Accumulation and re-release of metallic pollutants during drinking water distribution and health risk assessment

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Accumulation and re-release of metallic pollutants during drinking water distribution and health risk assessment
	Liu, Quanli ; Gao, Jiali ; Li, Guiwei ; Tao, Hui ; Shi, Baoyou
刊名	ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
	2019-08-01
卷号	5 期号:8 页码:1371-1379
ISSN号	2053-1400
英文摘要	Heavy metals easily accumulate and re-release in drinking water distribution systems (DWDS), which greatly affects the safety of drinking water. The changes in eight metals (Al, Fe, Mn, Zn, Cu, Ba, Cr, and As) were investigated from the finished water (water treated by a drinking water treatment process before entering the distribution process) to the tap water of 10 water treatment plants in 5 cities of eastern China. The water quality of tap water was evaluated by measuring the metallic and non-metallic parameters. Correlation and principal component analysis (PCA) were used to reveal links among studied metals and identify the possible sources of metals. To assess the human risks associated with drinking water, the HQ (hazard quotient) values for single elements and HI (hazard index) were used. The metal concentration in the tap water was mostly higher than that in the finished water and almost no samples remained constant with finished water, indicating that the water quality could deteriorate during drinking water distribution in the studied areas. Both the HQ values and HI values for all studied elements were far below 1, indicating that there were negligible non-carcinogenic risks for inhabitants (adults and children) due to water intake. Carcinogenic risk values showed that the As concentration in the studied areas was up to 1.94 x 10(-4) and this value was higher than 1 x 10(-4). Trace amounts of As could accumulate in DWDS. There were obvious variations in the heavy metals between finished water and tap water, and the accumulation and re-release effects of metals in DWDS could not be ignored.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43418]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Yanshan Univ, Qinhuangdao 066004, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Liu, Quanli,Gao, Jiali,Li, Guiwei,et al. Accumulation and re-release of metallic pollutants during drinking water distribution and health risk assessment[J]. ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY,2019,5(8):1371-1379.
APA	Liu, Quanli,Gao, Jiali,Li, Guiwei,Tao, Hui,&Shi, Baoyou.(2019).Accumulation and re-release of metallic pollutants during drinking water distribution and health risk assessment.ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY,5(8),1371-1379.
MLA	Liu, Quanli,et al."Accumulation and re-release of metallic pollutants during drinking water distribution and health risk assessment".ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY 5.8(2019):1371-1379.