Groundwater contamination with arsenic in Sherajdikhan, Bangladesh: Geochemical and hydrological implications

M. A. Halim, R. K. Majumder, S. A. Nessa, K. Oda, Yoshinari Hiroshiro, Bidyut Baran Saha, S. M. Hassain, Sk A. Latif, M. A. Islam, K. Jinno

Research output: Contribution to journalArticle

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Abstract

An integrated study has been carried out to elucidate the distribution and occurrence of arsenic in selected groundwater samples in the area of Sherajdikhan, Bangladesh. Arsenic and other parameters (T, pH, EC, Na +, K+, Ca2+, Mg2+, Cl-, NO3 -, SO4 2-, HCO3 -, PO4 3-, Fe, Mn and DOC) have been measured in groundwater samples collected from shallow/deep tube wells at different depths. Hydrogeochemical data suggest that the groundwaters are generally Ca-Mg-HCO3 and Mg-Ca-HCO3 types with bicarbonate (HCO 3 -) as the dominant anion, though the other type of water has also been observed. Dissolved arsenic in groundwater ranged from 0.006 to 0.461 mg/l, with 69% groundwater samples exceeded the Bangladesh limit for safe drinking water (0.05 mg/l). Correlation and principal component analysis have been performed to find out possible relationships among the examined parameters in groundwater. Low concentrations of NO3 - and SO 4 2-, and high concentrations of DOC, HCO3 - and PO4 3- indicate the reducing condition of subsurface aquifer where sediments are deposited with abundant organic matter. Distinct relationship of As with Fe and Mn, and strong correlation with DOC suggests that the biodegradation of organic matter along with reductive dissolution of Fe-Mn oxyhydroxides has being considered the dominant process to release As in the aquifers studied herein.

Original languageEnglish
Pages (from-to)73-84
Number of pages12
JournalEnvironmental Geology
Volume58
Issue number1
DOIs
Publication statusPublished - Jul 1 2009

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groundwater contamination
Arsenic
arsenic
Bangladesh
Groundwater
groundwater
Contamination
Aquifers
Biological materials
aquifers
organic matter
aquifer
Bicarbonates
Biodegradation
bicarbonates
biodegradation
bicarbonate
sampling
Potable water
Drinking Water

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Water Science and Technology
  • Pollution
  • Soil Science

Cite this

Groundwater contamination with arsenic in Sherajdikhan, Bangladesh : Geochemical and hydrological implications. / Halim, M. A.; Majumder, R. K.; Nessa, S. A.; Oda, K.; Hiroshiro, Yoshinari; Saha, Bidyut Baran; Hassain, S. M.; Latif, Sk A.; Islam, M. A.; Jinno, K.

In: Environmental Geology, Vol. 58, No. 1, 01.07.2009, p. 73-84.

Research output: Contribution to journalArticle

Halim, M. A. ; Majumder, R. K. ; Nessa, S. A. ; Oda, K. ; Hiroshiro, Yoshinari ; Saha, Bidyut Baran ; Hassain, S. M. ; Latif, Sk A. ; Islam, M. A. ; Jinno, K. / Groundwater contamination with arsenic in Sherajdikhan, Bangladesh : Geochemical and hydrological implications. In: Environmental Geology. 2009 ; Vol. 58, No. 1. pp. 73-84.
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