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RECORD NUMBER: 50 OF 174

OLS Field Name OLS Field Data
Main Title Effects of Chemical Speciation on the Mineralization of Organic Compounds by Microorganisms.
Author Madsen, E. L. ; Alexander, M. ;
CORP Author Cornell Univ., Ithaca, NY.;Environmental Research Lab., Gulf Breeze, FL.
Year Published 1985
Report Number EPA/600/J-85/147;
Stock Number PB86-101094
Additional Subjects Organic compounds ; Microorganisms ; Soil microbiology ; Oxalates ; Citrates ; EDTA ; Computer programs ; Reprints ; Acetic acid/nitrilo-tri ; Ethylenedinitrilo tetraacetates ; Mineralization
Holdings
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NTIS  PB86-101094 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 9p
Abstract
The mineralization of 1.0 to 100 ng/ml of four complexing compounds--oxalate, citrate, nitrilotriacetate (NTA), and ethylene diaminetetraacetate (EDTA)--was tested in media prepared according to equilibrium calculations by a computer program so that the H, Ca, Mg, Fe, or Al complex (chemical species) was predominant. The different activities of the bacterial isolates was not a result of toxicity of the complexes or the lack of availability of a nutrient element. NTA mineralization was not enhanced by additions of Ca to Beebe Lake water, but it was enhanced when Ca and an NTA- degrading inoculum was added to water from an oligotrophic lake. The data show that chemical speciation influences the mineralization of organic compounds by naturally occurring microbial communities and by individual bacterial populations.