Atmospheric halocarbons: A discussion with emphasis on chloroform
Abstract
Bleaching of paper pulp represents a major industrial use of chlorine and could provide an environmentally significant source of atmospheric halocarbons. The related global production of chloroform is estimated at 3 × 10^5 ton yr^(−1) and there could be additional production associated with atmospheric decomposition of perchloroethylene. Estimates are given for the production of methyl chloride, methyl bromide and methyl iodide, 5.2 × 10^6, 7.7 × 10^4, and 7.4 × 10^5 ton yr^(−1) respectively. The relative yields of CH_3Cl, CH_3Br and CH_3I are consistent with the hypothesis of a marine biological source for these compounds. Concentrations of other halocarbons observed in the atmosphere appear to indicate industrial sources.
Additional Information
© 1975 American Geophysical Union. Received June 12, 1975; Accepted August 7, 1975. We are indebted particularly to J.C. Morris who shared readily with us his remarkable insights in to the chemistry of chlorinated water. We thank C.L. Klingman for providing us with the contents of Table 3, and R. Rasmussen for making available his unpublished measurements. The work was supported in part by the Atmospheric Sciences Division of the National Science Foundation under Grant GA33990X and by the National Aeronautics and Space Administration under Grant NASA NSG 2031 to Harvard University.Attached Files
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- Eprint ID
- 48804
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- CaltechAUTHORS:20140822-100358485
- GA33990X
- NSF
- NSG 2031
- NASA
- Created
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2014-08-25Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences