Some remarks on the origin of lignite humic acids optical properties

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F09%3APU83812" target="_blank" >RIV/00216305:26310/09:PU83812 - 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

Some remarks on the origin of lignite humic acids optical properties

Original language description

Humic acids (HA) isolated from lignite of South Moravian and North Czech region (leonardite) were characterized by elemental analysis and fluorescence spectroscopy analysis. From both humic acids there were sequentially extracted water soluble fractions,free and bond fatty acids which were consequently characterized by CPMAS 13C-NMR spectroscopy and GC-MS analysis. The respective rests were dissolved in sodium hydroxide and the synchronous fluorescence spectroscopy (SFS) was used to analyze the character of present fluorophores and assess the influence of extracted molecules on the fluorescence of humic acids. The results has revealed a number of essential outcomes for the elaboration of fluorescence records of humic matter: i) based on our and othermeasurements, the optical properties of humic acids could not be aresult of the superposition of numerous independent chromophores, but rather of their mutual interactions; it seems, that SFS evaluates predominantly hydrophobic core of hu

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Petroleum and Coal

ISSN

1335-3055

e-ISSN

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Volume of the periodical

51

Issue of the periodical within the volume

1

Country of publishing house

SK - SLOVAKIA

Number of pages

12

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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