2014年贵州省丰水期市政水厂出厂水中三氯甲烷、四氯化碳监测结果分析  

Analysis on monitoring results of trichloromethane and carbon tetrachloride in municipal product water in Guizhou province during rain season in 2014

作　　者：李雪春[1] 张卫国[1] 林野[1] 

机构地区：[1]贵州省疾病预防控制中心,贵州贵阳550004

出　　处：《中国卫生检验杂志》2015年第9期1426-1428,1431,共4页Chinese Journal of Health Laboratory Technology

摘　　要：目的通过监测贵州省县级以上市政水厂丰水期出厂水中三氯甲烷、四氯化碳的浓度,分析可能存在的污染来源,并探讨其防控措施。方法按《生活饮用水标准检验方法》(GB/T 5750.8—2006)毛细管柱气相色谱法对样品进行分析。结果贵州省丰水期市政水厂出厂水中三氯甲烷的浓度为0.000 1 mg/L^0.096 3 mg/L,平均浓度为0.013 4 mg/L,合格率为97.9%;四氯化碳的浓度为0.000 05 mg/L^0.001 5 mg/L,平均浓度为0.000 07 mg/L,合格率为100.0%。经液氯消毒后,出厂水中三氯甲烷的浓度为0.013 6 mg/L^0.074 9 mg/L,中位数为0.038 1 mg/L;经二氧化氯消毒后,出厂水中三氯甲烷的浓度为0.000 1 mg/L^0.017 1 mg/L,中位数为0.007 2 mg/L;两者比较,差异有统计学意义(P<0.01)。结论贵州省市政水厂出厂水中三氯甲烷存在超标现象,提示生产部门和监管部门应加强加氯消毒过程中的质量控制和管理工作。Objective To analysis of the concentration of trichloromethane and carbon tetrachloride and analyze the possible pollution source and try to find the preventive and control measure, by monitoring results of the municipal product water during rain season at or above the county level of Guizhou province. Methods The samples were measured according with the gas chromatography method with capillary column of the standard examination methods for drinking water （GB/T 5750.8--2006）. Results The range of the concentration of trichloromethane in the municipal product water during rain season in Guizhou province was 0. 000 1 mg/L-0.096 3 mg/L. The trichloromethane average value was 0. 013 4 mg/L. The triehloromethane qualification rate was 97.9%. The range of the concentration of carbon tetrachloride was 0.000 05 mg/L - 0.001 5 mg/L. The carbon tetra- chloride average value was 0. 000 07 mg/L. The carbon tetrachloride qualification rate was 100.0%. The range （0.013 6 mg/L - 0.074 9 mg/L, median 0.038 1 rag/L） of the concentration of trichloromethane in the product water by chlorination and the range（0. 000 1 mg/L-0. 017 1 mg/L,median 0. 007 2 mg/L） by chlorine dioxide were statistically significant （P 〈0.01 ）. Conclusion The results of trichloromethane in the municipal product water in Guizhou province existed superscalar phenomenon, that prompted that producers and government ought to strengthen the quality control and management in the process of disinfection by chlorination.

关 键 词：三氯甲烷 四氯化碳 出厂水 监测 

分 类 号：R123.1[医药卫生—环境卫生学]