Arsenic and fluoride co-enrichment of groundwater in the loess areas and associated human health risks:A case study of Dali County in the Guanzhong Basin  

作　　者：Rui-ping Liu Fei Liu Hua-qing Chen Yu-ting Yang Hua Zhu You-ning Xu Jian-gang Jiao Refaey M El-Wardany 

机构地区：[1]Xi'an Center,China Geological Survey,Ministry of Natural Resources,Xi'an 710054,China [2]Observation and Research Station of Environmental Geology of Typical Mines in Shaanxi Province,MNR,Xi'an 710054,China [3]Key Laboratory for Geo-hazards in Loess Area,MNR,Xi'an 710054,China [4]Dalian Ocean and Fishery Comprehensive Administration Supervision Lochus,Dalian 116000,China [5]Pingliang City Development and Reform Commission,Pingliang 744000,China [6]School of Earth Science and Resources,Chang’an University,Xi'an 710054,China [7]Faculty of Science,Al-Azhar University,Assiut 71524,Egypt

出　　处：《China Geology》2024年第3期445-459,共15页中国地质（英文）

基　　金：funded by the ministry-province cooperation-based pilot project entitled A Technological System for Ecological Remediation Evaluation of Open-Pit Mines initiated by the Ministry of Natural Resources in 2023(2023-03);survey projects of the Land and Resources Investigation Program([2023]06-03-04,1212010634713);a key R&D projects of Shaanxi Province in 2023(2023ZDLSF-63)。

摘　　要：This study aims to reveal the occurrence and origin of typical groundwater with high arsenic and fluoride concentrations in the loess area of the Guanzhong Basin—a Neogene faulted basin.Key findings are as follows:(1)Groundwater samples with high arsenic and fluoride concentrations collected from the loess area and the terraces of the Weihe River accounted for 26%and 30%,respectively,of the total samples,with primary hydrochemical type identified as HCO_(3)-Na.The karst and sand areas exhibit relatively high groundwater quality,serving as preferred sources for water supply.It is recommended that local governments fully harness groundwater in these areas;(2)groundwater with high arsenic and fluoride concentrations in the loess area and the alluvial plain of rivers in Dali County is primarily distributed within the Guanzhong Basin,which represents the drainage zone of groundwater;(3)arsenic and fluoride in groundwater originate principally from natural and anthropogenic sources;(4)the human health risk assessments reveal that long-term intake of groundwater with high arsenic and fluoride concentrations pose cancer or non-cancer risks,which are more serious to kids compared to adults.This study provides a theoretical basis for the prevention and treatment of groundwater with high arsenic and fluoride concentrations in loess areas.

关 键 词：ARSENIC FLUORIDE GROUNDWATER Cancer risk Kid and adult Human health risk assessment Hydrogeological survey engineering Environmental geological survey engineering Loess areas 

分 类 号：X523[环境科学与工程—环境工程] X503.1