Main Title |
Comparison of Microbial Transformation Rate Coefficients of Xenobiotic Chemicals between Field-Collected and Laboratory Microcosm Microbiota. |
Author |
Lewis, D. L. ;
Kellogg, R. B. ;
Holm, H. W. ;
|
CORP Author |
Environmental Research Lab., Athens, GA. ;Centers for Disease Control, Atlanta, GA. |
Year Published |
1984 |
Report Number |
EPA-600/D-84-049; |
Stock Number |
PB84-149749 |
Additional Subjects |
Microorganisms ;
Transformation rate ;
Toxicology ;
Xenobiotics
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB84-149749 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
28p |
Abstract |
Two second-order transformation rate coefficients--kb, based on total plate counts, and kA, based on periphyton-colonized surface areas--were used to compare xenobiotic chemical transformation by laboratory-developed (microcosm) and by field-collected microbiota. Similarity of transformer community structure in blended aufwuchs was indicated by kb values, and similarity of transformation rates per unit of periphyton-colonized surface area was indicated by kA values. Xenobiotic chemicals used for the comparisons were methyl marathion (MP), diethyl phthalate (DEP), and 2, 4-dichlorophenoxyacetic acid butoxyethyl ester (2, 4-DBE). Even though rate coefficients of each of the chemicals were similar among microcosm- and field-collected microbial samples, not all of the field collected samples showed MP or DEP transformation. MP transformation was suppressed by aqueous extracts of field-collected, algae-dominated aufwuchs and by low concentrations of DEP. Lack of DEP transformation appeared to have resulted from an absence of DEP-transforming bacteria in field-collected aufwuchs samples. |
Supplementary Notes |
Prepared in cooperation with Centers for Disease Control, Atlanta, GA. |
PUB Date Free Form |
Jan 84 |
Category Codes |
6T; 6M; 57Y; 57K |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
410423153 |
Origin |
NTIS |
Type |
CAT |