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http://hdl.handle.net/2445/163715
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DC Field | Value | Language |
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dc.contributor.author | Palau, Jordi | - |
dc.contributor.author | Yu, R. | - |
dc.contributor.author | Hatijah Mortan, C. | - |
dc.contributor.author | Shouakar-Stash, O. | - |
dc.contributor.author | Rosell, Mònica | - |
dc.contributor.author | Freedman, D. | - |
dc.contributor.author | Sbarbati, C. | - |
dc.contributor.author | Fiorenza, S. | - |
dc.contributor.author | Aravena, R. | - |
dc.contributor.author | Marco-Urrea, E. | - |
dc.contributor.author | Elsner, M. | - |
dc.contributor.author | Soler i Gil, Albert | - |
dc.contributor.author | Hunkeler, D. | - |
dc.date.accessioned | 2020-06-02T12:47:56Z | - |
dc.date.available | 2020-06-02T12:47:56Z | - |
dc.date.issued | 2017-02-14 | - |
dc.identifier.issn | 0013-936X | - |
dc.identifier.uri | http://hdl.handle.net/2445/163715 | - |
dc.description.abstract | This study investigates, for the first time, dual C-Cl isotope fractionation during anaerobic biodegradation of 1,2-dichloroethane (1,2-DCA) via dihaloelimination by Dehalococcoides and Dehalogenimonas-containing enrichment cultures. Isotopic fractionation of 1,2-DCA (εbulkC and εbulkCl) for Dehalococcoides (−33.0 ± 0.4¿ and −5.1 ± 0.1¿) and Dehalogenimonas-containing microcosms (−23 ± 2¿ and −12.0 ± 0.8¿) resulted in distinctly different dual element C-Cl isotope correlations (Λ = Δδ13C/Δδ37Cl ≈ εbulkC/εbulkCl), 6.8 ± 0.2 and 1.89 ± 0.02, respectively. Determined isotope effects and detected products suggest that the difference on the obtained Λ values for biodihaloelimination could be associated with a different mode of concerted bond cleavage rather than two different reaction pathways (i.e., stepwise vs concerted). Λ values of 1,2-DCA were, for the first time, determined in two field sites under reducing conditions (2.1 ± 0.1 and 2.2 ± 2.9). They were similar to the one obtained for the Dehalogenimonas-containing microcosms (1.89 ± 0.02) and very different from those reported for aerobic degradation pathways in a previous laboratory study (7.6 ± 0.1 and 0.78 ± 0.03). Thus, this study illustrates the potential of a dual isotope analysis to differentiate between aerobic and anaerobic biodegradation pathways of 1,2-DCA in the field and suggests that this approach might also be used to characterize dihaloelimination of 1,2-DCA by different bacteria, which needs to be confirmed in future studies. | - |
dc.format.extent | 10 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Chemical Society | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1021/acs.est.6b04998 | - |
dc.relation.ispartof | Environmental Science & Technology, 2017, vol. 51, num. 5, p. 2685- 2694 | - |
dc.relation.uri | https://doi.org/10.1021/acs.est.6b04998 | - |
dc.rights | (c) American Chemical Society , 2017 | - |
dc.source | Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada) | - |
dc.subject.classification | Degradació dels sòls | - |
dc.subject.classification | Biodegradació | - |
dc.subject.classification | Isòtops | - |
dc.subject.other | Soil degradation | - |
dc.subject.other | Biodegradation | - |
dc.subject.other | Isotopes | - |
dc.title | Distinct dual C-Cl isotope fractionation patterns during anaerobic biodegradation of 1,2-dichloroethane: potential to characterize microbial degradation in the field | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 662479 | - |
dc.date.updated | 2020-06-02T12:47:56Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada) |
Files in This Item:
File | Description | Size | Format | |
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662479.pdf | 1.43 MB | Adobe PDF | View/Open |
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