| Main Title |
Microbial transformation kinetics of xenobiotics in aquatic environment / |
| Author |
Rogers, J. E. ;
Li, S. W. ;
Felice, L. J.
|
| Other Authors |
|
| CORP Author |
Battelle Pacific Northwest Labs., Richland, WA.;Environmental Research Lab., Athens, GA. |
| Publisher |
U.S. Environmental Protection Agency, Environmental Research Laboratory, |
| Year Published |
1984 |
| Report Number |
EPA/600/3-84/043; EPA-R-810436 |
| Stock Number |
PB84-162866 |
| Subjects |
Microbiology--Environmental aspects--United States ;
Marine biology--Environmental aspects--United States
|
| Additional Subjects |
Reaction kinetics ;
Water pollution ;
Microbiology ;
Cresols ;
Naphthols ;
Quinolines ;
Concentration(Composition) ;
DBE 2-4 herbicide ;
Acetic acid/(butoxyethyl-ester)-dichlorolphenoxy
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB84-162866 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
105 pages ; 28 cm |
| Abstract |
The microbiological transformation rates of four organic compounds, the butoxy-ethylester of 2,4-dichlorophenoxyacetic acid (2,4-DBE), p-cresol, alpha-naphthol and quinoline, added to natural water samplers were examined in laboratory experiments. Graphical analysis of the data with first-order log plots indicated that transformation of these compounds occurred in two phases. The initial phase consisted of a lag period during which no decrease in compound concentration could be detected. Three of the compounds--p-cresol, alpha-naphthol and quinoline-- were only transformed following a lag phase. The transformation of 2,4-DBE occurred immediately upon addition of the compound to sample waters. The lag period was followed by a transformation phase where the detectable decrease in compound concentration could be described by a pseudo first-order rate equation and for which psuedo first-order constants could be determined. The variability in first-order constants for the different compounds ranged from a low of 13.6-fold for 2,4-DBE to a high of 185-fold for quinoline. Much of the variability could be accounted for in the range of average bacterial populations, measured during the transformation phase, that were used to calculate second-order rate constants and from the observation that second-order rate constants could be clustered into groups that were statistically different. The variability of second-order constants within these groups ranged from 1.18 to 36.14-fold, whereas the first-order constants ranged from 1.24 to 184.71-fold. |
| Notes |
Caption title. "March 1984." "EPA-600/3-84-043." Microfiche. |
| Place Published |
Athens, GA : |
| Corporate Au Added Ent |
Environmental Research Laboratory (Athens, Ga.) |
| PUB Date Free Form |
1984. |
| NTIS Prices |
PC A06/MF A01 |
| BIB Level |
m |
| Cataloging Source |
OCLC/T |
| OCLC Time Stamp |
20011009134132 |
| Language |
eng |
| Origin |
NTIS |
| Type |
MERGE |
| OCLC Rec Leader |
01189nam 2200301Ka 45020 |
