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Organic mercury fungicides were applied to apple trees for many years for controlling fungus-borne diseases of the fruit such as scab. It was of interest to study the magnitude of residues of mercury remaining in such orchard soils long after fungicide use ended and possible downward migration of mercury. Soils were collected at increasing depths down to 12 inches from 4 apple orchards in Ontario,...
Burning municipal solid waste (MSW) with coal in power plants is becoming more common. Since used tires comprise an appreciable percentage of MSW some power plants are burning chipped tires with coal. Since the rubber in tires may contain up to 5% by weight of zinc as an accelerator activator, possible emission of zinc from such a power plant was studied. Staghorn sumac foliage was collected at...