Evaluation of magnetic field effect on quantification of aromatic components of humic acids by 13C CPMAS NMR

Abstract

2 pages, 3 figures, 2 references.-- Comunicación oral presentada al citado Congreso, celebrado del 7-11 de mayo 2007, en Río de Janeiro, Brasil.High resolution 13C NMR spectroscopy, acquired with the CPMAS technique, has been a powerful tool to analyze chemical composition of soil organic mater (SOM), since 1980. The principal application of the CPMAS technique has been the quantification of the structural components of humic substances such as tile amount of aromatic, aliphatic, carbonyl and carboxyl groups.Peer reviewe