Fly ash concentrations in Philadelphia aerosol determined by electron microscopy

In a study to differentiate between coal-fly ash and minerals in the atmosphere, samples were collected on Nuclepore filters in dichotomous samplers and analyzed by scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry. The samples included ambient aerosol from two sites, resus...

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Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 1988-02, Vol.37 (3-4), p.389-405
Main Authors: MAMANE, Y, DZUBAY, T. G
Format: Article
Language:English
Subjects:
Air pollution caused by fuel industries
Analysis methods
Applied sciences
Atmospheric pollution
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Metering. Control
Pollution
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Summary:In a study to differentiate between coal-fly ash and minerals in the atmosphere, samples were collected on Nuclepore filters in dichotomous samplers and analyzed by scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry. The samples included ambient aerosol from two sites, resuspended soil, and emissions from coal- and oil-fired power plants in the Philadelphia area. Fly ash and minerals were identified by observing high abundances of Al, Si, K, Ca, Ti, and Fe in individual particles, and their mass concentrations were estimated from measured dimensions and an assumed density. Fly ash was distinguished from minerals by morphology. Sulfate was the major component of the fine fraction.
ISSN:0049-6979
1573-2932
DOI:10.1007/BF00192949