Chromium isotopes and the fate of hexavalent chromium in the environment

Andre S. Ellis; Thomas M. Johnson; Thomas D. Bullen

doi:10.1126/science.1068368

Chromium isotopes and the fate of hexavalent chromium in the environment

Andre S. Ellis, Thomas M. Johnson, Thomas D. Bullen

Earth Science and Environmental Change

Research output: Contribution to journal › Article › peer-review

Abstract

Measurements of chromium (Cr) stable-isotope fractionation in laboratory experiments and natural waters show that lighter isotopes reacted preferentially during CR(VI) reduction by magnetite and sediments. The ⁵³Cr/⁵²Cr ratio of the product was 3.4 ± 0.1 per mil less than that of the reactant.⁵³Cr/⁵²Cr shifts in water samples indicate the extent of reduction, a critical process that renders toxic CR(VI) in the environment immobile and less toxic.

Original language	English (US)
Pages (from-to)	2060-2062
Number of pages	3
Journal	Science
Volume	295
Issue number	5562
DOIs	https://doi.org/10.1126/science.1068368
State	Published - Mar 15 2002

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abstract = "Measurements of chromium (Cr) stable-isotope fractionation in laboratory experiments and natural waters show that lighter isotopes reacted preferentially during CR(VI) reduction by magnetite and sediments. The 53Cr/52Cr ratio of the product was 3.4 ± 0.1 per mil less than that of the reactant.53Cr/52Cr shifts in water samples indicate the extent of reduction, a critical process that renders toxic CR(VI) in the environment immobile and less toxic.",

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AU - Bullen, Thomas D.

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AB - Measurements of chromium (Cr) stable-isotope fractionation in laboratory experiments and natural waters show that lighter isotopes reacted preferentially during CR(VI) reduction by magnetite and sediments. The 53Cr/52Cr ratio of the product was 3.4 ± 0.1 per mil less than that of the reactant.53Cr/52Cr shifts in water samples indicate the extent of reduction, a critical process that renders toxic CR(VI) in the environment immobile and less toxic.

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Chromium isotopes and the fate of hexavalent chromium in the environment

Abstract

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