Comparison of soil humic acids and lignohumates

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F19%3A00005620" target="_blank" >RIV/00027006:_____/19:00005620 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.humus.ru/hit-2019/abstractbook/HIT-2019-abstractbook.pdf" target="_blank" >http://www.humus.ru/hit-2019/abstractbook/HIT-2019-abstractbook.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of soil humic acids and lignohumates

Popis výsledku v původním jazyce

Humic acids are among the most important constituents of soil humic substances, because of relating to soil yield. They are of great importance not only in soil, but also for solving environmental problems, in industry, and medicine. Considerable effort has been made in their research. In spite of that, there is still up-to-date improving of their identification methods. Determination of their structure is quite complicated and usually elemental composition and non-destructive spectral techniques are applied. In this work, SFS, FTIR, and 13C NMR spectroscopy were used for detailed characterization of soil HA and lignohumates. 13C NMR spectroscopy help us quantitatively detect different types of carbon (e.g. carbonyl, carboxyl, aromatic, olefinic, anomers, and aliphatic carbon). Percentage of aromatic and aliphatic carbons allows us to calculate aromaticity degree. We came to the conclusion that soil HA contained higher amount of aromatic carbon and less aliphatic carbon to compare with lignohumate. 13C NMR s pect rum of lignohumates (Fig. 1) indicated presence of phenolic carbon (C=O) at 143-157 ppm; sp3 carbon (C-O) at 43-87 ppm; aliphatic and methoxylic groups at 50-60 ppm; long ring -O-alkyl and -CH2- groups at 30 ppm. Less content of aromatic carbon (region 106 - 157 ppm) and more aliphatic carbon (region 15-106 ppm) was found in lignohumates. Indexes calculated from different spectral measurements are considered as a very important indicators of HA quality and origin. In: Perminova, I. (Ed) 2019. Fifth International Conference of CIS IHSS on "Humic Innovative Technologies Humic substances and living systems" (HIT-2019): Book of Abstracts. October 19-23, 2019, Moscow. p. 139. ISBN 978-5-6043540-1-8

Název v anglickém jazyce

Comparison of soil humic acids and lignohumates

Popis výsledku anglicky

Humic acids are among the most important constituents of soil humic substances, because of relating to soil yield. They are of great importance not only in soil, but also for solving environmental problems, in industry, and medicine. Considerable effort has been made in their research. In spite of that, there is still up-to-date improving of their identification methods. Determination of their structure is quite complicated and usually elemental composition and non-destructive spectral techniques are applied. In this work, SFS, FTIR, and 13C NMR spectroscopy were used for detailed characterization of soil HA and lignohumates. 13C NMR spectroscopy help us quantitatively detect different types of carbon (e.g. carbonyl, carboxyl, aromatic, olefinic, anomers, and aliphatic carbon). Percentage of aromatic and aliphatic carbons allows us to calculate aromaticity degree. We came to the conclusion that soil HA contained higher amount of aromatic carbon and less aliphatic carbon to compare with lignohumate. 13C NMR s pect rum of lignohumates (Fig. 1) indicated presence of phenolic carbon (C=O) at 143-157 ppm; sp3 carbon (C-O) at 43-87 ppm; aliphatic and methoxylic groups at 50-60 ppm; long ring -O-alkyl and -CH2- groups at 30 ppm. Less content of aromatic carbon (region 106 - 157 ppm) and more aliphatic carbon (region 15-106 ppm) was found in lignohumates. Indexes calculated from different spectral measurements are considered as a very important indicators of HA quality and origin. In: Perminova, I. (Ed) 2019. Fifth International Conference of CIS IHSS on "Humic Innovative Technologies Humic substances and living systems" (HIT-2019): Book of Abstracts. October 19-23, 2019, Moscow. p. 139. ISBN 978-5-6043540-1-8

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

40104 - Soil science

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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