Study of the formation of sulfuric acid aerosols
A unique flash-photolysis system was built and is now in operation. The development of tunable diode has made it possible to monitor the formation and/or removal of polyatomic molecules with highly selective infrared (IR) adsorption. The novel feature of the present system is the combination of internal multiple-reflection optics, which provide an effective path length of 1 km and a tunable diode laser for the selective and sensitive detection of chemical species. In addition, the large diameter (63.5 cm) of the cell permits the study of polyatomic molecules and radicals under conditions where wall reactions play no role. The flash-photolysis system is described, and preliminary results are given for the rate of the gas-phase reaction between SO/sub 3/ and H/sub 2/O. The gas-phase reaction is important in the formation of sulfuric acid aerosols. 4 references, 2 figures.
- Research Organization:
- Aerospace Corp., El Segundo, CA (USA). Aerophysics Lab.
- DOE Contract Number:
- AC03-80EV10407
- OSTI ID:
- 5984254
- Report Number(s):
- ATR-85(7899)-1; ON: DE85008102
- Country of Publication:
- United States
- Language:
- English
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& High-Temperature Chemistry
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COLLOIDS
DECOMPOSITION
DISPERSIONS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
KINETICS
LASERS
MONITORING
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS
REACTION KINETICS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLS
SULFUR COMPOUNDS
SULFUR OXIDES
SULFUR TRIOXIDE
SULFURIC ACID
SYNTHESIS
THERMOCHEMICAL PROCESSES
WATER