Skip to main content
USGS - science for a changing world

Degradation of methyl bromide and methyl chloride in soil microcosms: Use of stable C isotope fractionation and stable isotope probing to identify reactions and the responsible microorganisms

Dates

Year
2004

Citation

Miller, Laurence G, Warner, Karen L, Baesman, Shaun M, Oremland, Ronald S, McDonald, Ian R, Radajewski, Stefan, and Murrell, J.Colin, 2004, Degradation of methyl bromide and methyl chloride in soil microcosms: Use of stable C isotope fractionation and stable isotope probing to identify reactions and the responsible microorganisms: Geochimica et Cosmochimica Acta, v. 68, iss. 15, p. 3271-3283.

Summary

Bacteria in soil microcosm experiments oxidized elevated levels of methyl chloride (MeCl) and methyl bromide (MeBr), the former compound more rapidly than the latter. MeBr was also removed by chemical reactions while MeCl was not. Chemical degradation dominated the early removal of MeBr and accounted for more than half of its total loss. Fractionation of stable carbon isotopes during chemical degradation of MeBr resulted in a kinetic isotope effect (KIE) of 59 ± 7‰. Soil bacterial oxidation dominated the later removal of MeBr and MeCl and was characterized by different KIEs for each compound. The KIE for MeBr oxidation was 69 ± 9‰ and the KIE for MeCl oxidation was 49 ± 3‰. Stable isotope probing revealed that different populations [...]

Contacts

Communities

  • USGS National Research Program

Tags

Categories
Types

Provenance

Added to ScienceBase on Fri Apr 19 10:35:40 MDT 2013 by processing file <b>Microbial Biogeochemistry of Aquatic Environments.xml</b> in item <a href="https://www.sciencebase.gov/catalog/item/504216b7e4b04b508bfd3347">https://www.sciencebase.gov/catalog/item/504216b7e4b04b508bfd3347</a>

Additional Information

Identifiers

Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1016/j.gca.2003.11.028

Citation Extension

journalGeochimica et Cosmochimica Acta
parts
typePages
value3271-3283
typeVolume
value68
typeIssue
value15
citationTypeJournal Article

Item Actions

View Item as ...

Save Item as ...

View Item...