Detail publikace

Elemental analysis, FTIR and 13C NMR of humic substances isolated from forest soil

ENEV, V. NOVÁK, F. KLUČÁKOVÁ, M.

Originální název

Elemental analysis, FTIR and 13C NMR of humic substances isolated from forest soil

Typ

abstrakt

Jazyk

angličtina

Originální abstrakt

The aim of this work was study chemical composition, chemical properties and humification degree of different soil humic substances (HS). The object of our study were three various samples of HS. HAs and FA were isolated from forest soil Humic Podzol (locality Krkonoše, Czech Republic). Isolation of soil HS was performed according to the procedure recommended by the International Humic Substances Society (IHSS). The humic and fulvic acids were characterized and compared using chemical methods and spectroscopic techniques, including Fourier transform infrared (FTIR) and liquid-state 13C nuclear magnetic resonance (13C NMR). Infrared spectroscopy is a useful technique in characterization of structure, functional groups and formation modes of HS. 13C NMR spectra of soil HS were obtained with a Bruker Avance III NMR spectrometer at an observation frequency of 125.8 MHz for 13C. The approximate number of scans was 25.000. For data analysis, the spectra were divided into chemical shift regions assigned to the following classes of chemical groups: alkyl C (0–45 ppm), O-alkyl C (45–106 ppm), aromatic C (106–165 ppm), and carbonyl and carboxyl C (165–220 ppm), respectively. Aromaticity (fa), hydrophilicity and hydrophobicity ratio (Hfi/Hfo) and biological activity (BiA) of HS were calculated from the area of the NMR spectra.

Klíčová slova

soil humic substances, elemental analysis, FTIR and 13C NMR spectroscopy, NMR parameters, aromaticity, hydrophilicity and hydrophobicity ratio, biological activity

Autoři

ENEV, V.; NOVÁK, F.; KLUČÁKOVÁ, M.

Vydáno

23. 4. 2015

Nakladatel

Masaryk University

Místo

Brno

ISBN

978-80-210-7825-3

Kniha

CEITEC PHD RETREAT, Valtice 23-24 April 2015, Book of abstracts

Edice

First edition, Brno 2015

ISSN

NEUVEDENO

Strany od

40

Strany do

40

Strany počet

1

BibTex

@misc{BUT114291,
  author="Vojtěch {Enev} and František {Novák} and Martina {Klučáková}",
  title="Elemental analysis, FTIR and 13C NMR of humic substances isolated from forest soil",
  booktitle="CEITEC PHD RETREAT, Valtice 23-24 April 2015, Book of abstracts",
  year="2015",
  series="First edition, Brno 2015",
  pages="40--40",
  publisher="Masaryk University",
  address="Brno",
  isbn="978-80-210-7825-3",
  note="abstract"
}