| Revue: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000199625 |
| ISSN: | 0100-4042 |
| Autores: | Grassi, Viviane1 Miyazawa, Mario Pavan, Marcos A Kamogawa, Marcos Y |
| Instituciones: | 1Universidade Estadual de Londrina, Londrina, Parana. Brasil 2Instituto Agronomico do Parana, Londrina, Parana. Brasil 3Universidade Federal de Sao Carlos, Departamento de Quimica, Sao Carlos, Sao Paulo. Brasil |
| Año: | 2002 |
| Periodo: | Ene-Feb |
| Volumen: | 25 |
| Número: | 1 |
| Paginación: | 149-152 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | The objective of this study was to develop a method for the direct determination of residual CO32- in acid soil using a flow system coupled with pervaporation. The gas released from the acidified sample was separated though a hydrophobic membrane and detected by conductivimetry. The detection limit was 0.054 mmolc kg-1 for CO2/CO32- with relative error of 3.1%. The analytical frequency was 20 samples per hour. The method is recommended for studying the reactions and kinetics of lime applied in acid soils |
| Disciplinas: | Química, Agrociencias |
| Palabras clave: | Química analítica, Suelos, Carbonatos, Análisis, Suelos ácidos, Conductimetría |
| Keyword: | Chemistry, Agricultural sciences, Analytical chemistry, Soils, Carbonates, Analysis, Acid soils, Conductimetry |
| Texte intégral: | Texto completo (Ver HTML) |
