮用水 色谱条件 挥发性卤代烃 RSD 实验研究 三氯乙烯 痕量 四氯乙烯 平衡时间 

分 类 号：R123.1[医药卫生—环境卫生学] X832[医药卫生—公共卫生与预防医学]