Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Use of a Simple Experimental Device to Study Water Pollution in Situ: Comparative Effects of Three Anti-Petroleum Emulsive Agents (Utilisation d'un Dispositif Experimental Simple pour L'Etude de la Pollution des Eaux in Situ: Effets Compares de Trois Agents Emulsionnants Anti-Petrole).
Author Lacaze., J. C. ;
CORP Author Environmental Protection Agency, Research Triangle Park, N.C. Translation Services Section.
Year Published 1974
Report Number EPA-TR-87-75;
Stock Number PB-237 784-T
Additional Subjects Marine biology ; Water pollution ; Emulsifying agents ; Oils ; Oysters ; Translations ; France ; Water pollution control ; Oil pollution
Library Call Number Additional Info Location Last
NTIS  PB-237 784-T Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 23p
By establishing in situ experimental ecosystems, it was possible to conduct pollution research under actual conditions. The experiments were carried out in an oyster culture basin of a lagoon in the Sables d'Olonne region by using devices to section off the water into a number of similar natural environmental compartments to be used for pollutant treatments and controls. The product Corexit produced only weak and temporary changes. Sefoil acted as a fertilizer, provoking a rapid increase in photosynthesis and chlorophyll a concentration; this was followed by considerable growth in the zooplankton, particularly the copepods, which resulted in the disappearance of the phytoplankton by the end of the experiment. The surface-active fraction of the third product used, Gamosol, caused an almost complete inhibition of photosynthesis during the entire 15 days of the experiment.