Accommodation coefficients of ozone and sulfur dioxide: Their implications on SO/sub 2/ oxidation in cloud water

Conference · Thu May 01 00:00:00 EDT 1986

OSTI ID:6707245

Tang, I N; Lee, J H

Interfacial mass transfer of trace gases into aqueous phase is investigated in a UV absorption-stop flow apparatus. For the first time, the mass accommodation coefficients are determined for O/sub 3/ (5.3 x 10/sup -4/) and for SO/sub 2/ (>2 x 10/sup -2/). The results are incorporated into a simple model considering the coupled interfacial mass transfer and aqueous chemistry in cloud drops. It is shown that dissolution of O/sub 3/ into a drop is fast compared with its subsequent oxidation of dissolved SO/sub 2/. In addition, the conversion rate of S(IV) to S(VI) in aqueous drops by ozone reactions is not limited by interfacial resistance.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6707245
• Report Number(s): BNL-38985; CONF-860425-40; ON: DE87003484
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACID RAIN
ATMOSPHERIC CHEMISTRY
ATMOSPHERIC PRECIPITATIONS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CLOUDS
KINETICS
MATHEMATICAL MODELS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
OZONE
RAIN
REACTION KINETICS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES