Formation of secondary sulfuric acid aerosols in urban atmosphere
作者:
C. S. Kiang,
P. Middleton,
期刊:
Geophysical Research Letters
(WILEY Available online 1977)
卷期:
Volume 4,
issue 1
页码: 17-20
ISSN:0094-8276
年代: 1977
DOI:10.1029/GL004i001p00017
数据来源: WILEY
摘要:
A numerical kinetic aerosol model is utilized to study conditions under which secondary sulfuric acid aerosol can be formed in an urban atmosphere. This model incorporates the mechanisms of photochemical reactions, heteromolecular nucleation, heteromolecular condensation and thermal coagulation. Various atmospheric conditions are used to study the effects of production rate of sulfuric acid gaseous molecules, relative humidity, temperature, initial particle size distribution and kinetic coefficient for nucleation and condensation growth on the formation of new secondary sulfuric acid aerosol. Our model calculations show that the rate‐limiting factor for the formation of these secondary aerosols is the amount of the sulfuric acid gaseous molecules available in the atmospher
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