Measurement of the Henry's law coefficient and first order loss rate of PAN in n-octanol

Details Measurement of the Henry's law coefficient and first order loss rate of PAN in n-octanol Measurement of the Henry's law coefficient and first order loss rate of PAN in n-octanol

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3208803r&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 8, CiteID L08803

Physics

Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801, 4906), Atmospheric Composition And Structure: Pollution: Urban And Regional (0305, 0478, 4251), Atmospheric Composition And Structure: Troposphere: Composition And Chemistry, Atmospheric Composition And Structure: Chemical Kinetic And Photochemical Properties, Atmospheric Composition And Structure: Troposphere: Constituent Transport And Chemistry

Scientific paper

The Henry's Law solubility and first order loss rates of PAN (peroxyacetic nitric anhydride, CH3C(O)OONO2) in a model non-polar solvent, n-octanol, were measured for a range of temperatures pertinent to the lower troposphere (273-298 °K). The solubility was found to be factors of 6 to 12 higher than those measured previously for pure water, ranging between 110 +/- 7.5 M/atm at 273°K and 34 +/- 1.7 M/atm at 298°K. The loss rates were found to vary from below 0.5 × 10-5 sec-1 at 273°K to 5.2 +/- 1.9 × 10-5 sec-1 at 298°K. Several simple approaches were used to estimate that the uptake of PAN on organic aerosol has a negligible impact on ambient PAN concentrations.

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