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The influence of the ionic activity on the formation of ClNO2 from the uptake of N2O5 on salt solutions

 
: Behnke, W.; Frenzel, A.; George, C.; Scheer, V.; Zetzsch, C.

Mirabel, P. ; European Commission, Directorate-General for Science, Research and Development:
Homogeneous and heterogeneous chemical processes in the troposphere : Strasbourg, 25 and 26 September 1995
Luxembourg: Office for Official Publications of the European Communities, 1996 (Air pollution research report 57)
ISBN: 92-827-6147-9
pp.13-17
Joint EC/EUROTRAC Workshop LACTOZ/HALIPP <1995>
English
Conference Paper
Fraunhofer ITA ( ITEM) ()
aerosol; air pollution; atmospheric chemistry; chlorine compound; chlorine dioxide; nitrogen compound; nitrogen pentoxide; photochemical degradation; photochemistry; physical chemistry; sea spray; theoretical chemistry

Abstract
N2O5 decomposes after the absorption on wet aerosols or solutions to NO2+ and NO3- (...) NO2+ reacts with water producing HNO3 (reaction 2a) and, in the presence of NaCl producing ClNO2 (reaction 2b, which decomposes to NO2+ and Cl- slowly (reaction 3). At 18 C and very low ionic strength we evaluate k2b/k2a = 1160+/-40 ... Adding NaNO3 all variations of this ratio can be explained by the influence of the ionic strength. Adding Na2SO4 we had to include a third reactio patway (2c) with k2c/k2a = 1200+/-70 at very low ionic strength.

: http://publica.fraunhofer.de/documents/PX-18533.html