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

1 Citation (Scopus)

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
PublisherTaylor and Francis - Balkema
Pages93-95
Number of pages3
ISBN (Print)9780415637633
DOIs
Publication statusPublished - 2012
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
Country/TerritoryAustralia
CityCairns, QLD
Period12-07-2212-07-27

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Pollution

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