| Numéro |
J. Phys. IV France
Volume 107, May 2003
|
|
|---|---|---|
| Page(s) | 293 - 296 | |
| DOI | https://doi.org/10.1051/jp4:20030299 | |
J. Phys. IV France 107 (2003) 293
DOI: 10.1051/jp4:20030299
Mobilization of arsenic in sedimentary aquifer vis-à-vis subsurface iron reduction processes
D. Chatterjee1, S. Chakraborty1, 2, B. Nath1, 3, J. Jana1, R. Bhattacharyya1, S. B. Mallik3 and L. Charlet21 Department of Chemistry, University of Kalyani, Kalyani 741235, West Bengal, India
2 LGIT, OSUG, BP. 53, 38041 Grenoble cedex 9, France
3 Department of Geological Sciences, Jadavpur University, Jadavpur, Kolkata-32, India
Abstract
Groundwater of the arsenic affected areas demonstrates that the water is Ca-bocarbonate
type and typical anoxie in nature. High arsenic groundwater is distributed in patches and "hot spots" are identifie in palaeo-meander
belt. Iron rich arsenic traps undergo reduction and release redox sensitive species (As and Fe) under local reducing conditions.
Releases of redox species are often depends on land-use pattern and the abundance of bio-available fonns of iron oxides/minerals.
© EDP Sciences 2003