Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Absence of polychlorinated dibenzodioxins and dibenzofurans after lactoperoxidase-catalyzed transformation of chlorophenols

Journal Article · · Bull. Environ. Contam. Toxicol.; (United States)
DOI:https://doi.org/10.1007/BF01609081· OSTI ID:5550411
;

Polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) have been detected in many species and environments their bioresistance and toxicity being of great concern. PCDDs and PCDFs, or the predioxins and -furans, are formed from chlorophenols (CPs) by burning and pyrolysis by arcing and by photolysis. PCDDs and PCDFs have also been found in emissions from automobiles, municipal waste incinerators, and nickel and copper smelting. Peroxidases (POs), a group of heme-proteins, are found in many organs and organisms. They are exceptional enzymes because of low substrate specificity and multiple reaction mechanisms. This enzyme-catalyzed free radical reaction resembles reactions in pyrolysis, arcing, and photolysis. Halogenated phenols are among the peroxidase substrates, and phenolic substrates have been found to yield dibenzodioxin- and dibenzofuran like products. The question then arose whether CP's in peroxidase-mediated reactions could yield chlorinated dibenzodioxins and dibenzofurans. Since no-one has yet reported a biological formation of PCDDs and PCDFs the authors have analyzed the rpdoct mixture from the lactoperoxidase-catalyzed oxidation of some chlorophenols.

Research Organization:
Univ. of Umea, Sweden
OSTI ID:
5550411
Journal Information:
Bull. Environ. Contam. Toxicol.; (United States), Journal Name: Bull. Environ. Contam. Toxicol.; (United States) Vol. 38:6; ISSN BECTA
Country of Publication:
United States
Language:
English

Similar Records

Copper-catalyzed dechlorination/hydrogenation of polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans, and other chlorinated aromatic compounds
Journal Article · Sat Oct 31 23:00:00 EST 1987 · Environ. Sci. Technol.; (United States) · OSTI ID:5002031
Air sampling of polychlorinated dibenzodioxins, polychlorinated dibenzofurans, and polychlorinated biphenyls, Arnold AFS, Tennessee. Final report
Technical Report · Wed Dec 31 23:00:00 EST 1986 · OSTI ID:6578863
Polychlorinated dibenzodioxins and polyschlorinated dibenzofurans in sewage sludges
Journal Article · Mon Dec 31 23:00:00 EST 1984 · Chemosphere; (United States) · OSTI ID:5112521

Related Subjects

560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AROMATICS
BENZOFURANS
BIOCHEMISTRY
CATTLE
CHEMISTRY
CHLORINATED AROMATIC HYDROCARBONS
CHROMATOGRAPHY
DIOXIN
DOMESTIC ANIMALS
ENZYMES
EXTRACTION
FURANS
HALOGENATED AROMATIC HYDROCARBONS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
LIQUID COLUMN CHROMATOGRAPHY
MAMMALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXIDOREDUCTASES
PEROXIDASES
PHENOLS
RUMINANTS
SEPARATION PROCESSES
SOLVENT EXTRACTION
VERTEBRATES