Cross polarization, magic-angle spinning 13C nuclear magnetic resonance spectroscopy of soil humic fractions
Cross polarization, magic-angle spinning 13C nuclear magnetic resonance spectroscopy was used to characterize humic fractions isolated from different soils. The acid fractions are more aromatic than the humin fractions, probably due to the higher polyssaccharide content of humins. However, fulvic acid fractions are more aromatic than the corresponding humic acid and humin fractions. These results can be interpreted in terms of the isolation procedure, because the high affinity of Polyclar AT for phenols results in higher aromaticities as compared with other isolation methods (e.g. charcoal).
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| Main Authors: | , , |
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| Other Authors: | |
| Format: | artículo biblioteca |
| Language: | English |
| Published: |
Pergamon Press
1986
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| Online Access: | http://hdl.handle.net/10261/64606 http://dx.doi.org/10.13039/501100007272 http://dx.doi.org/10.13039/100010174 http://dx.doi.org/10.13039/100000001 |
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