Aumento da resolução de espectros de RMN 13C de ácidos húmicos em solução através do tratamento prévio com KCl 0,03 mol L-1

Química Nova

Luciano Pasqualoto Canellas²  Fernando Guridi²  Gabriel De A. Santos²  Victor Marcos Rumjanek¹  Raimundo Braz-filho¹ 

[1] ,Universidade Federal Rural do Rio de Janeiro Departamento de Solos Seropédica RJ

关键词: humic acids;    humic substances;    13C NMR;   

DOI  :  10.1590/S0100-40422001000100021

来源: SciELO

【 摘 要 】

High levels of Fe and Mn present in some soils and compost organic matter decrease the resolution of 13C NMR spectra of humic substances. Addition of KCl up to a concentration of 0,03 mol L-1 to humic substances extracts followed by centrifugation is an efficient method of eliminating clays and minerals containing high levels of paramagnetic metals such as Fe and Mn thus increasing the resolution of 13C NMR spectra.

【 授权许可】

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