Identification of the dominant hydrogeochemical processes and characterization of potential contaminants in groundwater in Qingyuan, China, by multivariate statistical analysis.

RSC Adv · 2018 · PMC9086470 · PMID 35548109

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Most groundwater samples, except the hand-pump well water samples, showed a trend toward excess Ca 2+ (Ca 2+ > SO 4 2− ) above the 2 : 1 line in the Ca 2+ versus SO 4 2− plot, and a strong, significant linear relationship following a 1 : 1 ratio in the (Ca 2+ + Mg 2+ ) versus (HCO 3 − + SO 4 2− ) plot ( Fig. 8a and b ).

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