新冠疫情下武汉典型饮用水水源中DBPs污染特征与风险评估  

Pollution Characteristics and Risk Assessment of DBPs in Typical Drinking Water Sources in Wuhan Under the COVID-19 Pandemic

作　　者：张坤锋 昌盛[1,2] 涂响[1,2] 付青[1,2] 杨光[1,2] 樊月婷 孙兴滨[3] ZHANG Kun-feng;CHANG Sheng;TU Xiang;FU Qing;YANG Guang;FAN Yue-ting;SUN Xing-bin(State Environmental Protection Key Laboratory of Drinking Water Source Protection,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;National Engineering Laboratory for Lake Pollution Control and Ecological Restoration,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;School of Forestry,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]中国环境科学研究院国家环境保护饮用水水源保护地重点实验室,北京100012 [2]中国环境科学研究院湖泊水污染治理与生态修复技术国家工程实验室,北京100012 [3]东北林业大学林学院,哈尔滨150040

出　　处：《环境科学》2022年第2期878-886,共9页Environmental Science

基　　金：中央级公益性科研院所基本科研业务专项(2020-JY-005)。

摘　　要：为了揭示新冠肺炎疫情下武汉典型饮用水水源中消毒副产物(DBPs)的污染特征与风险水平,选取武汉典型饮用水源地26个采样点位,采用N,N-二乙基-1,4-苯二胺分光光度法和气相色谱仪-微池电子捕获检测器(GC-μECD)法分别对水体中残余氯消毒剂和DBPs进行了检测,并开展健康与生态风险评估.结果表明,26个点位中有16个检出了游离氯或总余氯,检出最大浓度为0.04 mg·L^(-1),部分点位游离氯超过了国家地表水标准,靠近城市污水厂排水口的点位浓度相对较高.对10个代表性点位进行了34种DBPs的检测,有24种物质被检出,检出率为10.00%~100.00%;ρ(总DBPs)浓度范围为0.11~104.73μg·L^(-1),平均值为7.26μg·L^(-1).三氯甲烷检出浓度最高,浓度范围为9.98~11.15μg·L^(-1),平均值为10.47μg·L^(-1);一溴一碘乙酰胺检出浓度最低,浓度范围为ND~0.11μg·L^(-1),平均值为0.01μg·L^(-1);研究区域内DBPs总体检出水平较低.健康风险评估结果显示,DBPs不会对人体产生致癌和非致癌健康风险;生态风险评估结果表明,三氯甲烷对水生生物有较高的生态风险.In order to reveal the pollution characteristics and risk levels of DBPs in typical drinking water sources in Wuhan under the COVID-19 pandemic,26 sampling sites were selected in typical drinking water sources in Wuhan.N,N-diethyl^(-)1,4-phenylenediamine spectrophotometry and gas chromatograph-micro-cell electron capture detector(GC-μECD)methods were used to detect residual chlorine disinfectants and DBPs in water,respectively,and their health and ecology risks were assessed.The results showed that free chlorine or total residual chlorine were detected in 16 of the 26 water samples,and the maximum concentration was 0.04 mg·L^(-1),which exceeded the limit of the surface water standard in China.The concentration of residual chlorine was higher in sampling sites near the outfall of a municipal sewage plant.There were 34 types of DBPs measured in 10 sampling sites,and 24 types of substances were detected with the detection rate of 10.00%-100.00%.Theρ(total DBPs)was in the range of 0.11-104.73μg·L^(-1),with an average value of 7.26μg·L^(-1).The concentration of chloroform was the highest among all the DBPs,ranging from 9.98μg·L^(-1) to 11.15μg·L^(-1),with an average value of 10.47μg·L^(-1).The concentration of 2-bromo-2-iodoacetamide was the lowest,ranging from ND-0.11μg·L^(-1),with an average value of 0.01μg·L^(-1).The overall detection level of the DBPs area was low in this study area,and the result of the health risk assessment showed that the DBPs had no carcinogenic or non-carcinogenic health risks to human body.However,the results of the ecological risk assessment showed that chloroform presented a high ecological risk to aquatic organisms.

关 键 词：新冠疫情(COVID-19) 武汉 典型饮用水水源 消毒副产物(DBPs) 风险评估 

分 类 号：X820.4[环境科学与工程—环境工程] TU991.21[建筑科学—市政工程]