Health risk assessment of heavy metal pollution in groundwater of a karst basin,SW China  

作　　者：Fu-ning Lan Yi Zhao Jun Li Xiu-qun Zhu 

机构地区：[1]Karst Ecosystem,National Observation and Research Station,Pingguo 531406,Guangxi,China [2]Institute of Karst Geology,International Research Centre on Karst,Under the Auspices of UNESCO,Guangxi Karst Resources and Environment Research Center of Engineering Technology,Chinese Academy of Geological Sciences,Karst Dynamics Laboratory,MNR and Guangxi,Guilin 541004,China [3]Hebei Key Laboratory of Water Quality Engineering and Comprehensive Utilization of Water Resources,Hebei University of Architecture,Zhangjiakou 075000,Hebei Province,China [4]College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China

出　　处：《Journal of Groundwater Science and Engineering》2024年第1期49-61,共13页地下水科学与工程（英文版）

基　　金：supported from the National Key Research and Development Program of China(No.2022YFF1302901);the Key Laboratory Construction Project of Guangxi(No.19-185-7);the Foundation for Hebei Education Department(No.2022QNJS05).

摘　　要：To investigate the presence of metal elements and assess their health risk for the populace in the Nandong Underground River Basin(NURB),we conducted an analysis of eleven common heavy metals in the water body.A Health risk assessment(HRA)model was employed to analyze 84 water samples from the NURB.The detection results revealed the following order of heavy metals concentrations:Fe>Al>Mn>Zn>As>Cd>Pb>Cr>Ni>Cu>Hg.Correlation analysis indicated a certain similarity in material source and migration transformation among these eleven metal elements.Our study identified that the health risks for local residents exposed to metal elements in the water of NURB primarily stem from carcinogenic risk(10^(−6)–10^(−4)a^(−1))through the drinking water pathway.Moreover,the health risk of heavy metal exposure for children through drinking water was notably higher than for adults.The maximum health risks of Cr in both underground and surface water exceeded the recommendation standard(5.0×10^(−5)a^(−1))from ICRP,surpassing the values recommended by the Swedish Environmental Protection Agency,the Dutch Ministry of Construction and Environment and the British Royal Society(5.0×10^(−6)a^(−1)).The results of the health risk assessment indicate that Cr in the water of NURB is the primary source of carcinogenic risk for local residents,followed by Cd and As.Consequently,it is imperative to control these three carcinogenic metals when the water was used as drinking water resource.

关 键 词：Water Pollution Correlation Analysis Toxicity of Heavy Metal Elements Underground River Basin Carcinogenicity Potential 

分 类 号：X523[环境科学与工程—环境工程] P641[天文地球—地质矿产勘探]