Hydrogeochemistry of the alluvial aquifers of the central Gangetic Plain in India: constraints on source and mobility of arsenic

Ramanathan, A. L. and Tripathi, P. and Ranjan, R. and Kumar, Manish and Bhattacharya, P. and Elfverson, K. and Thunvik, R. and Jacks, G. and Sracek, O. and Bundschuh, J. and Tsujimura, M. (2010) Hydrogeochemistry of the alluvial aquifers of the central Gangetic Plain in India: constraints on source and mobility of arsenic. In: 3rd International Congress on Arsenic in the Environment (AS 2010): Arsenic in Geosphere and Human Diseases , 17-21 May 2010, Tainan, Taiwan.

Abstract

Until recently, most estimates of arsenic (As) pollution have focused on the predominance of As poisoning in the groundwater of West Bengal (India) and Bangladesh (Ahmed et al., 2004), which has been thought to be limited to the Ganges Delta (the lower Ganges Plain). Several authors suggested that the reductive dissolution of Fe(Ill)-­ oxyhydroxides in strongly reducing conditions of the young alluvial sediments is the cause for As mobilization (Bhattacharya et al., 1997; Ahmed et al., 2004; McArthur et al., 2001; Nickson el al., 1998; von Bromssen et al., 2007). Holocene alluvial aquifers of Ballia, Ghazipur and Bhagalpur district in the middle Gangetic Plain have high concentra­tions of geogenic As.
The As contaminated aquifers are pervasive within lowland organic rich, clayey deltaic sedi­ments in the Bengal Basin and locally within simi­lar facies in narrow, entrenched river valleys within the Ganges Alluvial Plain (Acharyya & Shah, 2004; Mukherjee et al., 2006). This study has been carried out with the following objectives: I) to quantify the As in the groundwater of the Ghazipur District, Uttar Pradesh, India, and 2) to understand the mechanism controlling the mobilization of As and its evolution.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2010 Taylor & Francis Group, London, UK. Permanent restricted access to published version due to publisher copyright policy.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 29 Sep 2014 06:27
Last Modified: 22 Dec 2014 02:23
Uncontrolled Keywords: arsenic; hydrogeochemistry; Ganges Delta; Gangetic Plain; India; West Bengal; Bangladesh
Fields of Research : 05 Environmental Sciences > 0502 Environmental Science and Management > 050204 Environmental Impact Assessment
05 Environmental Sciences > 0503 Soil Sciences > 050304 Soil Chemistry (excl. Carbon Sequestration Science)
04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040603 Hydrogeology
Socio-Economic Objective: D Environment > 96 Environment > 9611 Physical and Chemical Conditions of Water > 961103 Physical and Chemical Conditions of Water in Fresh, Ground and Surface Water Environments (excl. Urban and Industrial Use)
URI: http://eprints.usq.edu.au/id/eprint/26062

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