About: Microbial effects on the release and attenuation of arsenic in the shallow subsurface of a natural geochemical anomaly

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About: Microbial effects on the release and attenuation of arsenic in the shallow subsurface of a natural geochemical anomaly Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1016/j.envpol.2013.05.010
Description	Critical factors leading to arsenic release and attenuation from the shallow subsurface were studied with multidisciplinary approach in the natural gold-arsenic geochemical anomaly at Mokrsko (Czech Republic). The results show that microbial reduction promotes arsenic release from Fe(III) (hydr)oxides and Fe(III) arsenates, thereby enhancing dissolved arsenic in the shallow groundwater at average concentration of 7.76 mg/L. In the organic-rich aggregates and wood particles, however, microbial sulfate reduction triggers the formation of realgar deposits, leading to accumulation of As in the distinct organic-rich patches of the shallow subsurface. We conclude that precipitation of realgar in the shallow subsurface of soil/sediment depends on specific and non-trivial combination of water and rock chemistry, microbial community composition and spatial organisation of the subsurface zone, where speciation in saturated environments varied on a centimeter scale from reduced (decomposed wood, H2S and realgar present) to oxidized (goethite and arsenate minerals are present). Critical factors leading to arsenic release and attenuation from the shallow subsurface were studied with multidisciplinary approach in the natural gold-arsenic geochemical anomaly at Mokrsko (Czech Republic). The results show that microbial reduction promotes arsenic release from Fe(III) (hydr)oxides and Fe(III) arsenates, thereby enhancing dissolved arsenic in the shallow groundwater at average concentration of 7.76 mg/L. In the organic-rich aggregates and wood particles, however, microbial sulfate reduction triggers the formation of realgar deposits, leading to accumulation of As in the distinct organic-rich patches of the shallow subsurface. We conclude that precipitation of realgar in the shallow subsurface of soil/sediment depends on specific and non-trivial combination of water and rock chemistry, microbial community composition and spatial organisation of the subsurface zone, where speciation in saturated environments varied on a centimeter scale from reduced (decomposed wood, H2S and realgar present) to oxidized (goethite and arsenate minerals are present). (en)
Title	Microbial effects on the release and attenuation of arsenic in the shallow subsurface of a natural geochemical anomaly Microbial effects on the release and attenuation of arsenic in the shallow subsurface of a natural geochemical anomaly (en)
skos:prefLabel	Microbial effects on the release and attenuation of arsenic in the shallow subsurface of a natural geochemical anomaly Microbial effects on the release and attenuation of arsenic in the shallow subsurface of a natural geochemical anomaly (en)
skos:notation	RIV/00216208:11310/13:10139383!RIV14-GA0-11310___
http://linked.open...avai/riv/aktivita	I P S Z
http://linked.open...avai/riv/aktivity	I, P(GPP210/10/P096), S, Z(AV0Z30130516), Z(MSM0021620855), Z(MSM0021620858)
http://linked.open...iv/cisloPeriodika	neuvedeno
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Redlich, Aleš Drahota, Petr Čepička, Ivan Falteisek, Lukáš
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	88148
http://linked.open...ai/riv/idVysledku	RIV/00216208:11310/13:10139383
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Realgar; dsrB; arrA; Microbial mobilization; Arsenic (en)
http://linked.open.../riv/klicoveSlovo	Arsenic Microbial mobilization Realgar arrA dsrB
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[46B393D71925]
http://linked.open...i/riv/nazevZdroje	Environmental Pollution
http://linked.open...in/vavai/riv/obor	CB
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Biogeochemical transformations of arsenic in circumneutral soils and streambed sediments at the Mokrsko gold deposit
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	180
http://linked.open...iv/tvurceVysledku	Matoušek, Tomáš Rohovec, Jan Drahota, Petr Čepička, Ivan Falteisek, Lukáš Redlich, Aleš
http://linked.open...ain/vavai/riv/wos	000322425300013
http://linked.open...n/vavai/riv/zamer	Zemský systém v průsečíku geologických procesů, vývoje života, klimatických a antropogenních vlivů Material flow mechanisms in the upper spheres of the Earth Signaling and cellular response mechanisms
issn	0269-7491
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.envpol.2013.05.010
http://localhost/t...ganizacniJednotka	11310

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