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RECORD NUMBER: 7 OF 10

Main Title Quantitative Assessment of the Effects of Metals on Microbial Degradation of Organic Chemicals.
Author Said, W. A. ; Lewis, D. L. ;
CORP Author Environmental Research Lab., Athens, GA. ;Technology Applications, Inc., Athens, GA. ;Georgia Univ., Athens. Faculty of Ecology.
Publisher c1991
Year Published 1991
Report Number EPA/600/J-91/217;
Stock Number PB92-101385
Additional Subjects Microbial degradation ; Water pollution ; Organic compounds ; Metals ; Biodeterioration ; Reaction kinetics ; Risk assessment ; Sediments ; Sediment-water interfaces ; Lakes ; Aquatic microorganisms ; Biochemistry ; Concentration(Composition) ; Inhibitors ; Reprints ; Acetic acid/dichloro-phenoxy-(methyl-ester)
Holdings
Library Call Number Additional Info Location Last
Modified		 Checkout
Status
NTIS  PB92-101385 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p
Abstract
Biodegradation inhibition of a benchmark chemical, 2,4-dichloro-phenoxyacetic acid methyl ester (2,4-DME), was used to quantify the inhibitory effects of heavy metals on aerobic microbial degradation rates of organic chemicals. The procedure used lake sediments and aufwuchs (floating mats) collected in the field or from laboratory microcosms. Effects of CuCl2, HgCl2, ZnCl2, Cd(NO3)2, and Cr(NO3)3 at initial concentrations ranging from 0.3 microM to 73 mM (approximately 0.1 to 10,000 mg/liter) were investigated. In general, such metallic compounds appeared to be considerably more inhibitory to the biodegradation of an organic chemical than high concentrations of microbially toxic compounds studied previously. Effects of various metal concentrations were evaluated. (Copyright (c) 1991 American Society for Microbiology.)