Increase in fluoride concentration in mine water in Shendong mining area, Northwest China: Insights from isotopic and geochemical signatures
Mine water poses severe threats to the quality of the water supply and ecological environment of the Shendong mining areas owing to its excessive fluoride (F-) content. However, the geochemical behaviours and enrichment mechanisms responsible for F⁻ enrichment during mining activities are not fully...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-05-01
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| Series: | Ecotoxicology and Environmental Safety |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651322003360 |
| _version_ | 1828850369589936128 |
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| author | Chunming Hao Ximeng Sun Bing Xie Shuanglin Hou |
| author_facet | Chunming Hao Ximeng Sun Bing Xie Shuanglin Hou |
| author_sort | Chunming Hao |
| collection | DOAJ |
| description | Mine water poses severe threats to the quality of the water supply and ecological environment of the Shendong mining areas owing to its excessive fluoride (F-) content. However, the geochemical behaviours and enrichment mechanisms responsible for F⁻ enrichment during mining activities are not fully understood. In total, 18 Yanan groundwater and 45 mine water samples were collected to analyse the spatial distribution, hydrogeochemical behaviours, and formation mechanisms related to elevated F- levels by analysing the stable isotopes and water-rock interactions. In this study, F- concentrations in mine water samples varied from 0.16 to 12.75 mg/L, with a mean value of 6.10 mg/L, and 77.78% of the mine water samples had a concentration that exceeded China’s national standards (1.00 mg/L) for drinking water. The F- concentration was markedly high in the mine water samples, with the mean F- concentration being 1.58 times of that in the Yanan groundwater samples. The results of stable isotopes (18OH2O, D, 34SSO4, and 18OSO4) and water-rock interaction analyses suggested that cation exchange and competitive effects were the dominant factors responsible for elevated F- concentration in mine water during mining activities. Thus, the weathering of F-bearing minerals, agriculture, and domestic activities do not play a significant role in the secondary enrichment of F- concentration. |
| first_indexed | 2024-12-12T23:10:36Z |
| format | Article |
| id | doaj.art-9cc53889557247d99cf756a61c232574 |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-12-12T23:10:36Z |
| publishDate | 2022-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-9cc53889557247d99cf756a61c2325742022-12-22T00:08:36ZengElsevierEcotoxicology and Environmental Safety0147-65132022-05-01236113496Increase in fluoride concentration in mine water in Shendong mining area, Northwest China: Insights from isotopic and geochemical signaturesChunming Hao0Ximeng Sun1Bing Xie2Shuanglin Hou3North China Institute of Science and Technology, Hebei 065201, PR China; State Key Laboratory of Groundwater Protection and Utilization by Coal Mining, Beijing 100011, PR ChinaNorth China Institute of Science and Technology, Hebei 065201, PR ChinaNorth China Institute of Science and Technology, Hebei 065201, PR ChinaHebei Key Laboratory of geological resources and environment monitoring and protection, Hebei 050011, PR China; Hebei Geo-Environment Monitoring, Hebei 050011, PR China; Correspondence to: Xingyuan Street 58, Hebei, Shijiazhuang 050021, PR China.Mine water poses severe threats to the quality of the water supply and ecological environment of the Shendong mining areas owing to its excessive fluoride (F-) content. However, the geochemical behaviours and enrichment mechanisms responsible for F⁻ enrichment during mining activities are not fully understood. In total, 18 Yanan groundwater and 45 mine water samples were collected to analyse the spatial distribution, hydrogeochemical behaviours, and formation mechanisms related to elevated F- levels by analysing the stable isotopes and water-rock interactions. In this study, F- concentrations in mine water samples varied from 0.16 to 12.75 mg/L, with a mean value of 6.10 mg/L, and 77.78% of the mine water samples had a concentration that exceeded China’s national standards (1.00 mg/L) for drinking water. The F- concentration was markedly high in the mine water samples, with the mean F- concentration being 1.58 times of that in the Yanan groundwater samples. The results of stable isotopes (18OH2O, D, 34SSO4, and 18OSO4) and water-rock interaction analyses suggested that cation exchange and competitive effects were the dominant factors responsible for elevated F- concentration in mine water during mining activities. Thus, the weathering of F-bearing minerals, agriculture, and domestic activities do not play a significant role in the secondary enrichment of F- concentration.http://www.sciencedirect.com/science/article/pii/S0147651322003360FluorideIsotopesMining activitiesIon exchangeCompetitive effect |
| spellingShingle | Chunming Hao Ximeng Sun Bing Xie Shuanglin Hou Increase in fluoride concentration in mine water in Shendong mining area, Northwest China: Insights from isotopic and geochemical signatures Ecotoxicology and Environmental Safety Fluoride Isotopes Mining activities Ion exchange Competitive effect |
| title | Increase in fluoride concentration in mine water in Shendong mining area, Northwest China: Insights from isotopic and geochemical signatures |
| title_full | Increase in fluoride concentration in mine water in Shendong mining area, Northwest China: Insights from isotopic and geochemical signatures |
| title_fullStr | Increase in fluoride concentration in mine water in Shendong mining area, Northwest China: Insights from isotopic and geochemical signatures |
| title_full_unstemmed | Increase in fluoride concentration in mine water in Shendong mining area, Northwest China: Insights from isotopic and geochemical signatures |
| title_short | Increase in fluoride concentration in mine water in Shendong mining area, Northwest China: Insights from isotopic and geochemical signatures |
| title_sort | increase in fluoride concentration in mine water in shendong mining area northwest china insights from isotopic and geochemical signatures |
| topic | Fluoride Isotopes Mining activities Ion exchange Competitive effect |
| url | http://www.sciencedirect.com/science/article/pii/S0147651322003360 |
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