Mass accommodation coefficients on aqueous droplets have been measured
for two substituted aromatic compounds using a droplet train apparatu
s and detection in the gas phase by laser induced fluorescence. Values
of (1.8+/-0.5) x 10(-2) and (2.7+/-0.5) x 10(-2) have been obtained a
t 283 K for aniline and phenol, respectively. Mass accommodation of to
luene was below the limit of detection of 1.0 x 10(-3). Phenol and ani
line are chosen as models for polar and oxygenated species formed as C
-y intermediates in the oxidation of less soluble aromatic hydrocarbon
precursors. The measurements indicate that mass accommodation of such
species could be a significant pathway for the removal of tropospheri
c hydrocarbons.