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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F09%3A00010664%21RIV10-MSM-15310___
rdf:type
n13:Vysledek skos:Concept
dcterms:description
Hydrogeochemical investigations along an E-W transect in the middle Meghna basin show groundwater chemistry and redox condition vary considerably with the change in geology. Groundwater in the Holocene shallow (<150 m bgl) alluvial aquifer in western part of the transect is affected by high arsenic concentration (As >10 μg/l) and salinity. On the other hand, groundwater from the Pliocene Dupi Tila sandy aquifer in the eastern part is fresh and low in As (<10 μg/l). The Holocene shallow aquifers are high in dissolved As, HCO-3, Fe and dissolved organic carbon (DOC), but generally low in SO2-4 and NO-3. High HCO3 concentrations (250-716 mg/l) together with high DOC concentrations (1.4-21.7 mg/l) in these aquifers reflect active sources of degradable natural organic matter that drives the biogeochemical process. There is generally de-coupling of As from other redox-sensitive elements. In contrast, the Pliocene aquifers are low in As, HCO3 and DOC. Molar ratio of Hydrogeochemical investigations along an E-W transect in the middle Meghna basin show groundwater chemistry and redox condition vary considerably with the change in geology. Groundwater in the Holocene shallow (<150 m bgl) alluvial aquifer in western part of the transect is affected by high arsenic concentration (As >10 μg/l) and salinity. On the other hand, groundwater from the Pliocene Dupi Tila sandy aquifer in the eastern part is fresh and low in As (<10 μg/l). The Holocene shallow aquifers are high in dissolved As, HCO-3, Fe and dissolved organic carbon (DOC), but generally low in SO2-4 and NO-3. High HCO3 concentrations (250-716 mg/l) together with high DOC concentrations (1.4-21.7 mg/l) in these aquifers reflect active sources of degradable natural organic matter that drives the biogeochemical process. There is generally de-coupling of As from other redox-sensitive elements. In contrast, the Pliocene aquifers are low in As, HCO3 and DOC. Molar ratio of
dcterms:title
Geological controls on groundwater chemistry and arsenic mobilization: Hydrogeochemical study along an E-W transect in the Meghna basin, Bangladesh Geological controls on groundwater chemistry and arsenic mobilization: Hydrogeochemical study along an E-W transect in the Meghna basin, Bangladesh
skos:prefLabel
Geological controls on groundwater chemistry and arsenic mobilization: Hydrogeochemical study along an E-W transect in the Meghna basin, Bangladesh Geological controls on groundwater chemistry and arsenic mobilization: Hydrogeochemical study along an E-W transect in the Meghna basin, Bangladesh
skos:notation
RIV/61989592:15310/09:00010664!RIV10-MSM-15310___
n3:aktivita
n17:S
n3:aktivity
S
n3:cisloPeriodika
1-2
n3:dodaniDat
n9:2010
n3:domaciTvurceVysledku
n12:9236872
n3:druhVysledku
n6:J
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
316306
n3:idVysledku
RIV/61989592:15310/09:00010664
n3:jazykVysledku
n4:eng
n3:klicovaSlova
groundwater chemistry; redox conditions; transect; Bangladesh
n3:klicoveSlovo
n5:transect n5:Bangladesh n5:redox%20conditions n5:groundwater%20chemistry
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[D21EFE3DCC7F]
n3:nazevZdroje
Journal of Hydrology
n3:obor
n11:DB
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
6
n3:rokUplatneniVysledku
n9:2009
n3:svazekPeriodika
378
n3:tvurceVysledku
Bhattacharya, Prosun Matin Ahmed, Kazi Jacks, Gunnar Šráček, Ondřej Hasan, Aziz Brömssen Von, Mattias
s:issn
0022-1694
s:numberOfPages
14
n10:organizacniJednotka
15310