Understanding Arsenic Evolution in a Shallow, Reducing Aquifer in the Lower Mekong Basin, Cambodia Using Geochemical Tracers

Richards, L.A. et al. (2019) Understanding Arsenic Evolution in a Shallow, Reducing Aquifer in the Lower Mekong Basin, Cambodia Using Geochemical Tracers. In: Environmental Arsenic in a Changing World: Proceedings of the 7th International Congress and Exhibition on Arsenic in the Environment (AS 2018), Beijing, China, 1-6 Jul 2018, pp. 127-128. ISBN 9781351046633

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Millions of people globally are exposed to dangerous arsenic concentrations in groundwaterderived drinking water sources. Arsenic mobilization in circum-Himalayan groundwater is widely attributed to the reductive dissolution of iron minerals containing arsenic, although a number of questions remain the fundamental mechanisms of this process. In a high resolution study site in Kandal Province, Cambodia, the evolution of groundwater geochemistry was evaluated along dominant groundwater flowpaths in a heavily arsenic-contaminated aquifer using a suite of geochemical tracers (e.g. As, Fe, SO4, δ18O, δ2H, 3H/3He, 14C) to understand the processes which may contribute to arsenic mobilization in shallow, reducing aquifers typical to Southeast Asia.

Item Type:Conference Proceedings
Additional Information:This research was supported by a NERC Standard Research Grant (NE/J023833/1 to DP, BvD and CB), a NERC PhD studentship (NE/L501591/1 to DM) and a LeverhulmeTrust Early Career Fellowship (ECF2015-657 to LR). Stable isotope analysis was supported by the NERC Isotope Geosciences Facility (IP-1505-1114) and radiocarbon analysis by the NERC Radiocarbon Facility NRCF010001 (1814.0414, 1834.0714 and 1906.0415).
Glasgow Author(s) Enlighten ID:Bryant, Dr Charlotte and Boyce, Professor Adrian
Authors: Richards, L.A., Magnone, D., Sültenfuß, J., Boyce, A.J., Bryant, C., Sovann, C., van Dongen, D., Lapworth, D.J., Gooddy, D.C., Chambers, L., Balletine, C.J., and Poyla, A.A.
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Published Online:23 August 2019
Copyright Holders:Copyright © 2019 Taylor and Francis
Publisher Policy:Reproduced under a Creative Commons license

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