Comparative study of carbon quantification methods in soil with high Fe contents (Oxisols)

Quimica nova

Martin-Neto, Ladislau¹  Santos, Larissa Macedo dos¹  Borato, Carlos Eduardo¹  Bolonhezi, Denizart¹  Melo, Wanderley José de¹  Silva, Wilson Tadeu Lopes da²  Segnini, Aline² 

[1] Empresa Brasileira de Pesquisa Agropecuária, São Carlos, Brasil;Universidade de São Paulo, São Carlos

关键词: soil organic matter;    carbonquantification methods;    statistical evaluation.;   

DOI  :  10.1590/S0100-40422008000100020

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Soil organic matter (SOM) plays an importantrole in physical, chemical and biological properties of soil. Therefore, theamount 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 differentmethods and compare them, using principal component analysis, regarding theirlimitations. The methods used in this work were Walkley-Black, elemental analysis,total organic carbon (TOC) and thermogravimetry. According to our results, TOCand elemental analysis were the most satisfactory methods for carbon quantification,due to their better accuracy and reproducibility.

【 授权许可】

CC BY