Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Degradation of Malathion by Salt-Marsh Microorganisms.
Author Bourquin., A. W. ;
CORP Author Environmental Research Lab., Gulf Breeze, Fla.
Year Published 1976
Report Number EPA/600/J-77/020 ;Contrib-291;
Stock Number PB-268 571
Additional Subjects Malathion ; Bacteria ; Biodeterioration ; Marshes ; Carboxylic acids ; Nutrients ; Carbon ; Acid phosphatases ; Microorganisms ; Insecticides ; Experiments ; Gas chromatography ; Infrared spectroscopy ; Thin layer chromatography ; Sea water ; Water pollution ; Chemical analysis ; Reprints ; Salt marshes ; Energy sources
Library Call Number Additional Info Location Last
NTIS  PB-268 571 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 8p
Numerous bacteria from a salt-marsh environment are capable of degrading malathion, an organophosphate insecticide, when supplied with additional nutrients as energy and carbon sources. Seven isolates exhibited ability (48-90%) to degrade malathion as a sole carbon source. Gas and thin-layer chromatography and infrared spectroscopy confirmed malathion to be degraded via malathion-monocarboxylic acid to the dicarboxylic acid and then to various phosphothionates. These techniques also identified desmethyl-malathion, phosphorothionates, and four-carbon dicarboxylic acids as degradation products formed as a result of phosphatase activity.