Search: onr:"swepub:oai:DiVA.org:kth-139935" > Arsenic mobilizatio...
Fältnamn | Indikatorer | Metadata |
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000 | 03726naa a2200541 4500 | |
001 | oai:DiVA.org:kth-139935 | |
003 | SwePub | |
008 | 140115s2013 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1399352 URI |
024 | 7 | a https://doi.org/10.1016/j.jhazmat.2012.07.0142 DOI |
040 | a (SwePub)kth | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Bhowmick, S.4 aut |
245 | 1 0 | a Arsenic mobilization in the aquifers of three physiographic settings of West Bengal, India :b Understanding geogenic and anthropogenic influences |
264 | 1 | b Elsevier BV,c 2013 |
338 | a print2 rdacarrier | |
500 | a QC 20140116 | |
520 | a 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 -86mV) and dominant As(III) and Fe(II) concentrations are indicative of anoxic nature of the aquifer. The shallow (<100m) and deeper (>100m) aquifers of Bhagirathi-Hooghly alluvial plains as well as shallow aquifers of delta front are characterized by Ca2+HCO3 - 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 SO4 2- and high DOC, PO4 3- and HCO3 - 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. | |
650 | 7 | a NATURVETENSKAPx Geovetenskap och miljövetenskapx Annan geovetenskap och miljövetenskap0 (SwePub)105992 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Other Earth and Related Environmental Sciences0 (SwePub)105992 hsv//eng |
650 | 7 | a TEKNIK OCH TEKNOLOGIERx Samhällsbyggnadsteknikx Vattenteknik0 (SwePub)201072 hsv//swe |
650 | 7 | a ENGINEERING AND TECHNOLOGYx Civil Engineeringx Water Engineering0 (SwePub)201072 hsv//eng |
653 | a Aquifers | |
653 | a Arsenic | |
653 | a Bengal Delta Plain | |
653 | a Geomorphology | |
653 | a Land use | |
653 | a West Bengal | |
700 | 1 | a Nath, B.4 aut |
700 | 1 | a Halder, Diptiu KTH,Mark- och vattenteknik4 aut0 (Swepub:kth)u17u8eue |
700 | 1 | a Biswas, Ashisu KTH,Mark- och vattenteknik4 aut0 (Swepub:kth)u13pc7ng |
700 | 1 | a Majumder, S.4 aut |
700 | 1 | a Mondal, P.4 aut |
700 | 1 | a Chakraborty, S.4 aut |
700 | 1 | a Nriagu, J.4 aut |
700 | 1 | a Bhattacharya, Prosunu KTH,Mark- och vattenteknik4 aut0 (Swepub:kth)u19v7ore |
700 | 1 | a Iglesias, M.4 aut |
700 | 1 | a Roman-Ross, G.4 aut |
700 | 1 | a Guha Mazumder, D.4 aut |
700 | 1 | a Bundschuh, J.4 aut |
700 | 1 | a Chatterjee, D.4 aut |
710 | 2 | a KTHb Mark- och vattenteknik4 org |
773 | 0 | t Journal of Hazardous Materialsd : Elsevier BVg 262, s. 915-923q 262<915-923x 0304-3894x 1873-3336 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-139935 |
856 | 4 8 | u https://doi.org/10.1016/j.jhazmat.2012.07.014 |
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