Source and Health Risk Assessment of Heavy Metals in Groundwater of Datong Basin

被引：0
作者：
大 同 盆 地 西 南 区 地 下 水 重 金 属 来 源 解 析 及 健 康 风 险评价
机构：
[1] School of Water Resources & Environmental Engineering, East China University of Technology, Nanchang
[2] Jiangxi Coalfield Geological Prospecting Research Institute, Nanchang
来源：
| 2025年 / 46卷 / 01期
关键词：
Datong Basin; groundwater; health risks; heavy metals; source analysis;
D O I：
10.13227/j.hjkx.202312259
中图分类号：
学科分类号：
摘要：
The identification of distribution characteristics,pollution sources,and potential human health risks of heavy metals in groundwater is crucial for the scientific planning and rational development of groundwater resources in arid-semiarid regions. In this study,46 groundwater samples were collected and analyzed using hydrogeochemical modeling and multivariate statistical analysis methods to reveal the pollution characteristics and speciation distribution of 11 heavy metals(As,B,Pb,Sb,Tl,Mn,Ba,Cd,Co,Cr,and Al)in the Datong Basin. The absolute principal component-linear regression(APCS-MLR)model and health risk assessment model(HRA)were employed to determine the sources and health risk levels of heavy metals in groundwater. The results showed that:① As,B,Pb,Sb,and Tl in groundwater exceeded the Class III groundwater quality standards,indicating severe pollution,while Mn showed mild pollution,with heavy metal concentrations generally higher in the central region compared to those in the southern,eastern,and western regions. ② The predominant speciation forms of As,B,Pb,Sb,and Tl were HAsO42-(91.71%),H3BO(3 97.61%),PbCO(3 88.08%),Sb(OH)6-(99.81%),and Tl+(94.84%), respectively,with pH being one of the key factors affecting the distribution of heavy metal species. ③ The main sources of heavy metal pollution were soil migration sources(Co,Cd, and Cr),industrial sources(Al,Pb,Sb,and B),mining sources(Tl and Mn),and natural sources(Ba and As),with industrial sources accounting for the largest proportion (34%),followed by natural sources(29%),mining sources(20%),and soil migration sources(18%). The health risk assessment results for specific sources of heavy metals indicated that industrial activities and natural sources were the main contributors to the carcinogenic risk for adults(54.68%)and children(67.51%),with As posing the highest carcinogenic risk. Mining activities were the major contributor to non-carcinogenic risk(56.69% for adults,56.97% for children),with higher risks associated with Tl and As. © 2025 Science Press. All rights reserved.
引用
收藏
页码：239 / 252
页数：13
相关论文
共 66 条
  • [21] Meng L, Zuo R, Wang J S, Et al., Apportionment and evolution of pollution sources in a typical riverside groundwater resource area using PCA-APCS-MLR model [J], Journal of Contaminant Hydrology, 218, pp. 70-83, (2018)
  • [22] Wu J T, Margenot A J, Wei X, Et al., Source apportionment of soil heavy metals in fluvial islands,Anhui section of the lower Yangtze River:comparison of APCS – MLR and PMF[J], Journal of Soils and Sediments, 20, 9, pp. 3380-3393, (2020)
  • [23] Fu R J, Xin C L, Yu S, Et al., Analysis of heavy metal sources in groundwater and assessment of health risks:an example from the southwest sub-basin of the Shiqi River, Environmental Science, 44, 2, pp. 796-806, (2023)
  • [24] Han Y, Zhang H M, Zhang Y F, Et al., Distribution regularity, origin and quality division of high arsenic,fluorine and iodine contents in groundwater in Datong Basin[J], Geological Survey of China, 4, 1, pp. 57-68, (2017)
  • [25] Liu B L, Ai S W, Zhang W Y, Et al., Assessment of the bioavailability,bioaccessibility and transfer of heavy metals in the soil-grain-human systems near a mining and smelting area in NW China[J], Science of the Total Environment, 609, pp. 822-829, (2017)
  • [26] Yang Y, Guo H M., Analysis of ground water environment´s evolution on Datong basin [J], Geotechnical Engineering Technique, 17, 2, pp. 107-111, (2003)
  • [27] Zhao S L, Liu W J, Sun D Y, Et al., Effect of organic matter on iodine mobilization in groundwater of Datong basin, Earth Science, 48, 12, pp. 4699-4710, (2023)
  • [28] Liang C, Su C L, Wu Y, Et al., Distribution and geochemical processes for the formation of high Fluoride groundwater in Datong basin, Geological Science and Technology Information, 33, 2, pp. 154-159, (2014)
  • [29] Wang Y T, Li J X, Xue X B, Et al., Similarities and differences of main controlling factors of natural high iodine groundwater between North China plain and Datong basin[J], Earth Science, 46, 1, pp. 308-320, (2021)
  • [30] Su C L, Wang Y X., A study of zonality of hydrochemistry of groundwater in unconsolidated sediments in Datong basin, Hydrogeology & Engineering Geology, 35, 1, pp. 83-89, (2008)
1234567