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RECORD NUMBER: 354 OF 501

OLS Field Name OLS Field Data
Main Title Photolysis of 3,4-Dichloroaniline in Natural Waters.
Author Miller, Glenn C. ; Zisook, Richard ; Zepp, Richard ;
CORP Author Environmental Research Lab., Athens, GA.
Year Published 1981
Report Number EPA/600/J-80-314;
Stock Number PB81-232134
Additional Subjects Photolysis ; Environmental surveys ; Chlorine organic compounds ; Sampling ; Solutions ; Photochemical reactions ; Concentration(Composition) ; Hydrolysis ; Herbicides ; Reaction kinetics ; Reprints ; Aniline/dichloro ; Benzene/tetrachloro-azo ; Procedures
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Status
NTIS  PB81-232134 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 6p
Abstract
Sunlight irradiation of 3,4-dichloroaniline (DCA) in natural water samples resulted in both direct and sensitized photoreactions. A procedure is described for separating the effects of competitive light absorption of the water from sensitized processes. Although the overall photolysis rates of DCA were slower in the natural waters than in distilled water (depth 6.2 cm), the rates in natural waters were faster than expected, on the basis of sunlight received by the DCA. Kinetic results were qualitatively the same when a commercial humic acid solution with similar light absorption characteristics was used. TCAB (3, 4, 3', 4'-tetrachloroacobenzene) was produced in two rice-field waters containing .0000061 to .00029 M DCA. The concentration of TCAB produced was greater in the more concentrated DCA solutions, although the yields were in no case greater than 1% of the reacted DCA. The chemical yield of TCAB was considerably lower in the commercial humic acid solutions than in the natural water samples. TCAB was not observed in distilled water.