Publication result detail

A Comparative study of south moravian lignite and standard IHSS humic acids' optical and colloidal properties.

FASUROVÁ, N.; ČECHLOVSKÁ, H.; KUČERÍK, J.

Original Title

A Comparative study of south moravian lignite and standard IHSS humic acids' optical and colloidal properties.

English Title

A Comparative study of south moravian lignite and standard IHSS humic acids' optical and colloidal properties.

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

Optical and colloidal properties of humic acids isolated from South Moravian lignite and IHSS standards were assessed by emission, excitation and synchronous fluorescence spectroscopy, UV-VIS spectroscopy and by means of zeta potential measurement. Obtained results indicated a high aromaticity of lignite humic acids which causes a strong inner filter effect in fluorescence measurement. As a result, lignite sample showed the lowest fluorescence intensity. The comparison of obtained records as well as humication indexes calculated from UV and fluorescence spectra did not show any correlation with the elemental composition or zeta potential values of humic acids under study. The results indicate that the optical and colloidal properties of humic acids of different origin can not be explained on the base of simple molecular composition. Therefore, also the nature of secondary structure must be taken into consideration.

English abstract

Optical and colloidal properties of humic acids isolated from South Moravian lignite and IHSS standards were assessed by emission, excitation and synchronous fluorescence spectroscopy, UV-VIS spectroscopy and by means of zeta potential measurement. Obtained results indicated a high aromaticity of lignite humic acids which causes a strong inner filter effect in fluorescence measurement. As a result, lignite sample showed the lowest fluorescence intensity. The comparison of obtained records as well as humication indexes calculated from UV and fluorescence spectra did not show any correlation with the elemental composition or zeta potential values of humic acids under study. The results indicate that the optical and colloidal properties of humic acids of different origin can not be explained on the base of simple molecular composition. Therefore, also the nature of secondary structure must be taken into consideration.

Keywords

lignite humic acids, synchronous fluorescence spectroscopy, humification index, zeta potential

Key words in English

lignite humic acids, synchronous fluorescence spectroscopy, humification index, zeta potential

Authors

FASUROVÁ, N.; ČECHLOVSKÁ, H.; KUČERÍK, J.

Released

29.09.2006

ISBN

1335-3055

Periodical

Petroleum and Coal

Volume

48

Number

2

State

Slovak Republic

Pages from

39

Pages to

47

Pages count

9

BibTex

@article{BUT43637,
  author="Naděžda {Fasurová} and Hana {Čechlovská} and Jiří {Kučerík}",
  title="A Comparative study of south moravian lignite and standard IHSS humic acids' optical and colloidal properties.",
  journal="Petroleum and Coal",
  year="2006",
  volume="48",
  number="2",
  pages="39--47",
  issn="1335-3055"
}