Some remarks on the origin of lignite humic acids optical properties

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Some remarks on the origin of lignite humic acids optical properties

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

Some remarks on the origin of lignite humic acids optical properties

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Petroleum and Coal

ISSN

1335-3055

e-ISSN

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Svazek periodika

51

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

12

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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