Dynamical behaviour of polydisperse aerosol particles in a smog chamber

被引：0

作者：

Hoffman, J. ^{[1
]}

Bunz, H. ^{[1
]}

Schock, W. ^{[1
]}

机构：

[1] Laboratorium fur Aerosolphysik und, Filtertechnik 1, Karlsruhe, Germany

来源：

Journal of Aerosol Science | 1992年 / 23卷 / SUPPL 1期

关键词：

Nitrate salts - Polydisperse aerosol particles - Smog chambers - Software package NACHE;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Aerosol particles containing different salt species (NaCl and Nitrate Salts) were produced and injected into a smog chamber of 3.7 m3volume. The chamber is the thermally isolated and temperature differences below 0.5 K can be obtained in the entire volume. This allows to maintain stable thermodynamic conditions for small droplets beyond the point of deliquescence (up to relative humidities of about 97%) of the salt particles. Most of the measurements described here were made at relative humidities below the point of deliquescence. Changes in particle concentrations and changes in particle size spectra due to coagulation and other physical processes were measured using an optical particle counter and a differential mobility particle sizer. The measurements were compared to model calculations using the NACHE code. In the code in addition to the mechanical processes the uptake of water is modelled as a function of relative humidity, particle composition and particle size distribution.

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