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Arsenic-enriched gr...
Arsenic-enriched groundwaters of India, Bangladesh and Taiwan-Comparison of hydrochemical characteristics and mobility constraints
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Maity, Jyoti Prakash (författare)
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Nath, Bibhash (författare)
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Chen, Chien-Yen (författare)
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- Bhattacharya, Prosun (författare)
- KTH,Miljögeokemi och ekoteknik
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Sracek, Ondra (författare)
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- Bundschuh, Jochen (författare)
- KTH,Mark- och vattenteknik
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Kar, Sandeep (författare)
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- Thunvik, Roger (författare)
- KTH,Miljöbedömning och -förvaltning
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Chatterjee, Debashis (författare)
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Ahmed, Kazi Matin (författare)
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- Jacks, Gunnar (författare)
- KTH,Miljögeokemi och ekoteknik
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Mukherjee, Arun B. (författare)
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Jean, Jiin-Shuh (författare)
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(creator_code:org_t)
- Informa UK Limited, 2011
- 2011
- Engelska.
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Ingår i: Journal of Environmental Science and Health. Part A. - : Informa UK Limited. - 1093-4529 .- 1532-4117. ; 46:11, s. 1163-1176
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Arsenic (As) enrichment in groundwater has become a major global environmental disaster. Groundwater samples were collected from 64 sites located in the districts of 24-Parganas (S), and Nadia in West Bengal, India (Bhagirathi sub-basin), and 51 sites located in the districts of Comilla, Noakhali, Magura, Brahman baria, Laxmipur, Munshiganj, Faridpur and Jhenaida in Bangladesh (Padma-Meghna sub-basin). Groundwater samples were also collected from two As-affected areas (Chianan and Lanyang plains) of Taiwan (n = 26). The concentrations of major solutes in groundwater of the Padma-Meghna sub-basin are more variable than the Bhagirathi sub-basin, suggesting variations in the depositional and hydrological settings. Arsenic concentrations in groundwaters of the studied areas showed large variations, with mean As concentrations of 125 mu g/L (range: 0.20 to 1,301 mu g/L) in Bhagirathi sub-basin, 145 mu g/L (range: 0.20 to 891 mu g/L) in Padma-Meghna sub-basin, 209 mu g/L (range: 1.3 to 575 mu g/L) in Chianan plain, and 102 mu g/L (range: 2.5 to 348 mu g/L) in Lanyang plain groundwater. The concentrations of Fe, and Mn are also highly variable, and are mostly above the WHO-recommended guideline values and local (Indian and Bangladeshi) drinking water standard. Piper plot shows that groundwaters of both Bhagirathi and Padma-Meghna sub-basins are of Ca-HCO(3) type. The Chianan plain groundwaters are of Na-Cl type, suggesting seawater intrusion, whereas Lanyang plain groundwaters are mostly of Na-HCO(3) type. The study shows that reductive dissolution of Fe(III)-oxyhydroxides is the dominant geochemical process releasing As from sediment to groundwater in all studied areas.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Nyckelord
- Arsenic
- Bengal Basin
- Chianan plain
- Fe-reduction
- geochemistry
- trace elements
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Maity, Jyoti Pra ...
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Nath, Bibhash
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Chen, Chien-Yen
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Bhattacharya, Pr ...
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Sracek, Ondra
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Bundschuh, Joche ...
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visa fler...
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Kar, Sandeep
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Thunvik, Roger
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Chatterjee, Deba ...
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Ahmed, Kazi Mati ...
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Jacks, Gunnar
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Mukherjee, Arun ...
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Jean, Jiin-Shuh
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