Arsenic release from biotite into a Holocene groundwater aquifer in Bangladesh

Ashraf Ali Seddique, Harue Masuda, Muneki Mitamura, Keiji Shinoda, Toshiro Yamanaka, Takaaki Itai, Teruyuki Maruoka, Kenji Uesugi, Kazi Matin Ahmed, Dipak Kumar Biswas

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Abstract

Continuous core sediments (to a depth of 90.1 m) taken at a transitional area of Holocene and Pleistocene deposits in Sonargaon, Bangladesh were characterized for their mineralogy and chemistry. Among the sediments of the lower part of the Holocene aquifer (depth: 18-29 m), where most domestic wells are installed, As is mostly fixed in biotite and organic phases. A positive correlation of As concentration with those of Al and Fe but not that of total organic C clearly suggests that biotite is a primary source of As. Although microbial reduction-dissolution of As-containing Fe oxyhydroxides is thought to cause As-enriched groundwater in the Ganges-Brahmaputra-Meghna delta plain, the authors conclude that chemical weathering of biotite is the primary formation mechanism and prevailing reducing conditions contribute to the expansion of As-enriched groundwater in the study area.

Original languageEnglish
Pages (from-to)2236-2248
Number of pages13
JournalApplied Geochemistry
Volume23
Issue number8
DOIs
Publication statusPublished - Aug 2008

Fingerprint

Arsenic
Aquifers
biotite
Groundwater
arsenic
Sediments
Holocene
aquifer
groundwater
Mineralogy
Weathering
Dissolution
Deposits
chemical weathering
formation mechanism
sediment core
mineralogy
dissolution
Pleistocene
well

ASJC Scopus subject areas

  • Geochemistry and Petrology

Cite this

Seddique, A. A., Masuda, H., Mitamura, M., Shinoda, K., Yamanaka, T., Itai, T., ... Biswas, D. K. (2008). Arsenic release from biotite into a Holocene groundwater aquifer in Bangladesh. Applied Geochemistry, 23(8), 2236-2248. https://doi.org/10.1016/j.apgeochem.2008.03.007

Arsenic release from biotite into a Holocene groundwater aquifer in Bangladesh. / Seddique, Ashraf Ali; Masuda, Harue; Mitamura, Muneki; Shinoda, Keiji; Yamanaka, Toshiro; Itai, Takaaki; Maruoka, Teruyuki; Uesugi, Kenji; Ahmed, Kazi Matin; Biswas, Dipak Kumar.

In: Applied Geochemistry, Vol. 23, No. 8, 08.2008, p. 2236-2248.

Research output: Contribution to journalArticle

Seddique, AA, Masuda, H, Mitamura, M, Shinoda, K, Yamanaka, T, Itai, T, Maruoka, T, Uesugi, K, Ahmed, KM & Biswas, DK 2008, 'Arsenic release from biotite into a Holocene groundwater aquifer in Bangladesh', Applied Geochemistry, vol. 23, no. 8, pp. 2236-2248. https://doi.org/10.1016/j.apgeochem.2008.03.007
Seddique AA, Masuda H, Mitamura M, Shinoda K, Yamanaka T, Itai T et al. Arsenic release from biotite into a Holocene groundwater aquifer in Bangladesh. Applied Geochemistry. 2008 Aug;23(8):2236-2248. https://doi.org/10.1016/j.apgeochem.2008.03.007
Seddique, Ashraf Ali ; Masuda, Harue ; Mitamura, Muneki ; Shinoda, Keiji ; Yamanaka, Toshiro ; Itai, Takaaki ; Maruoka, Teruyuki ; Uesugi, Kenji ; Ahmed, Kazi Matin ; Biswas, Dipak Kumar. / Arsenic release from biotite into a Holocene groundwater aquifer in Bangladesh. In: Applied Geochemistry. 2008 ; Vol. 23, No. 8. pp. 2236-2248.
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