The interaction of N2O5 with mineral dust: aerosol flow tube and Knudsen reactor studies

Interactive comment on “The interaction of N2O5 with mineral dust: aerosol flow tube and Knudsen reactor studies” by C. Wagner et al

Interaction of N2O5 with mineral dust

The interaction of N2O5 with mineral dust: aerosol flow tube and Knudsen reactor studies C. Wagner, F. Hanisch, N. Holmes, H. de Coninck, G. Schuster, and J. N. Crowley Max-Planck-Institut für Chemie, Mainz, Germany now at: Bayerisches Staatsministerium für Umwelt, Gesundheit und Verbraucherschutz, Rosenkavalierplatz 2, 81925 München, Germany now at: International Laboratory for Air Quality and...

Effect of humidity on nitric acid uptake to mineral dust aerosol particles

This study presents the first laboratory observation of HNO3 uptake by airborne mineral dust particles. The model aerosols were generated by dry dispersion of Arizona Test Dust (ATD), SiO2, and by nebulizing a saturated solution of calcium carbonate. The uptake of 13N-labeled gaseous nitric acid was observed in a flow reactor on the 0.2– 2 s reaction time scale at room temperature and atmospher...

The heterogeneous chemical kinetics of N2O5 on CaCO3 and other atmospheric mineral dust surrogates

Uptake experiments of N2O5 on several mineral dust powder samples were carried out under continuous molecular flow conditions at 298±2 K. At [N2O5]0=(4.0±1.0)×10 cm−3 we have found γ ss values ranging from (3.5±1.1)×10−2 for CaCO3 to (0.20±0.05) for Saharan Dust with γss decreasing as [N2O5]0 increased. The uptake coefficients reported in this work are to be regarded as upper limiting values ow...

Products and kinetics of N2O5 interaction on mineral dust

The heterogeneous chemical kinetics of N2O5 on CaCO3 and other atmospheric mineral dust surrogates F. Karagulian, C. Santschi, and M. J. Rossi Ecole Polytechnique Fédérale de Lausanne, Laboratoire de Pollution Atmosphérique et Sol (EPFL, LPAS), Bâtiment CH H5, Station 6, CH-1015 Lausanne, Switzerland Received: 7 September 2005 – Accepted: 12 September 2005 – Published: 24 October 2005 Correspon...