| Main Title |
Fate of Fenthion in Salt-Marsh Environments: 1. Factors Affecting Biotic and Abiotic Degradation Rates in Water and Sediment. |
| Author |
Cripe, C. R. ;
O'Neill, E. J. ;
Woods, M. E. ;
Gilliam, W. T. ;
Pritchard, P. H. ;
|
| CORP Author |
Technical Applications, Inc., Arlington, VA. ;Georgia State Univ., Atlanta.;Environmental Research Lab., Gulf Breeze, FL. |
| Publisher |
c1989 |
| Year Published |
1989 |
| Report Number |
EPA-68-03-3124 ;EPA-68-03-6265; EPA/600/J-89/160; |
| Stock Number |
PB90-129461 |
| Additional Subjects |
Biodeterioration ;
Swamps ;
Sediment ;
Tables(Data) ;
Graphs(Charts) ;
Rates(Per time) ;
Florida ;
Reprints ;
Fenthion
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB90-129461 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
14p |
| Abstract |
Fenthion (Baytex), an organophosphate insecticide, is frequently applied to salt-marsh environments to control mosquitoes. Shake-flask tests were used to study rates of abiotic and biotic degradation of fenthion and the environmental parameters that affect these rates. Water or water-sediment (500 mg dry weight/L) slurries from salt marshes located along the Northwest Florida Gulf Coast were used. Flasks contained 200 micrograms fenthion/L, and degradation rates were determined by following decrease of fenthion over time. Hydrolysis and biodegradation in water were relatively insignificant fate processes; fenthion disappeared from flasks containing water, formalin-sterilized water, or formalin-sterilized sediment very slowly (half-life > or = 2 weeks). The presence of nonsterile sediment resulted in a rapid exponential disappearance of fenthion (half-life > or = 3.8 days). Biodegradation was assumed since sterile sediment systems showed a much slower decrease of fenthion, and the production of polar compounds (hexane-unextractable) from radiolabeled fenthion was greater in the presence of sediment than sterilized sediment. |
| Supplementary Notes |
Pub. in Environmental Toxicology and Chemistry, v8 n9 p747-758 1989. See also PB90-129479. Prepared in cooperation with Georgia State Univ., Atlanta. Sponsored by Environmental Research Lab., Gulf Breeze, FL. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Fate of Fenthion in Salt-Marsh Environments: 1. Factors Affecting Biotic and Abiotic Degradation Rates in Water and Sediment. |
| Category Codes |
68E; 68D; 57K; 47D |
| NTIS Prices |
PC A03/MF A01 |
| Primary Description |
600/04 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
002517574 |
| Origin |
NTIS |
| Type |
CAT |
