Evidence of decoupling between arsenic and phosphate in shallow groundwater of Bangladesh and potential implications

• Published in: Applied geochemistry Vol. 77; pp. 167 - 177
• Main Authors: Aziz, Z., Bostick, B.C., Zheng, Y., Huq, M.R., Rahman, M.M., Ahmed, K.M., van Geen, A.
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.02.2017
• Subjects: aquifers; Arsenic; Bangladesh; geochemistry; Groundwater; iron; iron oxyhydroxides; irrigation; mixing; monsoon season; phosphates; prediction; sediments; sulfides; time series analysis; wells; X-ray absorption spectroscopy; Bangladesh; Groundwater; Arsenic; Bangladesh; arsenic

Reductive dissolution of iron oxyhydroxides and reduction of arsenic are often invoked as leading causes of high dissolved As levels in shallow groundwater of Bangladesh. The second of these assumptions is questioned here by comparing the behavior As and phosphate (P), a structural analog for As (V)...