Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Sequential Reductive Dehalogenation of Chloroanilines by Microorganisms from a Methanogenic Aquifer.
Author Kuhn, E. P. ; Suflita, J. M. ;
CORP Author Oklahoma Univ., Norman. Dept. of Botany and Microbiology.;Robert S. Kerr Environmental Research Lab., Ada, OK.
Publisher c1989
Year Published 1989
Report Number EPA/600/J-89/103;
Stock Number PB90-117219
Additional Subjects Water pollution ; Microorganisms ; Aquifers ; Soil microbiology ; Waste disposal ; Pesticides ; Ground water ; Surface waters ; Chromatographic analysis ; Mass spectroscopy ; Aerobic processes ; Reprints ; Land pollution ; Aniline/chloro ; Methane bacteria ; Dehalogenation ; Clean-up operations ; Chemical reaction mechanisms
Library Call Number Additional Info Location Last
NTIS  PB90-117219 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 03/10/1990
Collation 7p
Chloroaniline-based compounds are widely used chemicals and important contaminants of aquatic and terrestrial environments. The authors have found that chloroanilines can be biologically dehalogenated in polluted aquifers when methanogenic, but not sulfate-reducing conditions prevail. The halogens are replaced by protons in a series of reductive steps catalyzed by microorganisms. The sequential release of halogens from the para and ortho position of 2,3,4,5-tetrachloroaniline (2,3,4,5-tetraCA) resulted in the formation of 2,3,5-trichloroaniline (2,3,5-triCA) and eventually 3,5-dichloroaniline (3,5-diCA). Similarly, when 3,4-diCA was used as a parent substrate, it was transformed to 3-chloro-aniline (3-CA). Metabolites and end products were identified by their chromatographic mobility and their mass spectral fragmentation pattern. The reaction helps suggest novel bioremediation approaches for aquifers and other environments contaminated with these chemicals. (Copyright (c) 1989 American Chemical Society.)