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Open AccessArticle

Hydrogeochemical Characteristics and Groundwater Quality Evaluation Based on Multivariate Statistical Analysis

by 1,2,3,4, 1,2,3,4, 1,2,3,4 and 1,2,3,4,*
1
Key Laboratory of Groundwater Resources and Environment, Ministry of Education, No. 2519, Jiefang Road, Changchun 130021, China
2
National-Local Joint Engineering Laboratory of In-situ Conversion, Drilling and Exploitation Technology for Oil Shale, No. 2519, Jiefang Road, Changchun 130021, China
3
College of New Energy and Environment, Jilin University, No. 2519, Jiefang Road, Changchun 130021, China
4
Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, No. 2519, Jiefang Road, Changchun 130021, China
*
Author to whom correspondence should be addressed.
Water 2020, 12(10), 2792; https://doi.org/10.3390/w12102792
Received: 21 August 2020 / Revised: 21 September 2020 / Accepted: 3 October 2020 / Published: 8 October 2020
(This article belongs to the Section Hydrology and Hydrogeology)
Hydrogeochemical research and water quality evaluation are an important part of groundwater development and management projects in Dehui City, Jilin Province, China. We collected 217 groundwater samples in the study area and used two multivariate statistical methods, hierarchical cluster analysis and principal component analysis to classify groundwater; combined graphical method, piper diagram, and Gibbs diagram to characterize groundwater chemical types and distinguish the water chemical control mechanism; and fuzzy comprehensive evaluation method to evaluate groundwater quality. Three major categories have been identified. Most of the groundwater in the study area is Ca-HCO3 type water. The water chemistry control mechanism is determined to be based on water-rock interaction and less evaporation. From east to west in the study area, the total dissolved solids (TDS) gradually increased, and water quality gradually deteriorated. In the whole region, 79.26% of the groundwater is suitable for drinking. With Yinma River at the boundary, the water quality in the eastern part is excellent, while that in the southwest is poor. After appropriate treatment, it can be used in industry and agriculture. The excess NO3 is mainly affected by human activities. The unique geological conditions of the Songnen Plain result in an excess amount of Fe3+ and Mn2+ in some areas. This study determined the chemical characteristics of groundwater in the study area and distinguished water quality levels. The results will be helpful for the development and management of groundwater resources. View Full-Text
Keywords: hierarchical cluster analysis; principal component analysis; fuzzy comprehensive evaluation; hydrogeochemistry; groundwater quality evaluation hierarchical cluster analysis; principal component analysis; fuzzy comprehensive evaluation; hydrogeochemistry; groundwater quality evaluation
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Chai, Y.; Xiao, C.; Li, M.; Liang, X. Hydrogeochemical Characteristics and Groundwater Quality Evaluation Based on Multivariate Statistical Analysis. Water 2020, 12, 2792.

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