Detail publikace

Fractionation of humus and optical properties of humic acids originating from different soil types.

FASUROVÁ, N. POSPÍŠILOVÁ, Ľ.

Originální název

Fractionation of humus and optical properties of humic acids originating from different soil types.

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

Assesment of soil organic matter quality is one of the urgent problems of contemporary agriculture. Determination of humic acids (HAs) optical properties using spectroscopic techniques could be a reliable step for this evaluation. We followed differences in the functional groups of HAs preparations and showed correlation between optical indexes and fractional composition of humus. UV-VIS and SFS spectral lines and indexes were measured in mixture 0.1M pyrophosphate sodium solution and 0,1M NaOH, after filtration and appropriate dilution. Differences in the structural composition of HAs originating from different soil types were studied after isolation of HAs preparations using FTIR spectroscopy (KBr + HAs pellets, SRATR FTIR method). Results showed that studied HAs preparations could be divided into two groups. First group included HAs isolated from Chernozem and Haplic Luvisol with higher content of aromatic constituents and condensation degree. The second group were HAs isolated from Eutric Cambisol and Fluvi-Eutric Gleysol. They reflected lower content of aromatic compounds, lower condensation degree and more aliphatic structural groups in the HAs molecule. Linear correlation between fractional composition of humus and optical indexes (I501/I487, Q4/6) was found.

Klíčová slova

humus fractionation, humic acids, UV-Vis, FTIR, SFS spectra, Chernozem, Haplic Luvisol, Eutric Cambisol, Fluvi-Eutric Gleysol

Autoři

FASUROVÁ, N.; POSPÍŠILOVÁ, Ľ.

Rok RIV

2006

Vydáno

20. 4. 2006

Místo

Brno, MZLU

ISSN

1211-8516

Periodikum

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis

Ročník

LIV

Číslo

4

Stát

Česká republika

Strany od

45

Strany do

52

Strany počet

8

BibTex

@article{BUT43641,
  author="Naděžda {Fasurová} and Ľubica {Pospíšilová}",
  title="Fractionation of humus and optical properties of humic acids originating from different soil types.",
  journal="Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis",
  year="2006",
  volume="LIV",
  number="4",
  pages="45--52",
  issn="1211-8516"
}