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Structural assessment of humic fractions from different soils through 13C NMR spectroscopy and ruthenium tetroxide oxidation

AuthorsGonzález-Vila, Francisco Javier ; Río Andrade, José Carlos del ; Almendros Martín, Gonzalo ; Martín Martínez, Francisco
Issue Date1994
CitationProceedings of the 6th International Meeting of the International Humic: 293-298 (1994)
AbstractHumic acids and humin fractions isolated from three representative types of terrestrial humus have been compared by CPMAS 13C NMR spectroscopy and degradation with ruthenium tetroxide. It was found that the latter method was suitable to remove the constituents of the condensed polyalkyl moietie of the humic fractions. The humin fractions showed NMR spectra with substantial amounts of O-alkyl and alkyl structures and yield mixtures of oxidation products qualitatively and quantitatively different from those corresponding to the humic acid fractions. The clear differences found between the degradation patterns were only in part reflected by the NMR spectra.
Description6 pages, 2 figures, 1 table, 24 references.-- El libro donde aparece publicado, se titula Humic Substances in the Global Environment and Implications on Human Health, consta de 1368 páginas.-- El congreso citado se celebró del 20-25 de septiembre de 1992 en Monopoli (Bari), Italia.
Appears in Collections:(IRNAS) Comunicaciones congresos
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