Artigo
Estudo comparativo de métodos para a determinação da concentração de carbono em solos com altos teores de Fe (Latossolos)
Fecha
2008-01-01Registro en:
Química Nova. Sociedade Brasileira de Química, v. 31, n. 1, p. 94-97, 2008.
0100-4042
10.1590/S0100-40422008000100020
S0100-40422008000100020
WOS:000253426200020
S0100-40422008000100020.pdf
Autor
Universidade de São Paulo (USP)
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
Universidade Estadual Paulista (Unesp)
Agência Paulista de Tecnologia dos Agronegócios (APTA)
Resumen
Soil organic matter (SOM) plays an important role in physical, chemical and biological properties of soil. Therefore, the amount of SOM is important for soil management for sustainable agriculture. The objective of this work was to evaluate the amount of SOM in oxisols by different methods and compare them, using principal component analysis, regarding their limitations. The methods used in this work were Walkley-Black, elemental analysis, total organic carbon (TOC) and thermogravimetry. According to our results, TOC and elemental analysis were the most satisfactory methods for carbon quantification, due to their better accuracy and reproducibility.