The structural and conformational characteristics of humic carbon backbones were studied using NMR spectroscopy. Cross-polarized spectroscopy was used to investigate the composition of purified humic substances. High spin rate was obtained by reducing the size of rotors. Protons irradiation eliminated the heteronuclear dipolar interactions. It was found that the NMR signals were reduced due to the mobility of humic material inside the rotors.
CONTE P, R SPACCINI, A PICCOLO (2004). State of the art of CPMAS 13C-NMR spectroscopy applied to natural organic matter. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY, 44(3-4), 215-223 [10.1016/j.pnmrs.2004.02.002].
State of the art of CPMAS 13C-NMR spectroscopy applied to natural organic matter
CONTE, Pellegrino;
2004-01-01
Abstract
The structural and conformational characteristics of humic carbon backbones were studied using NMR spectroscopy. Cross-polarized spectroscopy was used to investigate the composition of purified humic substances. High spin rate was obtained by reducing the size of rotors. Protons irradiation eliminated the heteronuclear dipolar interactions. It was found that the NMR signals were reduced due to the mobility of humic material inside the rotors.
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