Comparison of delta53CrCr(VI) values of contaminated groundwater at two industrial sites in the eastern U.S. with contrasting availability of reducing agents
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F18%3A00000173" target="_blank" >RIV/00025798:_____/18:00000173 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0009254118300457?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0009254118300457?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.chemgeo.2018.01.033" target="_blank" >10.1016/j.chemgeo.2018.01.033</a>
Alternative languages
Result language
angličtina
Original language name
Comparison of delta53CrCr(VI) values of contaminated groundwater at two industrial sites in the eastern U.S. with contrasting availability of reducing agents
Original language description
Natural attenuation of groundwater contaminated by toxic hexavalent chromium [Cr(VI)] was studied at two industrial sites in the eastern U.S. Concentration and isotope composition of the residual Cr(VI) were determined at site A in Connecticut whose aquifer was polluted by electroplating solutions between 1930 and 1995, and at site B in New Jersey whose aquifer was polluted by soluble chromium-processing wastes between 1911 and 1963. Site A was characterized by lower mean Cr(VI) concentrations (2 mg L-1) and lower mean delta53CrCr(VI) values (1.84 per mille) in groundwater than site B (200 mg L-1 and 2.89 per mille, respectively). delta53CrCr(VI) values were strongly positively correlated with dissolved organic carbon (DOC; p = 0.002), but not with dissolved ferrous iron [Fe(II)], or divalent manganese [Mn(II)], indicating that DOC may have played a major role in spontaneous reduction of the mobile carcinogenic Cr(VI) to immobile non-toxic Cr(III). At site B, the supply of DOC may be nearly unlimited, due to the presence of a buried organic meadow mat at a depth of six meters below the ground surface. At site A, contaminated groundwater has been extracted and treated since 1995. The mean delta53CrCr(VI) values of the residual aqueous contamination at site A significantly decreased over the past 15 years (p < 0.05), possibly suggesting re-oxidation and remobilization of previously precipitated pollutant Cr.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10618 - Ecology
Result continuities
Project
<a href="/en/project/GA15-21373S" target="_blank" >GA15-21373S: Isotope mass balance for chromium-contaminated sites based on 53Cr/52Cr ratios of solid and liquid samples</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemical Geology
ISSN
0009-2541
e-ISSN
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Volume of the periodical
481
Issue of the periodical within the volume
March
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
11
Pages from-to
74-84
UT code for WoS article
000425892100007
EID of the result in the Scopus database
2-s2.0-85041578141