Environmental exposure assessment models and laboratory procedures for predicting the pathways of potentially harmful chemicals in freshwater environments were described in Part I of this report (PB-274 548). Procedures were developed for measuring the rates of volatilization, photolysis, oxidation, hydrolysis, and biotransformations as well as the sorption partition coefficients on natural sediments and on a mixture of four bacteria. The results were integrated with a simple computer model to predict the pathways of chemicals in ponds, rivers, and lakes. This second part of the project report describes the successful application of these procedures to 11 chemicals of environmental interest. The chemicals were p-cresol, benz(a)anthracene, benzo(a)pyrene, quinoline, benzo(f)quinoline, 9H-carbazole, 7H-dibenzo(c,g)carbazole, benzo(b)thiopene, and dibenzothiophene which might be found in the effluents of plants using or processing fossil fuels, and methyl parathion and mirex, which are agricultural pesticides.

"May 1978." "Contract No. 68-03-2227." "Project Officer George Baughman, Environmental Processes Branch." Includes bibliographical references (pages 316-332).

pt. 1. Background and experimental procedures -- pt. 2. Laboratory studies.