2022
DOI: 10.1016/j.apgeochem.2022.105210
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Chemical composition of groundwater in abandoned coal mines: Evidence of hydrogeochemical evolution

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Cited by 20 publications
(7 citation statements)
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“…Positive Ce anomaly is typically associated with the enrichment in HREEs, whereas negative Ce anomaly suggests LREEs enrichment [ 68 ]. Furthermore, positive Ce anomaly implies the presence of highly soluble Ce(III), whereas negative Ce anomaly suggests Ce(III) oxidation to weakly soluble Ce(IV) and is usually associated with high alkalinity or high pH values [ 6 , 37 ]. Contrarily, Eu is enriched compared with other REEs.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Positive Ce anomaly is typically associated with the enrichment in HREEs, whereas negative Ce anomaly suggests LREEs enrichment [ 68 ]. Furthermore, positive Ce anomaly implies the presence of highly soluble Ce(III), whereas negative Ce anomaly suggests Ce(III) oxidation to weakly soluble Ce(IV) and is usually associated with high alkalinity or high pH values [ 6 , 37 ]. Contrarily, Eu is enriched compared with other REEs.…”
Section: Resultsmentioning
confidence: 99%
“…Depletion or enrichment of an element in relation to its neighboring REE is considered a negative or positive REE anomaly. In this study, Ce, Eu, Tm, and Tb anomalies were calculated using Equations (1)–(4) adapted from the previous literature [ 4 , 37 , 38 ] as follows: where Ce / Ce *, Eu / Eu *, Tm / Tm *, and Tb / Tb * represent Ce, Eu, Tm, and Tb anomalies, respectively, while N stands for the UCC-normalized concentration values of the element.…”
Section: Methodsmentioning
confidence: 99%
“…The influence of human activities includes NO3 -, SO4 2and Cldirectly or indi- The relationship diagrams between Mg 2+ /Na + versus Ca 2+ /Na + and HCO3 -/Na + versus Ca 2+ /Na + were plotted (Fig. 6), through which the sources of dissolved substances in the groundwater can be further determined (Gaillardet et al, 1999;Xiao et al, 2015;Ángel et al, 2019;Irina et al, 2022;Liu et al, 2021a). The values of Mg 2+ /Na + , Ca 2+ /Na + and HCO3 -/Na + in the KGW samples of Sangu Spring Basin were 0.23-9.97, 0.46-28.70 and 0.53-31.55, respectively.…”
Section: Causes Of Groundwatersmentioning
confidence: 99%
“…Feng et al [27] presented a framework and quantitative method for groundwater environmental risk analysis at different phases of the mine life cycle composed of the groundwater system destruction risk and social-economic-ecological vulnerability assessment. Irina et al [28], Azzeddine et al [29], Jiang et al [30], Yang et al [31], Zhang et al [32], and Zhang [33] conducted hydrogeochemical studies to identify the specific features and potentially toxic elements associated with the mining district by assessing the groundwater vulnerability. Patrick and Christopher [34] presented the robustness of 'first-flush' empirical models for describing and predicting mine water behavior.…”
Section: Introductionmentioning
confidence: 99%