Hydrogeochemistry and quality of surface water and groundwater in the drinking water source area of an urbanizing region

被引：55

作者：

Cao, Xianghui ^{[1
,2
]}

Lu, Yonglong ^{[1
,2
]}

Wang, Chenchen ^{[1
,2
]}

Zhang, Meng ^{[1
,2
]}

Yuan, Jingjing ^{[1
,2
]}

Zhang, Anqi ^{[1
,2
]}

Song, Shuai ^{[1
,2
]}

Baninla, Yvette ^{[1
,2
]}

Khan, Kifayatullah ^{[1
,3
]}

Wang, Yichao ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, 18 Shuangqing Rd, Beijing 100085, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Univ Swat, Dept Environm & Conservat Sci, Swat 19130, Pakistan

来源：

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY | 2019年 / 186卷

基金：

中国国家自然科学基金;

关键词：

Water source area; Physicochemical characteristics; Trace elements; Water quality; Health risk; MULTIVARIATE STATISTICAL EVALUATION; DISSOLVED TRACE-ELEMENTS; HEALTH-RISK ASSESSMENT; HEAVY-METAL POLLUTION; ARSENIC EXPOSURE; DEVELOPMENTAL NEUROTOXICITY; SOURCE IDENTIFICATION; DIETARY-COMPONENTS; YANGTZE-RIVER; CHILDREN;

D O I：

10.1016/j.ecoenv.2019.109628

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The water quality in drinking water source area is essential for human health. Due to rapid urbanization and industrialization, the pollutants, especially trace elements, are continuously discharged into aquatic environment and pose a risk to human health. An extensive investigation was carried out in drinking water source area in highly urbanized Tianjin of China. Long-term monitoring data of the water body was collected on conventional physical and chemical parameters (pH, ions, TOC etc.) and metallic elements (Hg, As Cd, Pb, Co, U etc.) from 2005 to 2017. Our results showed that CaMg-Cl-SO4 and CaMg-HCO3 were the two prominent hydrochemical materials, implying that the pollution of aquatic system was mainly caused by anthropogenic activities and mineral dissolution within terms of drinking water guidelines (national and international standards), the concentrations of arsenic (As) and iron (Fe) were beyond the quality standards. Multivariate statistical approaches were applied to assess the origins of the elements. The results showed that human activities, as well as endogenous release, contributed significantly to appearance of trace elements. A transformation from low-trophic state to high-trophic state was in progress from 2005 to 2017 in Yuqiao reservoir, and most of the water was not heavily polluted by trace elements. The health risk assessment suggested that As had the potential to cause carcinogenic harm to the local residents, with daily dietary ingestion as the most predominant pathway.

引用

页数：9