Record Display for the EPA National Library Catalog


Main Title Swept-Frequency Magnitude Method for the Dielectric Characterization of Chemical and Biological Systems.
Author Hollis, Mark A. ; Blackman, Carl F. ; Weil, Claude M. ; Allis, John W. ; Schaefer, Daniel J. ;
CORP Author Health Effects Research Lab., Research Triangle Park, NC.
Year Published 1980
Report Number EPA-600/J-80-052;
Stock Number PB81-231136
Additional Subjects Laboratory equipment ; Chemical analysis ; Bioassay ; Adsorption spectra ; Dielectric properties ; Performance evaluation ; Design criteria ; Reprints ; Numerical solution
Library Call Number Additional Info Location Last
NTIS  PB81-231136 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 13p
A swept-frequency system is described which permits the convenient evaluation of many RF parameters of biological and chemical samples. This system is capable of highly accurate magnitude measurements which can provide not only absorption information but also the complex permittivity when processed through a computerized algorithm. Data have been taken on deionized water and on an aqueous triglycine solution, and there is close agreement with the more time-consuming but precise fixed-frequency measurements of cited references. This measurement system is particularly useful for the examination of frequency- and power-specific responses over narrow ranges.