Anéis aromáticos condensados e relação E4/E6: estudo de ácidos húmicos de gleissolos por RMN de 13C no estado sólido utilizando a técnica CP/MAS desacoplamento defasado Condensed aromatic rings and E4/E6 ratio: humic acids in gleysoils studied by NMR CP/MAS13C, and dipolar dephasing

Anéis aromáticos condensados e relação E4/E6: estudo de ácidos húmicos de gleissolos por RMN de 13C no estado sólido utilizando a técnica CP/MAS desacoplamento defasado Condensed aromatic rings and E4/E6 ratio: humic acids in gleysoils studied by NMR CP/MAS13C, and dipolar dephasing

<abstract language="eng">In this work, seven samples of humic acids extracted from gleysoils were investigated. These studies, using NMR CP/MAS 13C techniques, did not show significant correlation between the E4/E6 ratio and the degree of aromaticity. However, dipolar dephasing (DD)...

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Bibliographic Details
Main Authors: Sérgio da Costa Saab, Ladislau Martin-Neto
Format: Article
Language:English
Published: Sociedade Brasileira de Química 2007-04-01
Series:Química Nova
Subjects:
CP/MAS NMR 13C
humic acid
dipolar dephasing
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000200003

Internet

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000200003

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