Characterization of humic acid fractions by C-13 nuclear magnetic resonance spectroscopy
January 1, 1988
Soil humic acids from different environments were fractionated by adsorption chromatography on Sephadex and characterized by C‐13 nuclear magnetic resonance (NMR) spectroscopy. The C‐13 NMR spectra of the fractions consist of some sharp, well‐resolved lines and some broad bands in contrast to the spectra of the unfractionated humic acids, where the bands are broader and less well‐resolved. The marked increase in resolution is apparently due to increased homogeneity of the fractions. These spectra are compared to the spectra of model compounds.
Citation Information
| Publication Year | 1988 |
|---|---|
| Title | Characterization of humic acid fractions by C-13 nuclear magnetic resonance spectroscopy |
| DOI | 10.1080/09593338809384538 |
| Authors | Robert L. Wershaw, Kevin A. Thorn, D. J. Pinckney |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Environmental Technology Letters |
| Index ID | 70014847 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | National Research Program - Central Branch |