Measurement of gas/water uptake coefficients for trace gases active in the marine environment

Technical Report · Sat Feb 01 04:00:00 EST 1992

DOI:https://doi.org/10.2172/5626361· OSTI ID:5626361

Davidovits, P ^[1]; Worsnop, D W; Zahniser, M S; Kolb, C E ^[2]

---

1. Boston Coll., Chestnut Hill, MA (United States). Dept. of Chemistry
2. Aerodyne Research, Inc., Billerica, MA (United States). Center for Chemical and Environmental Physics

Ocean produced reduced sulfur compounds including dimethylsulfide (DMS), hydrogen sulfide (H{sub 2}S), carbon disulfide (CS{sub 2}), methyl mercaptan (CH{sub 3}CH) and carbonyl sulfide (OCS) deliver a sulfur burden to the atmosphere which is roughly equal to sulfur oxides produced by fossil fuel combustion. These species and their oxidation products dimethyl sulfoxide (DMSO), dimethyl sulfone (DMSO{sub 2}) and methane sulfonic acid (MSA) dominate aerosol and CCN production in clean marine air. Furthermore, oxidation of reduced sulfur species will be strongly influenced by NO{sub x}/O{sub 3} chemistry in marine atmospheres. The multiphase chemical processes for these species must be understood in order to study the evolving role of combustion produced sulfur oxides over the oceans. We have measured the chemical and physical parameters affecting the uptake of reduced sulfur compounds, their oxidation products, ozone, and nitrogen oxides by the ocean's surface, and marine clouds, fogs, and aerosols. These parameters include: gas/surface mass accommodation coefficients; physical and chemically modified (effective) Henry's law constants; and surface and liquid phase reaction constants. These parameters are critical to understanding both the interaction of gaseous trace species with cloud and fog droplets and the deposition of trace gaseous species to dew covered, fresh water and marine surfaces.

• Research Organization: Boston Coll., Chestnut Hill, MA (United States). Dept. of Chemistry
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-91ER61208
• OSTI ID: 5626361
• Report Number(s): DOE/ER/61208-1; ON: DE92010033
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
AEROSOLS
AIR-WATER INTERACTIONS
ATMOSPHERIC CHEMISTRY
CARBON COMPOUNDS
CARBON SULFIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CLOUDS
COLLOIDS
CONDENSATION NUCLEI
DISPERSIONS
DMSO
DOCUMENT TYPES
ENVIRONMENTAL TRANSPORT
FOG
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
MASS TRANSFER
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
OZONE
PROGRESS REPORT
SOLS
SULFIDES
SULFONES
SULFONIC ACIDS
SULFOXIDES
SULFUR COMPOUNDS
SULFUR CYCLE
THIOLS