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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F13%3A10139383" target="_blank" >RIV/00216208:11310/13:10139383 - isvavai.cz</a>

Alternative codes found

RIV/67985831:_____/13:00392994 RIV/68081715:_____/13:00392994

Result on the web

<a href="http://dx.doi.org/10.1016/j.envpol.2013.05.010" target="_blank" >http://dx.doi.org/10.1016/j.envpol.2013.05.010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.envpol.2013.05.010" target="_blank" >10.1016/j.envpol.2013.05.010</a>

Result language

angličtina

Original language name

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

Original language 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 andnon-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,

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CB - Analytical chemistry, separation

OECD FORD branch

—

Project

<a href="/en/project/GPP210%2F10%2FP096" target="_blank" >GPP210/10/P096: Biogeochemical transformations of arsenic in circumneutral soils and streambed sediments at the Mokrsko gold deposit</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Environmental Pollution

ISSN

0269-7491

e-ISSN

—

Volume of the periodical

180

Issue of the periodical within the volume

neuvedeno

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

84-91

UT code for WoS article

000322425300013

EID of the result in the Scopus database

—