Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Pyrolysis-Mass Spectrometry/Pattern Recognition on a Well-Characterized Suite of Humic Samples.
Author MacCarthy, P. ; DeLuca, S. J. ; Voorhees, K. J. ; Malcolm, R. L. ; Thurman, E. M. ;
CORP Author Colorado School of Mines, Golden. ;Geological Survey, Denver, CO.;Health Effects Research Lab., Research Triangle Park, NC.
Year Published 1985
Report Number EPA/600/J-85/277;
Stock Number PB86-160009
Additional Subjects Humic acids ; Mass spectroscopy ; Pattern recognition ; Qualitative chemical analysis ; Experimental data ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB86-160009 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 8p
A suite of well-characterized humic and fulvic acids of freshwater, soil and plant origin was subjected to pyrolysis-mass spectrometry and the resulting data were analyzed by pattern recognition and factor analysis. A factor analysis plot of the data shows that the humic acids and fulvic acids can be segregated into two distinct classes. Carbohydrate and phenolic components are more pronounced in the pyrolysis products of the fulvic acids, and saturated and unsaturated hydrocarbons contribute more to the humic acid pyrolysis products. A second factor analysis plot shows a separation which appears to be based primarily on whether the samples are of aquatic or soil origin.