Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Pyrographic Gross Characterization of Water Contaminants.
Author Lysy, Ihor ; Newto, P. R. ;
CORP Author Environmental Protection Agency, Athens, Ga. Southeast Environmental Research Lab.
Year Published 1973
Report Number EPA-144-12-802; EPA-16050-EXD; 11446,; R2-73-227
Stock Number PB-221 551
Additional Subjects ( Water analysis ; Gas chromatography) ; ( Pyrolysis ; Water analysis) ; ( Water pollution ; Water analysis) ; Laboratory equipment ; Design ; Industrial wastes ; Performance evaluation ; Quantitative analysis ; Monitors ; Pyrolysis gas chromatography ; Water pollution detection ; Pyrography
Library Call Number Additional Info Location Last
NTIS  PB-221 551 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 97p
A hydrochemical instrument and methodology were developed for direct analysis of organic materials in aqueous solutions based on thermal fragmentation followed by gas chromatographic separation and detection of the resulting derivative compositions. The applications of the developed technique to water pollution surveillance, optimization of waste treatment processes, and characterization of natural waters were studied. A recorded pattern of pyrolytically produced fragments for a given water sample reflects the total nature of its organic composition, and can be interpreted and differentiated in a number of ways. Using a priori established calibration patterns for individual components to be found in a mixture, the pattern produced by a mixture can be analyzed mathematically. The system can be calibrated and the data can be interpreted in terms of pure organic compounds, classes of organic materials, or any other arbitrarily defined organic mixtures such as those found in industrial waste effluents. (Modified author abstract)