Abstract
This study was designed to evaluate the total emissions and the distribution of concentration with particle size for cadmium and lead in the particulate effluent from a coal-fired boiler. Particular attention was given to the concentration and amounts of these materials in the respirable size range (<5 microns). Particulates were collected by means of a sampling train which consisted of a Los Alamos Scientific Laboratory miniature cyclone, followed by a six-stage Andersen sampler, followed by an inline membrane filter. After collection, the various size ranges of particulates were analyzed quantitatively for cadmium and lead by using atomic absorption spectroscopy. These analyses showed that ithe largest amounts of cadmium and lead were in the respirable size ranges. An increase in concentration with decreasing particle size was also shown for lead and cadmium.
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