Temperature dependence of the uptake coefficients of HNO sub 3 , HCl, and N sub 2 O sub 5 by water droplets

Journal Article · Thu Apr 19 04:00:00 EDT 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100371a009· OSTI ID:6899142

Van Doren, J M; Watson, L R; Davidovits, P ^[1]; Worsnop, D R; Zahniser, M S; Kolb, C E ^[2]

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1. Boston College, MA (USA)
2. Aerodyne Research Inc., Billerica, MA (USA)

The uptake of HNO{sub 3}, HCl, and N{sub 2}O{sub 5} by aqueous surfaces has been measured as a function of temperature over the range from 268 to 294 K. The experimental method employs a monodisperse train of droplets of 200-{mu}m diameter in a low-pressure flow reactor. The value of the uptake coefficient increases with decreasing temperature for each of these species. The similarity in the absolute values of {gamma} at all temperatures for HNO{sub 3}, HCl, and H{sub 2}O{sub 2} (previously reported) suggests that the uptake coefficient is a measure of the rate of physical solvation and is therefore identified as the mass accommodation coefficient. Therefore, the tropospheric cloud chemistry of these species will be determined by their solubility and aqueous-phase reactivity.

• OSTI ID: 6899142
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:8; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

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Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ATMOSPHERIC CHEMISTRY
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMISTRY
DATA
DATA ANALYSIS
DROPLETS
EXPERIMENTAL DATA
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
KINETICS
MEASURING INSTRUMENTS
MEASURING METHODS
NITRIC ACID
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PARTICLES
REACTION KINETICS
SOLUBILITY
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
UPTAKE
WATER