Arsenic distribution in the groundwater of the Central Gangetic Plains of Uttar Pradesh, India

Tripathi, Parijat and Ramanathan, A. L. and Kumar, Pankaj and Singh, Anshumali and Bhattacharya, P. and Thunvik, R. and Bundschuh, J. (2009) Arsenic distribution in the groundwater of the Central Gangetic Plains of Uttar Pradesh, India. In: Natural arsenic in groundwaters of Latin America. Arsenic in the Environment, 1. Taylor & Francis (CRC Press), London, United Kingdom, pp. 215-224. ISBN 9780415407717

Abstract

Elevated arsenic (As) concentrations have recently been reported from groundwaters of the Holocene aquifers of the Indo-Gangetic plains in the states of Uttar Pradesh, Bihar
and Jharkhand. This chapter reports about the nature of As contamination in groundwater in the Central Gangetic plain around the Ghazipur and Ballia districts, Uttar Pradesh, northern India. Groundwater samples were collected from a 2 km stretch in the flood plains of the Ganga and Ghagra rivers during two seasons for a one-year period. The samples were collected from shallow and deep tube wells and analyzed for hydrogeochemical parameters including the major anions and cations, and dissolved trace elements, including As. Arsenic concentrations in Ballia and Ghazipur
were around 200 μg/l, albeit at some places below the detection limit. The As concentrations were very high in locations close to the river basin. They were also very high near an inland lake. Concentration of As were found to be moderate to low in the interior flood plains between these two basins. Groundwater As in these districts showed that intermediate aquifers have more As compared to deep and shallow aquifers. It was observed that As concentrations in groundwater were comparatively low in most places, expect for few locations in Ghazipur, where it exceeded 200 μg/l. The correlation between Fe and As was low, and sulfate concentrations in groundwater
were relatively low. The shallow aquifers seem to be particularly at risk, due to the prevailing geochemical conditions in which oxidized and reduced waters mix, where the amount of sulfate, available for microbial reduction, seems to be limited. Further detailed study is needed in these two districts to obtain an insight into the precise geochemical processes occurring and controlling the As concentration in groundwaters.


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Item Type: Book Chapter (Commonwealth Reporting Category B)
Refereed: Yes
Item Status: Live Archive
Additional Information: 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: 06 Nov 2014 01:16
Last Modified: 12 Sep 2016 02:38
Uncontrolled Keywords: arsenic; groundwater; Central Gangetic Plains
Fields of Research : 05 Environmental Sciences > 0502 Environmental Science and Management > 050204 Environmental Impact Assessment
04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040603 Hydrogeology
URI: http://eprints.usq.edu.au/id/eprint/26268

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