Journal article
Removal of methyl bromide in coastal seawater: chemical and biological rates
Journal of Geophysical Research, Washington, DC, v 102(C8), pp 18715-18721
15 Aug 1997
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
A stable isotope tracer technique was used to investigate the loss rate of methyl bromide in surface ocean waters. Unfiltered and 0.2 mu m-filtered or autoclaved aliquants of Biscayne Bay seawater samples were spiked with super(1) super(3) CH sub(3) Br at roughly 10-100 times ambient concentrations (50-800 pM) and incubated for 10-30 hours. The concentration of super(1) super(3) CH sub(3) Br was monitored using gas chromatography with isotope dilution mass spectrometry, with CD sub(3) Br as the isotope spike. Removal rates in unfiltered aliquants were significantly faster than in the 0.2 mu m-filtered or autoclaved aliquants, indicating that some of the loss of methyl bromide was associated with particulate matter. Filtration experiments indicate that the particulate material responsible for methyl bromide loss is between 0.2 and 1.2 mu m in diameter, suggesting that bacteria are likely to be responsible. The particulate-related removal of methyl bromide was inhibited by autoclaving, supporting a biological mechanism.
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Details
- Title
- Removal of methyl bromide in coastal seawater: chemical and biological rates
- Creators
- Daniel KingEric Saltzman
- Publication Details
- Journal of Geophysical Research, Washington, DC, v 102(C8), pp 18715-18721
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:A1997XR35600012
- Scopus ID
- 2-s2.0-0031431051
- Other Identifier
- 991020546572304721
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- Web of Science research areas
- Oceanography