2018—2023年上海市青浦区水中卤代烃含量分析  

Analysis of the Content of Halogenated Hydrocarbons in Water From 2018 to 2023 in Qingpu District of Shanghai

作　　者：姚新民 陈云 刁永卿 邵杏芳 YAO Xinmin;CHEN Yun;DIAO Yongqing;SHAO Xingfang(Physical and Chemical Laboratory of Qingpu District Center for Disease Control and Prevention,Shanghai 201799,China)

机构地区：[1]青浦区疾病预防控制中心理化科,上海201799

出　　处：《食品安全导刊》2024年第24期111-114,共4页China Food Safety Magazine

基　　金：上海市青浦区卫健委基金(QWJ2022-23)。

摘　　要：目的:了解上海市青浦区水环境质量,为该地区生活饮用水水质管理提供科学依据。方法:监测和统计分析2018—2023年青浦区各类水(水源水、出厂水、管网水和二次供水)中卤代烃含量的变化。结果:除三氯甲烷外,青浦区近5年各类水中其他卤代烃均未检出。三氯甲烷在水源水中未检出,但在出厂水、管网水和二次供水中均有不同程度的检出,其含量在0~0.0302μg·L^(-1),均未出现超标情况。比较不同年份三氯甲烷的检出率发现,在出厂水、管网水和二次供水中,2018—2019年的检出率均显著高于2020—2023年(p<0.05)。对不同年份水中三氯甲烷与常规污染指标的相关性分析发现,高锰酸盐指数(COD_(Mn))与三氯甲烷在各类水中的变化呈现一致的正相关关系,而氨氮、亚硝酸盐氮、硝酸盐氮含量与三氯甲烷含量无明显相关性。结论:2018—2023年各类水中卤代烃的污染水平有下降趋势,COD_(Mn)所代表的有机物对水中氯化消毒副产物的生成有一定影响。Objective:To understand the quality of water environment in Qingpu District of Shanghai,and to provide scientific basis for the management of drinking water quality in this area.Methods:The monitoring and statistical analysis of halogenated hydrocarbons in various types of water(source water,finished water,pipe network water and secondary water supply)in Qingpu District from 2018 to 2023 were carried out.Results:Except for trichloromethane,the other halogenated hydrocarbons were not detected in all kinds of water from 2018 to 2023 in Qingpu District of Shanghai.Trichloromethane was also not detected in source water,but it was detected in different degrees in finished water,pipe network water and secondary water supply.The fluctuation range from 0μg·L^(-1)to 0.0302μg·L^(-1),but there was no excessive situation.The detection rate of trichloromethane in finished water,pipe network water and secondary water supply in 2018 and 2019 was significantly higher than that in 2020 and 2023(p<0.05).The correlation analysis of trichloromethane and conventional pollution indicators in water during different epidemic periods showed that except for the consistent positive correlation between COD_(Mn)and trichloromethane in various types of water,the correlation between ammonia nitrogen,nitrite nitrogen,nitrate nitrogen and chloroform varied in different types of water.Conclusion:Level of halogenated hydrocarbons in various types of water showed a declining trend.The organic pollution represented by COD_(Mn)has a certain influence on the formation of chlorinated disinfection by products in water.

关 键 词：饮用水 卤代烃 三氯甲烷 COD_(Mn) 

分 类 号：R123.1[医药卫生—环境卫生学]