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| Titel |
Bromine isotopes and methyl bromide in the atmosphere |
| VerfasserIn |
Brett F. Thornton, Axel Horst, Daniel Carrizo, Henry Holmstrand, Matthew S. Johnson, Örjan Gustafsson |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250040556
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| Zusammenfassung |
| Anthropogenic methyl bromide production is now constrained by international agreements,
yet the natural production and loss pathways of this gas are very poorly understood,
and its budget is not balanced. As part of the HVOCSIA (Halogenated Volatile
Organic Compound Specific Isotope Analysis) project, we use recently developed
compound-specific isotope analysis techniques to examine the δ81Br of anthropogenic
methyl bromide, and natural methyl bromide sampled from various arctic and marine
environments. The various production and loss processes are expected to imprint
themselves on the bromine isotopic composition of methyl bromide. In combination
with other isotope systems (δ37Cl, δ13C, δD and Î14C), this allows for precise
improved studies of both source apportionment and reactions of halogenated gases in
the atmosphere. We report here our first results with the bromine isotope system. |
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