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INFLUENCE OF HUMIC SUBSTANCES ON PHOTOLYSIS OF NITROAROMATIC COMPOUNDS IN AQUEOUS SYSTEMS
Citation:
Simmons, M. AND R. Zepp. INFLUENCE OF HUMIC SUBSTANCES ON PHOTOLYSIS OF NITROAROMATIC COMPOUNDS IN AQUEOUS SYSTEMS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-86/182 (NTIS PB87116455), 1986.
Description:
Results are reported for kinetic studies of the photolysis of 19 nitroaromatic compounds in water. The results indicate that dissolved humic substances in natural waters enhance the sunlight-induced photodegradation rates of nitrobenzenes, nitrotoluenes, and nitroxylenes compared to rates observed in distilled water. The largest enhancements, ranging from 2 to 26-fold, were observed for nitroaromatics that are methylated ortho to the nitro group. Similar enhancement effects were observed for humic substances obtained from a variety of terrigenous sources, including humus in natural waters and humus extracted from soils.