T. Imamura et al., UPTAKE OF NO3 ON WATER SOLUTIONS - RATE COEFFICIENTS FOR REACTIONS OFNO3 WITH CLOUD-WATER CONSTITUENTS, The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, 101(12), 1997, pp. 2316-2322
The reactive uptake coefficients, gamma, of NO3 onto aqueous solutions
containing ions X(-) = HSO3-, SO32-, HCOO-, CH3COO-, and OH- were mea
sured at 273 +/- 1 K using a wetted-wall flow tube reactor. The values
of (HD)-D-2/k (H = Henry's law coefficient, D-/ = diffusion coefficie
nt in the liquid phase, and k = second-order rate coefficient for the
liquid phase reactions of NO3 with X(-)) for the reactive uptake of NO
3 were determined by measuring gamma as a function of liquid phase rea
ctant concentration. The linear correlation between the measured rate
coefficients and those for corresponding SO4- reactions, and the depen
dence of the measured rate coefficients on the redox potential of the
X/X(-) pair suggest that the NO3 + X(-) reactions proceed by electron
transfer. The atmospheric implications of these findings are briefly d
iscussed.