||Photolysis of 3,4-Dichloroaniline in Natural Waters.
Miller, Glenn C. ;
Zisook, Richard ;
Zepp, Richard ;
||Environmental Research Lab., Athens, GA.
Environmental surveys ;
Chlorine organic compounds ;
Photochemical reactions ;
Reaction kinetics ;
||Some EPA libraries have a fiche copy filed under the call number shown.
||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.
||Pub. in Journal Agricultural and Food Chemistry, v28 n6 p1053-1056 1980. Prepared in cooperation with Nevada Univ., Reno.
|NTIS Title Notes
||Reprint: Photolysis of 3,4-Dichloroaniline in Natural Waters.
|PUB Date Free Form
||13B; 68E; 99
||PC A02/MF A01