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OLS Field Name OLS Field Data
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. Government Printing Office,
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
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 660-3-75-035 Headquarters Library/Washington,DC 04/25/2011
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
EKAM  EPA-660/3-75-035 Region 4 Library/Atlanta,GA 01/17/1997
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 RPS EPA 660-3-75-035 repository copy AWBERC Library/Cincinnati,OH 10/17/2014
ELDD  EPA-660/3-75-035 CCTE/GLTED Library/Duluth,MN 11/03/2000
ESBD  EPA-660-3-75-035 CPHEA/PESD Library/Corvallis,OR 09/27/2017
NTIS  PB-246 251 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation vi, 41 pages : illustrations ; 27 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 "Report date June 1975." "Program element number 1EA077; ROAP number 10AKC; task number 006." Includes bibliographical references (pages 38-40).
Place Published Washington, DC
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
OCLC Rec Leader 02078cam 2200481Ii 45010