TY - JOUR
T1 - CCN activation of oxalic and malonic acid test aerosols with the University of Vienna cloud condensation nuclei counter
AU - Giebl, Heinrich
AU - Berner, Axel
AU - Reischl, Georg
AU - Puxbaum, Hans
AU - Kasper-Giebl, Anne
AU - Hitzenberger, Regina
N1 - DOI: 10.1016/S0021-8502(02)00115-5
Coden: JALSB
Affiliations: Institute for Experimental Physics, University of Vienna, Boltzmanng. 5, A-1090 Vienna, Austria; Institute of Analytical Chemistry, University of Technology of Vienna, Getreidemarkt 9, A-1060 Vienna, Austria
Adressen: Hitzenberger, R.; Institute for Experimental Physics; University of Vienna; Boltzmanng. 5 A-1090 Vienna, Austria; email: [email protected]
Source-File: ExpPhysScopus.csv
Import aus Scopus: 2-s2.0-0036852759
Importdatum: 14.02.2007 17:36:13
07.11.2007: Datenanforderung 1968 (Import Sachbearbeiter)
PY - 2002
Y1 - 2002
N2 - The cloud droplet activation of monodisperse laboratory aerosols consisting of single organic and inorganic substances as well as a mixture of several substances was investigated using the University of Vienna cloud condensation nuclei counter (CCNC). The CCNC operates on the principle of a static thermal diffusion chamber. Water vapour supersaturations can be set in the range from 0.1% to 2%. Aqueous solutions of oxalic acid and malonic acid as well as solutions of inorganic compounds (NaCl and (NH4)2SO4) were nebulized in a Collison atomizer and then passed through a closed-loop differential mobility particle spectrometer to produce monodispersed particles. An internally mixed aerosol consisting of ammonium sulphate, oxalic acid and malonic acid with relative concentrations resembling those found in cloud water at a mountain station [Lošflund, Kasper-Giebl, Schuster, Giebl, Hitzenberger, Reischl et al. (2002) Atmos. Environ. 36, 1553] was also investigated for cloud condensation nuclei (CCN) activation. All these particles were activated at supersaturations expected from Košhler theory. Oxalic and malonic acid particles are therefore expected to be good atmospheric CCN both as pure particles and as internally mixed particles containing other chemical compounds. © 2002 Elsevier Science Ltd. All rights reserved.
AB - The cloud droplet activation of monodisperse laboratory aerosols consisting of single organic and inorganic substances as well as a mixture of several substances was investigated using the University of Vienna cloud condensation nuclei counter (CCNC). The CCNC operates on the principle of a static thermal diffusion chamber. Water vapour supersaturations can be set in the range from 0.1% to 2%. Aqueous solutions of oxalic acid and malonic acid as well as solutions of inorganic compounds (NaCl and (NH4)2SO4) were nebulized in a Collison atomizer and then passed through a closed-loop differential mobility particle spectrometer to produce monodispersed particles. An internally mixed aerosol consisting of ammonium sulphate, oxalic acid and malonic acid with relative concentrations resembling those found in cloud water at a mountain station [Lošflund, Kasper-Giebl, Schuster, Giebl, Hitzenberger, Reischl et al. (2002) Atmos. Environ. 36, 1553] was also investigated for cloud condensation nuclei (CCN) activation. All these particles were activated at supersaturations expected from Košhler theory. Oxalic and malonic acid particles are therefore expected to be good atmospheric CCN both as pure particles and as internally mixed particles containing other chemical compounds. © 2002 Elsevier Science Ltd. All rights reserved.
U2 - 10.1016/S0021-8502(02)00115-5
DO - 10.1016/S0021-8502(02)00115-5
M3 - Article
SN - 0021-8502
VL - 33
SP - 1623
EP - 1634
JO - Journal of Aerosol Science
JF - Journal of Aerosol Science
IS - 12
ER -