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Exothermic effects in soils during thermal analysis

Published online by Cambridge University Press:  09 July 2018

K. Emmerich  and
W. Smykatz-Kloss
K. Emmerich
Affiliation:
Bundesanstalt für Geowissenschaften und Rohstoffe, Stilleweg 2, D-30655 Hannover, Germany
W. Smykatz-Kloss*
Affiliation:
Institut für Mineralogie und Geochemie, Universität Karlsruhe, Kaiserstr. 12, D-76131 Karlsruhe, Germany
*
*E-mail: smykatz@bio-geo.uni-karlsruhe.de
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Abstract

This paper addresses the application of thermal analytical methods (DTA/DSC/TG/ MS) in soil investigations, especially the interrelation of exothermic effects and analytical or preparative parameters. For the superimposed decomposition/ oxidation reactions of siderites, FeCO3, the heating rate is shown to have a decisive influence because low heating rates tend to suppress the endothermic effect. In mixtures of small amounts of organic matter (glucose and starch) with talc, the phyllosilicate acts as a catalyst by influencing the intensity of combustion of the organic matter.

Keywords

exothermicthermal analysissoilssiderite
Type
Research Article
Information
Clay Minerals , Volume 37 , Issue 4 , December 2002 , pp. 575 - 582
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2002

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