Record Display for the EPA National Library Catalog


Main Title Microbial Bioconcentration of Organic Pollutants from Aquatic Systems - A Critical Review.
Author Baughman, George L. ; Paris, Doris F. ;
CORP Author Environmental Research Lab., Athens, GA.
Year Published 1981
Report Number EPA-600/J-81-126;
Stock Number PB81-192114
Additional Subjects Microorganisms ; Water pollution ; Aquatic animals ; Food chain ; Concentration(Composition) ; Reprints ; Bioaccumulation
Library Call Number Additional Info Location Last
NTIS  PB81-192114 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 26p
Bioconcentration of pollutants by aquatic microorganisms has been of interest to environmental scientists for several years because of the position of these organisms in the food chain. Also, similarities between accumulation by microbial species and higher organisms are of interest from a mechanistic viewpoint. Thus, an exhaustive review of the literature has been conducted and the state of knowledge critically evaluated with respect to the kinetics, mechanisms, and magnitude of accumulation. Particular emphasis in the evaluation is directed toward demonstrating that most available data are consistent with a simple mechanism that is 'passive' rather than active in the biological sense. Further, it is shown that reliable measurements of the extent of accumulation must take into account both time and biomass concentration. Methods currently in use for experimental measurement and data analysis are discussed to show that many common limitations can be avoided. Some of the more important aspects to be considered involve the use of labeled materials, washed cells, Freundlich isotherm, and molecular structure. In addition, data are presented to show that the octanal-water partition coefficient can be used to predict the potential extent of accumulation.