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 ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB86-160009 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
8p |
Abstract |
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. |