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- W2972277424 endingPage "134331" @default.
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- W2972277424 abstract "The groundwater contamination by hexavalent chromium (Cr(VI)) in a site of the Matanza-Riachuelo River basin (MRB), Argentina, has been evaluated by determining the processes that control the natural mobility and attenuation of Cr(VI) in the presence of high nitrate (NO3−) contents. The groundwater Cr(VI) concentrations ranged between 1.9E-5 mM and 0.04 mM, while the NO3− concentrations ranged between 0.5 mM and 3.9 mM. In order to evaluate the natural attenuation of Cr(VI) and NO3− in the MRB groundwater, Cr and N isotopes were measured in these contaminants. In addition, laboratory batch experiments were performed to determine the isotope fractionation (ε) during the reduction of Cr(VI) under denitrifying conditions. While the Cr(VI) reduction rate is not affected by the presence of NO3−, the NO3− attenuation is slower in the presence of Cr(VI). Nevertheless, no significant differences on ε values were observed when testing the absence or presence of each contaminant. The ε53Cr determined in the batch experiments describe a two- stage trend, in which Stage I is characterized by ε53Cr ~−1.8‰ and Stage II by ε53Cr ~−0.9‰. The respective ε15NNO3 obtained is −23.9‰ whereas ε18ONO3 amount to −25.7‰. Using these ε values and a Rayleigh fractionation model we estimate that an average of 60% of the original Cr(VI) is removed from the groundwater of the contaminated site. Moreover, the average degree of NO3− attenuation by denitrification is found to be about 20%. This study provides valuable information about the dynamics of a complex system that can serve as a basis for efficient management of contaminated groundwater in the most populated and industrialized basin of Argentina." @default.
- W2972277424 created "2019-09-12" @default.
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- W2972277424 date "2020-01-01" @default.
- W2972277424 modified "2023-10-08" @default.
- W2972277424 title "Characterisation of the natural attenuation of chromium contamination in the presence of nitrate using isotopic methods. A case study from the Matanza-Riachuelo River basin, Argentina" @default.
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- W2972277424 cites W1810891646 @default.
- W2972277424 cites W1820192183 @default.
- W2972277424 cites W1964963456 @default.
- W2972277424 cites W1969799349 @default.
- W2972277424 cites W1974035374 @default.
- W2972277424 cites W1975373641 @default.
- W2972277424 cites W1980793623 @default.
- W2972277424 cites W1984257790 @default.
- W2972277424 cites W1985909066 @default.
- W2972277424 cites W1994318444 @default.
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- W2972277424 cites W1997106497 @default.
- W2972277424 cites W2000611186 @default.
- W2972277424 cites W2005558465 @default.
- W2972277424 cites W2008714427 @default.
- W2972277424 cites W2013528197 @default.
- W2972277424 cites W2017103972 @default.
- W2972277424 cites W2019992961 @default.
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- W2972277424 cites W2024004860 @default.
- W2972277424 cites W2035413328 @default.
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- W2972277424 doi "https://doi.org/10.1016/j.scitotenv.2019.134331" @default.
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