| dc.contributor.author | Oduro, Harry D. | |
| dc.contributor.author | Cody, George D. | |
| dc.contributor.author | Farquhar, James | |
| dc.contributor.author | Harms, Brian | |
| dc.contributor.author | Kaufman, Alan J. | |
| dc.contributor.author | Sintim, Herman O. | |
| dc.date.accessioned | 2012-09-05T13:02:24Z | |
| dc.date.available | 2012-09-05T13:02:24Z | |
| dc.date.issued | 2011-10 | |
| dc.date.submitted | 2011-08 | |
| dc.identifier.issn | 0027-8424 | |
| dc.identifier.issn | 1091-6490 | |
| dc.identifier.uri | http://hdl.handle.net/1721.1/72514 | |
| dc.description.abstract | Thermochemical sulfate reduction experiments with simple amino acid and dilute concentrations of sulfate reveal significant degrees of mass-independent sulfur isotope fractionation. Enrichments of up to 13‰ for [superscript 33]S are attributed to a magnetic isotope effect (MIE) associated with the formation of thiol-disulfide, ion-radical pairs. Observed [superscript 36]S depletions in products are explained here by classical (mass-dependent) isotope effects and mixing processes. The experimental data contrasts strongly with multiple sulfur isotope trends in Archean samples, which exhibit significant [superscript 36]S anomalies. These results support an origin other than thermochemical sulfate reduction for the mass-independent signals observed for early Earth samples. | en_US |
| dc.language.iso | en_US | |
| dc.publisher | National Academy of Sciences | en_US |
| dc.relation.isversionof | http://dx.doi.org/10.1073/pnas.1108112108 | en_US |
| dc.rights | Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. | en_US |
| dc.source | PNAS | en_US |
| dc.title | Evidence of magnetic isotope effects during thermochemical sulfate reduction | en_US |
| dc.type | Article | en_US |
| dc.identifier.citation | Oduro, H. et al. “Evidence of Magnetic Isotope Effects During Thermochemical Sulfate Reduction.” Proceedings of the National Academy of Sciences 108.43 (2011): 17635–17638. | en_US |
| dc.contributor.department | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences | en_US |
| dc.contributor.approver | Oduro, Harry D. | |
| dc.contributor.mitauthor | Oduro, Harry D. | |
| dc.relation.journal | Proceedings of the National Academy of Sciences | en_US |
| dc.eprint.version | Final published version | en_US |
| dc.identifier.pmid | 21997216 | |
| dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
| eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
| dspace.orderedauthors | Oduro, H.; Harms, B.; Sintim, H. O.; Kaufman, A. J.; Cody, G.; Farquhar, J. | en |
| mit.license | PUBLISHER_POLICY | en_US |
| mit.metadata.status | Complete | |
