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Characterization of humic acid fractions by C-13 nuclear magnetic resonance spectroscopy

Environmental Technology Letters

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Abstract

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.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Characterization of humic acid fractions by C-13 nuclear magnetic resonance spectroscopy
Series title:
Environmental Technology Letters
Volume
9
Issue:
1
Year Published:
1988
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Environmental Technology Letters
First page:
53
Last page:
62
Number of Pages:
10