||Correlation of Microbial Degradation Rates with Chemical Structure.
Wolfe, N. Lee ;
Paris, Doris F. ;
Steen, William C. ;
Baughman, George L. ;
||Environmental Research Lab., Athens, GA.
Rates(Per time) ;
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Structure-reactivity relationships are established for the microbial degradation of selected organic compounds. Second-order microbial degradation rate constants determined in natural water samples for six compounds correlate with the second-order alkaline hydrolysis rate constants. Also, second-order microbial degradation rate constants for four phthalate esters obtained with organisms from sediment-water samples correlate with the second-order alkaline hydrolysis rate constants. Similar correlations are demonstrated for the rates of oxidation of substituted phenols by mixed microbial cultures isolated from soils and Hammett delta constants.