柳州市生活饮用水中挥发性卤代烃污染来源及特征分析  

Analysis on sources and characteristics of volatile halogenated hydrocarbon pollution in drinking water in Liuzhou City

作　　者：叶绍燕 冯莲[2] 冯看[2] 顾小利 李德洁[2] 赵琳 YE Shao-yan;FENG Lian;FENG Kan;GU Xiao-li;LI De-jie;ZHAO Li(Environmental and School Hygiene Prevention Institute,Centre for Disease Control and Prevention of Liuzhou,Liuzhou Guangxi,545007,China;Physical and Chemical Inspection Institute,Centre for Disease Control and Prevention of Liuzhou,Liuzhou Guangxi,545007,China;Occupational and Radiological Hygiene Prevention Institute,Centre for Disease Control and Prevention of Liuzhou,Liuzhou Guangxi,545007,China;Public Health Unit,Centre for Disease Control and Prevention of Liunan District,Liuzhou Guangxi,545007,China)

机构地区：[1]柳州市疾病预防控制中心环境与学校卫生防制所,广西柳州545007 [2]柳州市疾病预防控制中心理化检验所,广西柳州545007 [3]柳州市疾病预防控制中心职业与放射卫生防制所,广西柳州545007 [4]柳州市柳南区疾病预防控制中心公卫股,广西柳州545007

出　　处：《职业与健康》2020年第22期3115-3118,共4页Occupation and Health

基　　金：广西壮族自治区卫生和计划生育委员会自筹经费科研课题(Z20180263)。

摘　　要：目的了解柳州市生活饮用水中挥发性卤代烃污染情况,为柳州市生活饮用水安全性评估及相关污染防控提供科学数据。方法采用吹扫捕集-气相色谱法检测2018—2019年柳州市生活饮用水中19种挥发性卤代烃的含量,分析水中挥发性卤代烃污染来源和特征,对比分析不同水期生活饮用水中挥发性卤代烃种类、含量的变化。结果柳州市生活饮用水水源水中未检出挥发性卤代烃,其他水样均不同程度检出三氯甲烷等10种挥发性卤代烃,检出率均为100%;同1份水样可同时检出2种及以上挥发性卤代烃,检出的挥发性卤代烃以三氯甲烷、一溴二氯甲烷、二溴一氯甲烷为主;末梢水中一溴二氯甲烷检出率为100%;二次供水中三氯甲烷、一溴二氯甲烷检出率均为100%;1,1-二氯乙烯等9种挥发性卤代烃均未检出。水中主要挥发性卤代烃平均浓度在丰水期和枯水期变化较大,丰水期三氯甲烷浓度大于枯水期,枯水期二溴一氯甲烷浓度大于丰水期,差异有统计学意义(P<0.05)。结论柳州市生活饮用水检出挥发性卤代烃污染以三氯甲烷、一溴二氯甲烷和二溴一氯甲烷为主,饮用水中的挥发性卤代烃主要来源于水消毒过程,19种挥发性卤代烃的检测结果均符合国家标准。Objective To investigate the pollution status of volatile halohydrocarbons in drinking water in Liuzhou City,provide scientific data for the safety assessment and related pollution prevention and control of drinking water in Liuzhou City.Methods Purge and trap-gas chromatography was used to detect the contents of 19 volatile halogenated hydrocarbons in domestic drinking water in Liuzhou City from 2018-2019. The sources and characteristics of volatile halogenated hydrocarbon pollution in water were analyzed. Changes in types and contents of volatile halogenated hydrocarbons in water in different water periods were compared and analyzed. Results No volatile halogenated hydrocarbons were detected in the drinking water source of Liuzhou City,and other water samples were detected in varying degrees with ten kinds of volatile halogenated hydrocarbons such as chloroform,which detection rates were 100%. Two or more volatile halogenated hydrocarbons were detected in one water sample at the same time,which were mainly chloroform,monobromodichloromethane and dibromomonochloromethane. The detection rate of monobromodichloromethane in the peripheral water was 100%. The detection rates of chloroform and monobro-modichloromethane in the secondary water supply were all 100%. Nine kinds of volatile halogenated hydrocarbons such as 1,1-dichloroethylene were not detected. The average concentration of the main volatile halogenated hydrocarbons in water varied greatly during the wet season and the dry season. The concentration of chloroform in the wet season was greater than that in the dry season,while the concentration of dibromochloromethane in the dry season was greater than that in the wet season,and the differences were statistically significant(P<0.05). Conclusion The pollution of volatile halogenated hydrocarbon s detected in domestic drinking water in Liuzhou is mainly chloroform,monobromodichloromethane and dibromochloromethane. The volatile halogenated hydrocarbons in drinking water mainly come from the process of water di

关 键 词：生活饮用水 挥发性卤代烃 污染来源 特征分析 

分 类 号：R123.1[医药卫生—环境卫生学]