The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Genesis of hexavalent chromium from natural sources in soil and groundwater
Open accessAbstract
Naturally occurring Cr(VI) has recently been reported in ground and surface waters. Rock strata rich in Cr(III)-bearing minerals, in particular chromite, are universally found in these areas that occur near convergent plate margins. Here we report experiments demonstrating accelerated dissolution of chromite and subsequent oxidation of Cr(III) to aqueous Cr(VI) in the presence of birnessite, a common manganese mineral, explaining the generation of Cr(VI) by a Cr(III)-bearing mineral considered geochemically inert. Our results demonstrate that Cr(III) within ultramafic- and serpentinite-derived soils/sediments can be oxidized and dissolved through natural processes, leading to hazardous levels of aqueous Cr(VI) in surface and groundwater.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Kinetics of chromium(III) oxidation to chromium(VI) by reaction with manganese dioxide
Eary, L. E., & Rai, D. (1987) · Environmental Science & Technology · doi:10.1021/es00165a005 · Cited by 496
Cited by
Chromium in Drinking Water: Sources, Metabolism, and Cancer Risks
Zhitkovich, A. (2011) · Chemical Research in Toxicology · doi:10.1021/tx200251t · Cited by 1,132
Prasad, S., Yadav, K. K., Kumar, S., Gupta, N., Cabral-Pinto, M. M. S., Rezania, S., Radwan, N., & Alam, J. (2021) · Journal of Environmental Management · doi:10.1016/j.jenvman.2021.112174 · Cited by 744
Health hazards of hexavalent chromium (Cr (VI)) and its microbial reduction
Sharma, P., Singh, S. P., Parakh, S. K., & Tong, Y. W. (2022) · Bioengineered · doi:10.1080/21655979.2022.2037273 · Cited by 694
Fluctuations in Precambrian atmospheric oxygenation recorded by chromium isotopes
Frei, R., Gaucher, C., Poulton, S. W., & Canfield, D. E. (2009) · Nature · doi:10.1038/nature08266 · Cited by 653
Atmospheric oxygenation three billion years ago
Crowe, S. A., Døssing, L. N., Beukes, N. J., Bau, M., Kruger, S. J., Frei, R., & Canfield, D. E. (2013) · Nature · doi:10.1038/nature12426 · Cited by 640
Metadata
- Authors
- Oze, C., Bird, D. K., & Fendorf, S.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2007-04-17
- Volume
- 104
- Issue
- 16
- Pages
- 6544-6549
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2009658086
- Cited by
- 548
- References
- 1
- FWCI
- 5.92
- Type
- journal article
- Language
- en
- Open access
- bronze
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Genesis of hexavalent chromium from natural sources in soil and groundwater. https://app.cochat.ai/papers/10.1073/pnas.0701085104
- The paper
- Oze, C., Bird, D. K., & Fendorf, S. (2007). Genesis of hexavalent chromium from natural sources in soil and groundwater. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0701085104
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
