BINARY NUCLEATION OF WATER SULFURIC-ACID SYSTEM - COMPARISON OF CLASSICAL-THEORIES WITH DIFFERENT H2SO4 SATURATION VAPOR-PRESSURES

被引:172
作者
KULMALA, M
LAAKSONEN, A
机构
[1] University of Helsinki, Department of Physics, SF-00170 Helsinki
关键词
D O I
10.1063/1.459519
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The classical hydrates interaction model and the classical condensation model have been compared in the temperature range 153.15-363.15 K. Various expressions for the kinetic part of nucleation rate have been examined. In the present study the saturation vapor pressure values of sulfuric acid given by Ayers et al. are extrapolated to lower (stratospheric) temperatures taking into account the temperature dependence of the enthalpy of vaporization. In our model calculations we have compared the effect of three different expressions for saturation vapor pressures. The nucleation rate will differ by several orders of magnitude (depending on temperature, water and acid activity) when using different theories and/or saturation vapor pressures. © 1990 American Institute of Physics.
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页码:696 / 701
页数:6
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