Huminové kyseliny z oxidovaných uhlí:Studium pomocí kapilární zónová elektroforézy a hmotnostní spektrometrie.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F04%3A00010198" target="_blank" >RIV/61989100:27360/04:00010198 - 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

Humic acids from oxidized coals:Capillary zone electrophoresis and mass-spectrometry study

Popis výsledku v původním jazyce

Humic acids from open-air and laboratory oxidized bituminous coals (under various temperatures) were prepared and characterized. For the comparison, lignite and oxidized lignite (oxihumolite) were examined as well. All samples were analyzed by capillaryzone electrohoresis (CZE) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF). For the CZE separation of humic acids (HAs), the borate-Tris-EDTA (pH=8.3) and borate-b-cyclodextrine (pH=9.6) electrolytes were used.The samples of humic acids were prepared by their dissolution in sodium hydroxide solutions. All CZE electropherograms are typical by a huge non-resolved peak (hump) which contains a lot of migrating humic acids. The ageing effect of HAs, brought abouttheir self-assembling processes, was observed as a prolongation of hump migration times in both electrolyte systems. However, after 30 days a very good reproducibility of electropherograms was obtained. In the borate-Tris-EDTA electrolyte

Název v anglickém jazyce

Humic acids from oxidized coals:Capillary zone electrophoresis and mass-spectrometry study

Popis výsledku anglicky

Humic acids from open-air and laboratory oxidized bituminous coals (under various temperatures) were prepared and characterized. For the comparison, lignite and oxidized lignite (oxihumolite) were examined as well. All samples were analyzed by capillaryzone electrohoresis (CZE) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF). For the CZE separation of humic acids (HAs), the borate-Tris-EDTA (pH=8.3) and borate-b-cyclodextrine (pH=9.6) electrolytes were used.The samples of humic acids were prepared by their dissolution in sodium hydroxide solutions. All CZE electropherograms are typical by a huge non-resolved peak (hump) which contains a lot of migrating humic acids. The ageing effect of HAs, brought abouttheir self-assembling processes, was observed as a prolongation of hump migration times in both electrolyte systems. However, after 30 days a very good reproducibility of electropherograms was obtained. In the borate-Tris-EDTA electrolyte

Druh

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

CEP obor

DD - Geochemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA105%2F02%2F0163" target="_blank" >GA105/02/0163: Studium složení výše-popelnatého hnědého uhlí na afinitu a těkavost toxických prvků a látek pro energetické použití</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2004

Kód důvěrnosti údajů

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

Název periodika

Acta Geodynamica et Geomateriala

ISSN

1211-1910

e-ISSN

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Svazek periodika

136

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

10

Strana od-do

7-16

Kód UT WoS článku

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EID výsledku v databázi Scopus

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