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Riverine Hydrochemical Characteristics of a Typical Karst Urban Watershed: Major Ion Compositions, Sources, Assessment, and Historical Evolution

文献类型：期刊论文

作者Han, Ruiyin1,3; Xu, Zhifang1,2,3
刊名ACS EARTH AND SPACE CHEMISTRY
出版日期2022-06-16
卷号6期号:6页码:1495-1505
ISSN号2472-3452
关键词hydrochemical characteristics karst area source identification risk assessment urban watershed
DOI10.1021/acsearthspacechem.2c00002
英文摘要Urban watersheds suffer from great pressure concern-ing poor water carrying capacity in the karst area with a fragile ecology system and urbanization disturbance. The hydrochemistry of karst urban rivers plays a vital role in the maintenance of water ecology. This study determined the sources of major ions (Na+, K+, Mg2+, Ca2+, F-, Cl-, NO3-, SO42-, and HCO3-) in the Nanming urban watershed. The ion concentrations were dominated by the HCO3--Ca2+center dot Mg2+ type and complied with the component characteristics of major ions in karst rivers with the order of Ca2+ (mean: 83.1 mg/L) > Mg2+ (mean: 17.6 mg/L) > Na2+ (mean: 15.2 mg/L) > K+ (mean: 6.7 mg/L) and HCO3- (mean: 252.7 mg/L) > SO42- (mean: 101.5 mg/L) > Cl- (mean: 17.8 mg/L) > NO3- (mean: 17.7 mg/L). The chemical composition of the Nanming River was possibly affected by carbonate weathering (Ca2+, Mg2+, and HCO3-) and anthropogenic inputs (SO42-, NO3-, Cl-, Na+, and K+) through methods of principal component analysis (PCA) and ion ratios. The irrigation water quality and health risk were evaluated by the calculation of sodium adsorption ratio (SAR), soluble sodium percentage (Na%), residual sodium carbonate (RSC), and hazard quotient (HQ) and the comparison of corresponding guidelines. The results showed that the Nanming River was marginally suitable for agricultural irrigation but dangerous for direct drinking intake, and the non-carcinogenic health risk of riverine ions should also be of concern. The control of urban wastewater discharge should be paid more attention to improve the water quality in such an urban watershed.
WOS关键词RARE-EARTH-ELEMENTS ; HUMAN HEALTH-RISK ; SHALLOW GROUNDWATER ; GUIZHOU PROVINCE ; TRACE-ELEMENTS ; XIJIANG RIVER ; CHEMISTRY ; QUALITY ; GEOCHEMISTRY ; CARBON
资助项目National Natural Science Foundation of China[91747202] ; National Natural Science Foundation of China[41730857] ; National Key Research and Development Program of China[2020YFA0607700] ; Chinese Academy of Sciences[XDB26000000]
WOS研究方向Chemistry ; Geochemistry & Geophysics
语种英语
出版者AMER CHEMICAL SOC
WOS记录号WOS:000813433900001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/105897]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Xu, Zhifang
作者单位1.Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Han, Ruiyin,Xu, Zhifang. Riverine Hydrochemical Characteristics of a Typical Karst Urban Watershed: Major Ion Compositions, Sources, Assessment, and Historical Evolution[J]. ACS EARTH AND SPACE CHEMISTRY,2022,6(6):1495-1505.
APA Han, Ruiyin,&Xu, Zhifang.(2022).Riverine Hydrochemical Characteristics of a Typical Karst Urban Watershed: Major Ion Compositions, Sources, Assessment, and Historical Evolution.ACS EARTH AND SPACE CHEMISTRY,6(6),1495-1505.
MLA Han, Ruiyin,et al."Riverine Hydrochemical Characteristics of a Typical Karst Urban Watershed: Major Ion Compositions, Sources, Assessment, and Historical Evolution".ACS EARTH AND SPACE CHEMISTRY 6.6(2022):1495-1505.

入库方式： OAI收割

来源：地质与地球物理研究所

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