Chamber studies of OH&thinsp;+&thinsp;dimethyl sulfoxide  and dimethyl disulfide: insights into the  dimethyl sulfide oxidation mechanism

Goss, Matthew B.; Kroll, Jesse H.

doi:https://doi.org/10.5194/acp-24-1299-2024

Articles | Volume 24, issue 2

https://doi.org/10.5194/acp-24-1299-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-24-1299-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 2

Research article

|

30 Jan 2024

Research article |

| 30 Jan 2024

Chamber studies of OH + dimethyl sulfoxide and dimethyl disulfide: insights into the dimethyl sulfide oxidation mechanism

Matthew B. Goss and Jesse H. Kroll

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Aug 2023	141	63	4	208
Sep 2023	161	65	6	232
Oct 2023	81	27	5	113
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Dec 2023	30	15	4	49
Jan 2024	178	37	4	219
Feb 2024	189	41	10	240
Mar 2024	92	27	1	120
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Cumulative views and downloads (calculated since 28 Aug 2023)

Month	HTML	PDF	XML	Total
Aug 2023	141	63	4	208
Sep 2023	161	65	6	232
Oct 2023	81	27	5	113
Nov 2023	23	8	0	31
Dec 2023	30	15	4	49
Jan 2024	178	37	4	219
Feb 2024	189	41	10	240
Mar 2024	92	27	1	120
Apr 2024	94	40	3	137
May 2024	104	36	2	142
Jun 2024	112	38	4	154
Jul 2024	61	24	3	88

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Short summary

The chemistry driving dimethyl sulfide (DMS) oxidation and subsequent sulfate particle formation in the atmosphere is poorly constrained. We oxidized two related compounds (dimethyl sulfoxide and dimethyl disulfide) in the laboratory under varied NO_x conditions and measured the gas- and particle-phase products. These results demonstrate that both the OH addition and OH abstraction pathways for DMS oxidation contribute to particle formation via mechanisms that do not involve the SO₂ intermediate.