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RECORD NUMBER: 26 OF 27

OLS Field Name OLS Field Data
Main Title Transport and Fate of Diethyl Phthalate in Aquatic Ecosystems.
Author Lewis, D. L. ; Holm, H. W. ; Kollig, H. P. ; Hall, T. L. ;
CORP Author Environmental Research Lab., Athens, GA. ;Technology Applications, Inc., Athens, GA.
Year Published 1984
Report Number EPA/600/J-84/223;
Stock Number PB85-160877
Additional Subjects Water pollution ; Toxicology ; Reaction kinetics ; Ecology ; Hydrolysis ; Photolysis ; Sorption ; Microorganisms ; Reprints ; Phthalic acid/(Diethyl-ester) ; Ecosystems ; Path of pollutants
Holdings
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NTIS  PB85-160877 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 11p
Abstract
Sorption, alkaline hydrolysis, photolysis and microbial transformation of diethyl phthalate (DEP) were studied in a large laboratory aquatic ecosystem composed of a series of reactor tanks. Microbial transformation accounted for 95 to 99% of the rapid loss of DEP from water. First-order rate coefficients for the loss of DEP, except in reactor tanks depleted of inorganic nutrients, were statistically constant among diverse chemical and microbial environments, suggesting a constant transformation rate per unit of colonized surface area. The diversities of reactor tank environments were substantiated by large ranges in the dissolved organic carbon, nitrogen, phosphorus, chlorophyll, ATP and biomass measurements. Microbial transformation of DEP resulted specifically from bacterial activity, most of which was associated with aquatic microbial growth (aufwuchs) attached to submerged surfaces or suspended in streamers or mats.