Hydrochemistry and isotopic studies to identify Ganges River and riverbank groundwater interaction, southern Bangladesh

R. K. Majumder, M. A. Halim, J. Shimada, Bidyut Baran Saha, A. Zahid, M. Q. Hasan, M. S. Islam

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The Ganges River water and riverbank shallow groundwater were studied during a single wet season using the hydrochemical and isotopic composition of its dissolved load. The dissolved concentrations of major ions (Cl-, SO42-, NO3-, HCO3-, Ca2+, Na+, Mg2+, and K+), trace elements (barium (Ba) and strontium (Sr)) and stable isotopes (O and D) were determined on samples collected from the Ganges River and its riverbank shallow aquifers. In the present study, the shallow groundwater differs significantly from the Ganges River water; it shows distinct high concentrations of Ca2+, Mg2+, HCO3-, Ba, and Sr due to water-rock interaction and this in particular suggests that the Ganges River may not contribute significantly to the riverbank shallow aquifers during wet season. Besides, the sum of the total cationic charge (∑+, in milliequivalents per liter) in the groundwater shows high values (2.48 to 13.91 meq/L, average 9.12 meq/L), which is much higher than the sum of the cations observed in the Ganges water (1.36 to 3.10 meq/L, average 1.94 meq/L). Finally, the more depleted stable isotopic (δ18O and δ2H) compositions of the Ganges River water are in contrast to those of the riverbank aquifer having enriched stable isotopic values during the wet season and the riverbank groundwater thus has a purely local origin from precipitation.

Original languageEnglish
Pages (from-to)4585-4591
Number of pages7
JournalArabian Journal of Geosciences
Volume6
Issue number12
DOIs
Publication statusPublished - Dec 1 2013

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hydrochemistry
wet season
river water
groundwater
aquifer
barium
river
dissolved load
strontium isotope
water-rock interaction
strontium
stable isotope
isotopic composition
cation
trace element
ion
water

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

Hydrochemistry and isotopic studies to identify Ganges River and riverbank groundwater interaction, southern Bangladesh. / Majumder, R. K.; Halim, M. A.; Shimada, J.; Saha, Bidyut Baran; Zahid, A.; Hasan, M. Q.; Islam, M. S.

In: Arabian Journal of Geosciences, Vol. 6, No. 12, 01.12.2013, p. 4585-4591.

Research output: Contribution to journalArticle

Majumder, R. K. ; Halim, M. A. ; Shimada, J. ; Saha, Bidyut Baran ; Zahid, A. ; Hasan, M. Q. ; Islam, M. S. / Hydrochemistry and isotopic studies to identify Ganges River and riverbank groundwater interaction, southern Bangladesh. In: Arabian Journal of Geosciences. 2013 ; Vol. 6, No. 12. pp. 4585-4591.
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