Perchlorate occurrence, sub-basin contribution and risk hotspots for drinking water sources in China based on industrial agglomeration method. (January 2022)

• Record Type: Journal Article
• Authors: Zhang, Bin; An, Wei; Shi, Yali; Yang, Min
• Is Part Of: Environment international. Volume 158(2022)
• Publication Date: 2022-01
• Subjects: Perchlorate -- Drinking water sources -- Sub-basin contribution -- Risk hotspots -- Industrial agglomeration; Environmental protection -- Periodicals; Environmental health -- Periodicals; Environmental monitoring -- Periodicals; Environmental Monitoring -- Periodicals; Environnement -- Protection -- Périodiques; Hygiène du milieu -- Périodiques; Environnement -- Surveillance -- Périodiques; Environmental health; Environmental monitoring; Environmental protection; Periodicals; 333.705
• DOI: 10.1016/j.envint.2021.106995
• Languages: English
• ISSNs: 0160-4120

Abstract

Graphical abstract: Highlights: Large-scale perchlorate investigation covers the most river basins of China. The highest average concentration of perchlorate was found in the Yangtze River Basin. Fireworks and explosives production are major sources of perchlorate contamination. Drawing the risk map of perchlorate contamination in surface water in China. Abstract: Perchlorate is a persistent inorganic contaminant which has attracted wide attention because of its harmful effects on physical health. Despite the potential adverse effects to humans via drinking water, related research at the national scale in China are scarce. In this study, the occurrence of perchlorate in major river basins in China was investigated from 2009 to 2020. Generally, except for the Yangtze River Basin, perchlorate concentrations in the surface water of other river basins were low, ranging from < 0.01 to 8.53 μg/L. The results of a specialized field sampling and tracking program in the Yangtze River Basin in 2019 showed that the Xiangjiang River basin is the greatest contributor of perchlorate in the Yangtze River Basin, accounting for 58.63% of the total perchlorate input. Furthermore, based on correlation analysis between production enterprise information and measured concentrations in sampled sites, fireworks and explosives production industries were identified as the major sources of perchlorate contamination in surface water. The risk map showed that the central-southern part of China and the central part of Xinjiang province were risk hotspots for perchlorate contamination. The results gave insights into how to conduct more precise risk assessment and policy intervention towards prevention of perchlorate contamination.