Geochemistry of arsenic in the deltaic environment: Shallow versus deeper aquifer levels

Authors: Chatterjee, D., Biswasv, A., Majumder, S., Berner, Z., Neidhardt, H.

Publication Date: 01/01/2010

Pages: 437-440

Abstract:

This study deals with groundwater quality and As mobilization behavior in the shallow (up to ∼50 m) and deeper (below ∼100 m) aquifer levels in Bengal Delta Plain. The groundwaters from shallow aquifer levels are enriched with redox sensitive species, HCO3 ⁻, DOC, PO4 ⁻³ and NH4 ⁺, whereas the deeper aquifer level contains relatively low As, PO4 ⁻³, DOC and NH4 ⁺, low to very low Fe (II), and high HCO3 ⁻. In the shallow aquifer levels, As release to the groundwater is a combination of Fe reduction, local recharge and ion-exchange processes. However, in the deeper aquifer As mobilization is mostly governed by carbonate dissolution and chloride exchange processes.

Source: Scopus

Geochemistry of arsenic in the deltaic environment: Shallow versus deeper aquifer levels

Authors: Chatterjee, D., Biswas, A., Majumder, S., Berner, Z., Neidhardt, H.

Publication Date: 2010

Pages: 437-440

ISBN: 978-0-415-60426-0

Source: Web of Science