Absolute Dampfdruckmessungen ueber ternaeren und quaternaeren unterkuehlten Fluessigkeiten zum besseren Verstaendnis der Zusammensetzung von polaren stratosphaerischen Wolken sowie die Untersuchung von chlor- und bromaktivierenden Reaktionen auf entsprechenden Oberflaechen Abschlussbericht

Abstract

The solubility of HBr and HCl in H_2SO_4/H_2O and of HBr in HNO_3/H_2SO_4/H_2O mixtures was determined by measuring the equilibrium vapour pressure for stratospheric temperatures and acid concentrations. The solubility of both gases decrease with increasing acid concentration and temperature. In the case of the quaternary mixtures the vapour pressure of HNO_3 was also determined. The data set which is now available for the solubility of HBr and HCl in H_2SO_4/H_2O and HBr in HNO_3/H_2SO_4/H_2O may be used to test the validity of existing models and to further improve the models. In addition, the simple parameterisation of the solubility should be used for modelling the effect of heterogeneous reactions on atmospheric ozone destruction. (orig.)SIGLEAvailable from TIB Hannover: DtF QN1(84,9) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung und Forschung (BMBF), Bonn (Germany)DEGerman