Main Title |
Multiphasic Kinetics for Transformation of Methyl Parathion by 'Flavobacterium' Species. |
Author |
Lewis, D. L. ;
Hodson, R. E. ;
Freeman, L. F. ;
|
CORP Author |
Environmental Research Lab., Athens, GA. ;Georgia Univ., Athens. |
Year Published |
1985 |
Report Number |
EPA/600/J-85/234; |
Stock Number |
PB86-131984 |
Additional Subjects |
Flavobacterium ;
Insecticides ;
Bacteria ;
Reprints ;
Methyl parathion
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB86-131984 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
6p |
Abstract |
Transformation rates of an insecticide, methyl parathion, in pure cultures of Flavobacterium sp. followed multiphasic kinetics involving at least two systems (I and II). System I was a high-affinity, low-capacity system, and System II was a low-affinity, high capacity system. Data from rate experiments suggested that metabolites formed via system II inhibited system I such that only one system operated at a time. System I operated at approximately 20 micrograms per liter and less; system II operated at approximately 4 mg per liter and less. These results show that xenobiotic chemicals, like naturally occurring substrates, can be transformed via multiple uptake and transformation systems even by a pure culture. Furthermore, computer simulation models of pollutant transformation rates based on kinetic constants determined in this study show that large errors can occur in predicted rates when the multiphasicity of kinetics is neglected. |
Supplementary Notes |
Prepared in cooperation with Georgia Univ., Athens. |
Availability Notes |
Pub. in Applied and Environmental Microbiology, v50 n3 p553-557 Sep 85. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Multiphasic Kinetics for Transformation of Methyl Parathion by 'Flavobacterium' Species. |
PUB Date Free Form |
c1985 |
Category Codes |
6M; 57K |
NTIS Prices |
Not available NTIS |
Primary Description |
600/01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
605824466 |
Origin |
NTIS |
Type |
CAT |