Determination of molecular weights and correlations with the E4/E6 ratio

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F11%3A00371083" target="_blank" >RIV/60077344:_____/11:00371083 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/44555601:13520/11:43883440

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Determination of molecular weights and correlations with the E4/E6 ratio

Popis výsledku v původním jazyce

Molecular weights Mn and Mw and ratio of absorbances at wavelengths 465 and 665 nm (E4/E6) of humic acids prepared from coal, oxyhumolite, lignite, peat, and chernozem from different localities in the Czech Republic were measured. Some samples were prepared from raw materials after their oxidation by nitric acid. It was used to determine molecular weights; they were determined by the UV/VIS spectrometry. Experimental results confirmed that the E4/E6 ratio decrease with increasing molecular weights, determined by SEC (size-exclusion chromatography). The E4/E6 ratios and molecular weights were further compared with other basic characteristics - total acidity, carboxyl groups content, carbon and oxygen content.

Název v anglickém jazyce

Determination of molecular weights and correlations with the E4/E6 ratio

Popis výsledku anglicky

Molecular weights Mn and Mw and ratio of absorbances at wavelengths 465 and 665 nm (E4/E6) of humic acids prepared from coal, oxyhumolite, lignite, peat, and chernozem from different localities in the Czech Republic were measured. Some samples were prepared from raw materials after their oxidation by nitric acid. It was used to determine molecular weights; they were determined by the UV/VIS spectrometry. Experimental results confirmed that the E4/E6 ratio decrease with increasing molecular weights, determined by SEC (size-exclusion chromatography). The E4/E6 ratios and molecular weights were further compared with other basic characteristics - total acidity, carboxyl groups content, carbon and oxygen content.

Druh

C - Kapitola v odborné knize

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

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Projekt

<a href="/cs/project/1M0554" target="_blank" >1M0554: Pokročilé sanační technologie a procesy</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

Humic Acids from Raw Materials of the Czech Republic

ISBN

978-1-61668-965-0

Počet stran výsledku

10

Strana od-do

61-70

Počet stran knihy

133

Název nakladatele

Nova Science Publisher

Místo vydání

New York

Kód UT WoS kapitoly

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