Arsenic mobilization in the aquifers of three physiographic settings of West Bengal, India: understanding geogenic and anthropogenic influences
Article
Article Title | Arsenic mobilization in the aquifers of three physiographic settings of West Bengal, India: understanding geogenic and anthropogenic influences |
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ERA Journal ID | 4682 |
Article Category | Article |
Authors | Bhowmick, Subhamoy (Author), Nath, Bibhash (Author), Halder, Dipti (Author), Biswas, Ashis (Author), Majumder, Santanu (Author), Mondal, Priyanka (Author), Chakraborty, Sudipta (Author), Nriagu, Jerome (Author), Bhattacharya, Prosun (Author), Iglesias, Monica (Author), Roman-Ross, Gabriela (Author), Guha Mazumder, Debendranath (Author), Bundschuh, Jochen (Author) and Chatterjee, Debashis (Author) |
Journal Title | Journal of Hazardous Materials |
Journal Citation | 262, pp. 915-923 |
Number of Pages | 9 |
Year | 2013 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0304-3894 |
1873-3336 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jhazmat.2012.07.014 |
Web Address (URL) | http://www.sciencedirect.com/science/article/pii/S0304389412007212 |
Abstract | A comparative hydrogeochemical study was carried out in West Bengal, India covering three physiographic regions, Debagram and Chakdaha located in the Bhagirathi-Hooghly alluvial plain and Baruipur in the delta front, to demonstrate the control of geogenic and anthropogenic influences on groundwater arsenic (As) mobilization. Groundwater samples (n = 90) from tube wells were analyzed for different physico-chemical parameters. The low redox potential (Eh = -185 to -86 mV) and dominant As(III) and Fe(II) concentrations are indicative of anoxic nature of the aquifer. The shallow (<100 m) and deeper (>100 m) aquifers of Bhagirathi-Hooghly alluvial plains as well as shallow aquifers of delta front are characterized by Ca 2+ {single bond}HCO 3 - type water, whereas Na + and Cl - enrichment is found in the deeper aquifer of delta front. The equilibrium of groundwater with respect to carbonate minerals and their precipitation/dissolution seems to be controlling the overall groundwater chemistry. The low SO 4 2- and high DOC, PO 4 3- and HCO 3 concentrations in groundwater signify ongoing microbial mediated redox processes favoring As mobilization in the aquifer. The As release is influenced by both geogenic (i.e. geomorphology) and anthropogenic (i.e. unsewered sanitation) processes. Multiple geochemical processes, e.g., Fe-oxyhydroxides reduction and carbonate dissolution, are responsible for high As occurrence in groundwaters. |
Keywords | aquifers; arsenic; Bengal Delta Plain; geomorphology; land use; West Bengal |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 370510. Stratigraphy (incl. biostratigraphy, sequence stratigraphy and basin analysis) |
370799. Hydrology not elsewhere classified | |
300201. Agricultural hydrology | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Girona, Spain |
University of Sydney | |
University of Kalyani, India | |
Kanchrapara College, India | |
University of Michigan, United States | |
KTH Royal Institute of Technology, Sweden | |
DNGM Research Foundation, India | |
National Centre for Engineering in Agriculture | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q189v/arsenic-mobilization-in-the-aquifers-of-three-physiographic-settings-of-west-bengal-india-understanding-geogenic-and-anthropogenic-influences
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