| Journal: | Quimica nova |
| Database: | PERIÓDICA |
| System number: | 000196066 |
| ISSN: | 0100-4042 |
| Authors: | Canellas, Luciano Pasqualoto1 Guridi, Fernando Santos, Gabriel de A Rumjanek, Victor Marcos Braz-Filho, Raimundo |
| Institutions: | 1Universidade Federal Rural do Rio de Janeiro, Departamento de Solos, Seropedica, Rio de Janeiro. Brasil 2Universidade Federal Rural do Rio de Janeiro, Departamento de Quimica, Seropedica, Rio de Janeiro. Brasil 3Universidade Estadual do Norte Fluminense Darcy Ribeiro, Setor de Quimica de Produtos Naturais, Campos dos Goytacazes, Rio de Janeiro. Brasil |
| Year: | 2001 |
| Season: | Ene-Feb |
| Volumen: | 24 |
| Number: | 1 |
| Pages: | 131-132 |
| Country: | Brasil |
| Language: | Portugués |
| Document type: | Nota breve o noticia |
| Approach: | Experimental, divulgación |
| English abstract | 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 |
| Disciplines: | Química, Agrociencias |
| Keyword: | Química analítica, Suelos, Resolución, Resonancia magnética nuclear, Acidos húmicos, Fierro, Manganeso, Cloruro de potasio |
| Keyword: | Chemistry, Agricultural sciences, Analytical chemistry, Soils, Resolution, Nuclear magnetic resonance, Humic acids, Iron, Manganese, Potassium chloride |
| Full text: | Texto completo (Ver HTML) |
