Use of the EPR technique to determine thermal stability of some humified organic substances found in soil organic-mineral fractions

In this work, using the EPR spectroscopy, we analysed the thermal stability of some organic-mineral compounds found in a Gleysoil from Rio Janeiro. It was observed a complete disappearance of the EPR signal around 600 &deg;C for the < 2 µm fraction and a residual EPR signal of semiquinone fre...

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Bibliographic Details
Main Authors: Sérgio da Costa Saab, Ladislau Martin-Neto
Format: Article
Language:English
Published: Sociedade Brasileira de Química 2003-08-01
Series:Química Nova
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422003000400010