Thermal analysis, correlation between physical and chemical properties of humic acids

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F11%3A00371100" target="_blank" >RIV/60077344:_____/11:00371100 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Thermal analysis, correlation between physical and chemical properties of humic acids
Original language description
Selected humic acids extracted from coals mined in different localities in the Czech Republic, their oxidated derivatives, one sample from Chernozem, and a commercially available Fluka product were subjected to the analysis using differential scanning calorimetry and thermogravimetry. Experimental data showed significant differences in stabilities, affinities to water (moisture), ash content and combustion heats. Sample Fluka showed remarkably high content of ash and it was rejected from further considerations. Further, it was found the negative correlation between stability and N content. Combustion heat measured from degradation temperature up to 600 °C using DSC indicated relationship with the aromaticity degree of humic acids under study. On the contrary, no significant relationship was found between combustion heat and the C/H atomic ratio.
Czech name
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Czech description
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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