| Main Title |
Microbial-malathion interaction in artificial salt-marsh ecosystems : effect and degradation / |
| Author |
Bourquin, A. W.
|
| CORP Author |
Environmental Protection Agency, Gulf Breeze, Fla. Gulf Breeze Environmental Research Lab.;National Environmental Research Center, Corvallis, Oreg. |
| Publisher |
U.S. Environmental Protection Agency, Office of Research and Development, National Environmental Research Center, |
| Year Published |
1975 |
| Report Number |
EPA-660/3-75-035 |
| Stock Number |
PB-246 251 |
| OCLC Number |
01865411 |
| Subjects |
Malathion--Biodegradation ;
Salt marsh ecology
|
| Additional Subjects |
Aquatic microbiology ;
Ecology ;
Malathion ;
Swamps ;
Degradation ;
Pesticides ;
Bacteria ;
Salt water ;
Carboxylic acids ;
Esterases ;
Salinity ;
Temperature ;
Salt marshes ;
Ecosystems
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA 660-3-75-035 |
|
Headquarters Library/Washington,DC |
12/14/2013 |
| EJDD |
EPA-660/3-75-035 |
|
Env Science Center Library/Ft Meade,MD |
03/14/1997 |
| EKBD |
EPA-660/3-75-035 |
|
Research Triangle Park Library/RTP, NC |
03/29/1996 |
| EKCD |
EPA-660/3-75-035 |
|
CEMM/GEMMD Library/Gulf Breeze,FL |
02/08/2008 |
| ELBD ARCHIVE |
EPA 660-3-75-035 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ELBD RPS |
EPA 660-3-75-035 |
repository copy |
AWBERC Library/Cincinnati,OH |
10/17/2014 |
| NTIS |
PB-246 251 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
vi, 41 pages : illustrations, figures, tables ; 28 cm |
| Abstract |
Malathion is rapidly degraded in vitro by salt-marsh bacteria to malathion-monocarboxylic acid, malathion-dicarboxylic acid and various phosphothionates as a result of carboxyesterase cleavage. In addition, some expected phosphatase activity produces desmethyl-malathion, phosphotionates, 4-carbon dicarboxylic acids, and corresponding ethyl esters. In a simulated salt-marsh environment, malathion is degraded by the indigenous bacterial community. Numbers of bacterial capable of degrading malathion in the presence of additional nutrients increase in the sediments with increasing frequency of application and in the water column with the increasing level of treatment. Numbers of bacteria which degrade malathion as a sole carbon source are linked to the level of treatment in sediments and the frequency of treatment in the water column; however, these bacteria do not appear to play a significant role in the dissipation of malathion. The disappearance of malathion in the salt-marsh environment is influenced by both chemical and biological degradation; however, at temperatures below 26C and salinities below 20 parts per thousand by weight, chemical mechanisms appear to be of less importance than biological degradation. |
| Notes |
"June 1975." U.S. Environmental Agency Program No. Contract Number: Element Number 1EA077; ROAP Number 10AKC, Task Number 006. Includes bibliographical references (pages 38-40). |
| Place Published |
Washington, DC |
| Corporate Au Added Ent |
National Environmental Research Center (Corvallis, Or.),; United States. Environmental Protection Agency. Office of Research and Development.; Environmental Research Laboratory (Gulf Breese, Fla.). |
| Title Ser Add Ent |
Research reporting series. Ecological research ; EPA-660/3-75-035. |
| PUB Date Free Form |
1975 |
| Series Title Traced |
Ecological research series ; EPA-660/3-75-035 |
| Series Title Untraced |
Ecological research series ; EPA-660/3-75-035 |
| NTIS Prices |
PC A04/MF A01 |
| BIB Level |
m |
| Medium |
unmediated |
| Content |
text |
| Carrier |
volume |
| Cataloging Source |
OCLC/T |
| OCLC Time Stamp |
20170920055847 |
| Language |
eng |
| SUDOCS Number |
EP 1.23:660/3-75-035 |
| Origin |
OCLC |
| Type |
MERGE |
| OCLC Rec Leader |
02078cam 2200481Ii 45010 |
