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[Formation Mechanism and Source Apportionment of Hydrochemical Components in Groundwater in the Yinchuan Plain].

Author information

Affiliations

  • 1. Hydrogeological and Environmental Geological Survey Center of China Geological Survey, Tianjin 300304, China.
      Authors
    • Han SB 1, 2
    • Zhou YZ 1, 3
    • Li FC 1
    (3 authors)
  • 2. School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
      Authors
    • Han SB 1, 2
    • Zheng Y 2
    (2 authors)
  • 3. College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China.
      Authors
    • Zhou YZ 1, 3
    • Zhou JL 3
    (2 authors)
  • 4. China Institute of Geo-Environment Monitoring, Beijing 100081, China.
      Authors
    • Li CQ 4
    (1 author)
  • 5. Investigate of Hydrogeology and Environmental Geology of Ningxia, Yinchuan 750021, China.
      Authors
    • Han QQ 5
    (1 author)

Huan Jing ke Xue= Huanjing Kexue, 01 Aug 2024, 45(8):4577-4588Language:chi
https://doi.org/10.13227/j.hjkx.202308211 PMID: 39168677 

Abstract 

Groundwater is one of the major water sources for production, living, and agricultural irrigation in the Yinchuan Plain. Owing to the influence of the regional environmental background and long-term effects of human activities, groundwater quality is generally inferior. To deeply analyze the formation mechanism and source of hydrochemical components in groundwater in the Yinchuan Plain, the traditional hydrochemical graphic method and mathematical statistics and principal component analysis-multivariate linear statistical model were used. Based on inorganic component contents of 100 phreatic water samples and 46 confined groundwater samples, the hydrochemical characteristics and quality status, spatial distribution of over-limit toxicological components, and contribution rate of hydrochemical components were analyzed. The results showed that the chemical components of groundwater were controlled by rock weathering and evaporation concentration. Dissolution-enrichment （F1）, original geological environment （F2）, and human activities（F3） were the principal factors that influenced groundwater hydrochemistry with the contribution rates of 73.67%, 14.45%, and 11.88%, respectively. The major over-limit toxicity indices in groundwater were NO3--N and F-. High NO3--N phreatic water was mainly influenced by agriculture activities, followed by the discharge of domestic sewage. Enrichment of groundwater F- was mainly caused by leaching of F-bearing minerals and cation exchange adsorption.

Full text links 

Read article at publisher's site: https://doi.org/10.13227/j.hjkx.202308211

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