Particle analysis of an urban aerosol using high spatial resolution techniques

A single-particle scintillation counter-analyser mounted in a light aircraft has been used to obtain information on the Na and K content of the particulates in the atmosphere of Sydney, Australia. A spatial resolution of 1 km is obtained along a 250-km flight path. Total mass loadings and loadings a...

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Bibliographic Details
Published in:Atmospheric environment 1985, Vol.19 (11), p.1905-1910
Main Author: Clark, N.J.
Format: Article
Language:English
Subjects:
Applied sciences
Atmospheric pollution
Composition of individual particle
Dispersed sources and other
Exact sciences and technology
particle scintillation spectrometer
Pollution
Pollution sources. Measurement results
potassium-containing particle
sodium-containing particle
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Summary:A single-particle scintillation counter-analyser mounted in a light aircraft has been used to obtain information on the Na and K content of the particulates in the atmosphere of Sydney, Australia. A spatial resolution of 1 km is obtained along a 250-km flight path. Total mass loadings and loadings as a function of particle size for Na and K agree with published data for filter samples collected on the ground. Na/K ratios for individual plumes indicate soil dust and combustion are the principal contributors to urban haze detected by this method. The large sea-salt contribution is readily identified and significant sources of non-marine Na exist, particularly in the smaller size ranges. The results suggest that sea-salt contribution to the Na measured in coastal city aerosols may be overestimated.
ISSN:0004-6981
1352-2310
DOI:10.1016/0004-6981(85)90016-2