Characterization of subsurface sediments and its implication on arsenic mobilization in Gangetic plain

S. Kar, J. S. Jean, C. C. Liu, J. P. Maity, B. Nath, J. F. Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Geochemical analysis of core sediments from Barasat, India, a part of the Gangetic plain was conducted. High arsenic content was observed in shallow depth (<70 m). Sequential extraction study revealed association of arsenic with different solid phases in sediment. XRD analysis demonstrated that iron oxides/oxyhydroxides with residual magnetite and chlorite, illite and iron oxide/oxyhydroxide-coated quartz, feldspar are the dominant carriers of arsenic as evidenced by EDS spectra. XANES and EXAFS analysis indicated the dominance of As(III) and Fe(III) implying iron oxides/oxyhydroxides as the main carrier of As in the sediments.

Original languageEnglish
Title of host publicationUnderstanding the Geological and Medical Interface of Arsenic, As 2012 - 4th International Congress
Subtitle of host publicationArsenic in the Environment
Pages93-95
Number of pages3
Publication statusPublished - 2012 Aug 16
Event4th International Congress on Arsenic in the Environment, As 2012 - Cairns, QLD, Australia
Duration: 2012 Jul 222012 Jul 27

Publication series

NameUnderstanding the Geological and Medical Interface of Arsenic, As 2012 - 4th International Congress: Arsenic in the Environment

Other

Other4th International Congress on Arsenic in the Environment, As 2012
CountryAustralia
CityCairns, QLD
Period12-07-2212-07-27

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Pollution

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