Hydrochemistry appraisal, quality assessment and health risk evaluation of shallow groundwater in the Mianyang area of Sichuan Basin, southwestern China

被引：73

作者：

Zhang, Yunhui ^{[1
]}

He, Zhihao ^{[2
]}

Tian, Haohao ^{[3
]}

Huang, Xun ^{[1
]}

Zhang, Zhixiong ^{[4
]}

Liu, Yang ^{[4
]}

Xiao, Yong ^{[1
]}

Li, Rui ^{[1
]}

机构：

[1] Southwest Jiaotong Univ, Fac Geosci & Environm Engn, Chengdu 611756, Peoples R China

[2] Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Coll Environm & Civil Engn, Chengdu 610059, Peoples R China

[3] Sino Shaanxi Nucl Ecol Environm Co Ltd, Xian 712000, Peoples R China

[4] Chongqing Survey Inst, Chongqing 401121, Peoples R China

来源：

ENVIRONMENTAL EARTH SCIENCES | 2021年 / 80卷 / 17期

关键词：

Groundwater; Hydrochemistry; Entropy-weighted water quality index; Health risk assessment; Mianyang area; WATER-QUALITY; CHEMISTRY; RESOURCES; POLLUTION; AQUIFERS;

D O I：

10.1007/s12665-021-09894-y

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Sixty groundwater samples were collected from the Mianyang area in Sichuan Basin for hydrogeochemical analysis, quality assessment, and human health risk evaluation. Principal component analysis (PCA), ratios of major ions and geochemical modelling were used to investigate the factors regulating the hydrogeochemical compositions. Groundwater samples were of Ca-HCO3 type and the average cation and anion concentrations were in the order of Ca2+ > Na+ > Mg2+ > K+ and HCO3- > SO42- > Cl- > NO3- > F-. The hydrogeochemical compositions were dominated by calcite dissolution, silicate dissolution, and ion exchange. NO3- contamination was identified and attributed to anthropogenic activities. 65% (39) of the water samples were suitable for human consumption based on the entropy-weighted water quality index (EWQI). The human health risk was evaluated by the US Environmental Protection Agency (USEPA) mathematical model. The hazard quotient of nitrate (HQ(Nitrate)) and total non-carcinogenic health risk (HITotal) values contended that non-carcinogenic health risk was greater in infants as compared to children and adults. Therefore, appropriate remediation for decreasing nitrate concentration in drinking water was recommended to prevent further health risk. This research can provide references to ensure groundwater security and realize effective management of groundwater in the Mianyang area and other similar regions worldwide.

引用

页数：16

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