REIFENHAUSER, W and HEUMANN, KG (1992) DETERMINATIONS OF METHYL-IODIDE IN THE ANTARCTIC ATMOSPHERE AND THE SOUTH POLAR SEA. ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS, 26 (16). pp. 2905-2912. ISSN 0004-6981,
Full text not available from this repository.Abstract
Methyl iodide (CH3I) concentrations were determined in the atmosphere and in surface sea water near the Antarctic Peninsula with a GC/ECD system during October-December 1987. The mean air concentration of methyl iodide was 2.4 pptv with a corresponding seawater concentration of 2.6 ng l-1. In addition chloroiodomethane (CH2ClI) was detected in some of the seawater samples as a second volatile organoiodine species. No relationship between methyl iodide and biogenic brominated methanes was found. From this it follows that methyl iodide has a different pathway of biogenic production in marine organisms than the brominated methanes. Based on a two-phase model a global sea-to-air flux for methyl iodide of 8 x 10(11) g yr-1 was calculated. This is important for the balance of the global biogeochemical iodine cycle assuming that methyl iodide is by far the dominant volatile organoiodine species in the environment.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | AIR; OVERABUNDANCES; HALOCARBONS; KELP; CH3I; METHYL IODIDE; ANTARCTICA; SEA WATER; ATMOSPHERE; GC/ECD SYSTEM |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:44 |
| URI: | https://pred.uni-regensburg.de/id/eprint/54297 |
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