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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003726naa a2200541 4500
001oai:DiVA.org:kth-139935
003SwePub
008140115s2013 | |||||||||||000 ||eng|
024a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1399352 URI
024a https://doi.org/10.1016/j.jhazmat.2012.07.0142 DOI
040 a (SwePub)kth
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Bhowmick, S.4 aut
2451 0a Arsenic mobilization in the aquifers of three physiographic settings of West Bengal, India :b Understanding geogenic and anthropogenic influences
264 1b 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 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Annan geovetenskap och miljövetenskap0 (SwePub)105992 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Other Earth and Related Environmental Sciences0 (SwePub)105992 hsv//eng
650 7a TEKNIK OCH TEKNOLOGIERx Samhällsbyggnadsteknikx Vattenteknik0 (SwePub)201072 hsv//swe
650 7a 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
700a Nath, B.4 aut
700a Halder, Diptiu KTH,Mark- och vattenteknik4 aut0 (Swepub:kth)u17u8eue
700a Biswas, Ashisu KTH,Mark- och vattenteknik4 aut0 (Swepub:kth)u13pc7ng
700a Majumder, S.4 aut
700a Mondal, P.4 aut
700a Chakraborty, S.4 aut
700a Nriagu, J.4 aut
700a Bhattacharya, Prosunu KTH,Mark- och vattenteknik4 aut0 (Swepub:kth)u19v7ore
700a Iglesias, M.4 aut
700a Roman-Ross, G.4 aut
700a Guha Mazumder, D.4 aut
700a Bundschuh, J.4 aut
700a Chatterjee, D.4 aut
710a KTHb Mark- och vattenteknik4 org
773t Journal of Hazardous Materialsd : Elsevier BVg 262, s. 915-923q 262<915-923x 0304-3894x 1873-3336
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-139935
8564 8u https://doi.org/10.1016/j.jhazmat.2012.07.014

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