Kinetic studies of simulated polluted atmospheres. Final report January 1976-April 1979

Technical Report · Tue Jan 01 00:00:00 EST 1980

OSTI ID:6641620

Calvert, J G

The kinetics and reaction mechanisms of several important atmospheric contaminants - SO2, formaldehyde, nitrous acid, and the nitrosamines - were assessed to help quantify some key aspects of the chemistry of polluted atmospheres. The reactions and lifetimes of excited sulfur dioxide with various atmospheric components including hydroxyl, hydroperoxy, and methylperoxy radicals were studied. These data and other published rate data were reviewed and evaluated. The photolysis of formaldehyde was investigated as a major source of hydroperoxyl radicals, and a quantitative evaluation made of its apparent first order rate constants at various solar zenith angles. The absolute extinction coefficients for nitrous acid were determined, and estimates made of the rates of hydroxyl radical generation in the troposphere by photolysis of nitrous acid. Long path Fourier transform infrared spectroscopy was used to help evaluate the potential for nitrosamine formation in the polluted atmosphere.

• Research Organization: Ohio State Univ., Columbus (USA). Dept. of Chemistry
• OSTI ID: 6641620
• Report Number(s): PB-80-176787
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
PHOTOCHEMICAL REACTIONS
AMINES
FLUORESCENCE
FORMALDEHYDE
INFRARED SPECTRA
MATHEMATICAL MODELS
NITROGEN OXIDES
NITROSO COMPOUNDS
OXIDATION
REACTION KINETICS
SULFUR DIOXIDE
TROPOSPHERE
ALDEHYDES
CHALCOGENIDES
CHEMICAL REACTIONS
EARTH ATMOSPHERE
KINETICS
LUMINESCENCE
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
SPECTRA
SULFUR COMPOUNDS
SULFUR OXIDES
500100* - Environment
Atmospheric- Basic Studies- (-1989)