An FTIR product study of the photooxidation of dimethyl disulfide
The products of the 254 nm photolysis of ppm levels of DMDS have been studied as a function of the O sub(2) partial pressure at 760 Torr (N sub(2) + O sub(2)) and 298 plus or minus 2 K. The major sulfur containing compounds detected were SO sub(2) and CH sub(3)SO sub(3)H (methane sulfonic acid, MSA)...
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| Veröffentlicht in: | Journal of atmospheric chemistry 1994-04, Vol.18 (3), p.267-289 |
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| container_end_page | 289 |
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| container_issue | 3 |
| container_start_page | 267 |
| container_title | Journal of atmospheric chemistry |
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| creator | BARNES, I BECKER, K. H MIHALOPOULOS, N |
| description | The products of the 254 nm photolysis of ppm levels of DMDS have been studied as a function of the O sub(2) partial pressure at 760 Torr (N sub(2) + O sub(2)) and 298 plus or minus 2 K. The major sulfur containing compounds detected were SO sub(2) and CH sub(3)SO sub(3)H (methane sulfonic acid, MSA) and the major carbon containing compounds were CO, HCHO, CH sub(3)OH and CH sub(3)OOH (methyl hydroperoxide). Within the experimental error limits the observed sulfur and carbon balances were approximately 100%. CH sub(3)OOH has been observed for the first time in such a photooxidation system. Its observation provides evidence for the formation of CH sub(3) radicals by the further oxidation of the CH sub(3)S radicals formed in the primary photolysis step. Some of the possible implications of the results of this study for the degradation mechanisms of other atmospherically important organic sulfur compounds, in particular DMS, are briefly considered. |
| doi_str_mv | 10.1007/BF00696783 |
| format | Article |
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H ; MIHALOPOULOS, N</creator><creatorcontrib>BARNES, I ; BECKER, K. H ; MIHALOPOULOS, N</creatorcontrib><description>The products of the 254 nm photolysis of ppm levels of DMDS have been studied as a function of the O sub(2) partial pressure at 760 Torr (N sub(2) + O sub(2)) and 298 plus or minus 2 K. The major sulfur containing compounds detected were SO sub(2) and CH sub(3)SO sub(3)H (methane sulfonic acid, MSA) and the major carbon containing compounds were CO, HCHO, CH sub(3)OH and CH sub(3)OOH (methyl hydroperoxide). Within the experimental error limits the observed sulfur and carbon balances were approximately 100%. CH sub(3)OOH has been observed for the first time in such a photooxidation system. Its observation provides evidence for the formation of CH sub(3) radicals by the further oxidation of the CH sub(3)S radicals formed in the primary photolysis step. Some of the possible implications of the results of this study for the degradation mechanisms of other atmospherically important organic sulfur compounds, in particular DMS, are briefly considered.</description><identifier>ISSN: 0167-7764</identifier><identifier>EISSN: 1573-0662</identifier><identifier>DOI: 10.1007/BF00696783</identifier><identifier>CODEN: JATCE2</identifier><language>eng</language><publisher>Dordrecht: Springer</publisher><subject>Chemical composition and interactions. 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Some of the possible implications of the results of this study for the degradation mechanisms of other atmospherically important organic sulfur compounds, in particular DMS, are briefly considered.</description><subject>Chemical composition and interactions. 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CH sub(3)OOH has been observed for the first time in such a photooxidation system. Its observation provides evidence for the formation of CH sub(3) radicals by the further oxidation of the CH sub(3)S radicals formed in the primary photolysis step. Some of the possible implications of the results of this study for the degradation mechanisms of other atmospherically important organic sulfur compounds, in particular DMS, are briefly considered.</abstract><cop>Dordrecht</cop><pub>Springer</pub><doi>10.1007/BF00696783</doi><tpages>23</tpages></addata></record> |
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| ispartof | Journal of atmospheric chemistry, 1994-04, Vol.18 (3), p.267-289 |
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| language | eng |
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| source | Springer journals |
| subjects | Chemical composition and interactions. Ionic interactions and processes Earth, ocean, space Exact sciences and technology External geophysics Meteorology |
| title | An FTIR product study of the photooxidation of dimethyl disulfide |
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