Methanesulfonic acid and sulfuric acid Aerosol Formed through oxidation of reduced sulfur compounds in a humid environment

Non‐Marine Sources Contribute to Aerosol Methanesulfonate Over Coastal Seas

“…and aqueous‐phase reactions (Hoffmann et al., 2016), and different reaction pathways will lead to different product structures. Recent studies have found that aqueous‐phase oxidation is the main formation pathway of aerosol MSA (Hoffmann et al., 2016; Van Rooy et al., 2021; Zhu et al., 2006), and the cloud processing can greatly increase the yield of MSA. For example, significant positive relationship has been observed between [MSA] and particle liquid water content over the coastal city Hong Kong (Huang et al., 2015), and both [MSA] and MSA/nss‐SO 4 2– have been found much higher in cloud water than in submicron particles over the coastal areas of western United Sates (Sorooshian et al., 2015).…”

Implications for new particle formation in air of the use of monoethanolamine in carbon capture and storage

“…[15][16][17][18][19] In air, recognized fates of gas phase MEA to date include its reaction with O 3 and OH, [20][21][22][23][24] the formation of alkylaminium nitrate salts from its interaction with HNO 3 21,24 and acid-base reactions with gas phase and particulate sulfuric acid. 25,26 Methanesulfonic acid (CH 3 SO 3 H, MSA) is a strong acid formed along with SO 2 (a sulfuric acid precursor) in the oxidation of dimethyl sulfide (DMS) and dimethyl disulfide (DMDS) [27][28][29][30][31][32] which have a variety of sources both natural and anthropogenic. Therefore, it is not surprising that the oxidation product MSA is detected in the gas phase and in ambient particles worldwide.…”

“…Methanesulfonic acid (CH 3 SO 3 H, MSA) is a strong acid formed along with SO 2 (a sulfuric acid precursor) in the oxidation of dimethyl sulfide (DMS) and dimethyl disulfide (DMDS) 27–32 which have a variety of sources both natural and anthropogenic. 33–59 Therefore, it is not surprising that the oxidation product MSA is detected in the gas phase and in ambient particles worldwide.…”

Secondary aerosol formation from mixtures of marine volatile organic compounds in a potential aerosol mass oxidative flow reactor

“…Van Rooy et al oxidized DMS and dimethyl disulfide (DMDS) in a smog chamber with relative humidity ranging from 35 to 40%, using hydroxyl radical, nitrate radical, and O( 3 P) to examine the yields and formation mechanisms of sulfuric acid and MSA. 15 Using these conditions, they determined a higher humidity was necessary for the enhancement of MSA formation. Sulfate and MSA yields from DMS oxidation varied among experiments depending on the environmental conditions and overall ratio and type of gas phase species present.…”