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• W2895983842 abstract "Comparative analysis was performed of changing groundwater quality over ten years (2006–2016) by source apportionment and spatial distribution characteristics. This shallow groundwater in a typical riverside groundwater resource area was studied using principal component analysis (PCA) and factor analysis (FA), coupled with the absolute principal-component-score multiple-linear-regression (APCS-MLR) receptor model. The relationship among land-use types, hydro-chemical composition, and evolution of the quality of groundwater from natural and anthropogenic sources was demonstrated. The results showed that water-rock interaction, agricultural fertilizer, and domestic and industrial wastewater were responsible for the evolution of contamination in the groundwater. The major potential pollution sources that had significant effect on groundwater quality variables were categorized into three groups: heavy metals (iron, manganese), nutrients (ammonia nitrogen, nitrite and nitrates), and organic pollution (chemical oxygen demand). The APCS-MLR model considered the average contribution of each different potential pollution source to these categories separately. The potential pollution sources in the groundwater presented an obvious spatial distribution with an area of high concentration distributed mainly in the western and northwestern areas downstream from the Songhua River. The variation of land use type and evolution of the spatial distribution of the pollution sources in the groundwater showed good consistency. Eventually, PCA /FA coupled with APCS-MLR became a versatile tool for comprehensive source apportionment of groundwater." @default.
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• W2895983842 date "2018-11-01" @default.
• W2895983842 modified "2023-10-15" @default.
• W2895983842 title "Apportionment and evolution of pollution sources in a typical riverside groundwater resource area using PCA-APCS-MLR model" @default.
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• W2895983842 doi "https://doi.org/10.1016/j.jconhyd.2018.10.005" @default.
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