Detail publikace

Characterization of pH-fractionated humic acids with respect to their dissociation behaviour

KLUČÁKOVÁ, M.

Originální název

Characterization of pH-fractionated humic acids with respect to their dissociation behaviour

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Humic acids were divided into several fractions using buffer solutions as extraction agents with different pH values. Two methods of fractionation were used. The first one was subsequent dissolution of bulk humic acids in buffers adjusted to different pH. The second one was sequential dissolution in buffers with increasing pH values. Experimental data were compared with hypothesis of partial solubility of humic acids in aqueous solutions. Behaviour of humic fractions obtained by sequential dissolution, original bulk sample and residual fractions obtained by subsequent dissolution at pH 10 and 12 agrees with the hypothesis. Results demonstrated that regardless the common mechanism, solubility and dissociation degree of various humic fractions may be very different and can be estimated using parameters of the model based on the proposed mechanism. Presented results suggest that dissolving of solid humic acids in water environment is more complex than conventional solubility behaviour of sparingly soluble solids.

Klíčová slova

Humic acid; Dissociation; Solubility; Polyelectrolyte; Fractionation; Acid–base behaviour

Autoři

KLUČÁKOVÁ, M.

Vydáno

9. 1. 2016

Nakladatel

Springer

ISSN

0944-1344

Periodikum

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH

Ročník

23

Číslo

1

Stát

Spolková republika Německo

Strany od

7722

Strany do

7731

Strany počet

10

BibTex

@article{BUT120453,
  author="Martina {Klučáková}",
  title="Characterization of pH-fractionated humic acids with respect
to their dissociation behaviour",
  journal="ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH",
  year="2016",
  volume="23",
  number="1",
  pages="7722--7731",
  doi="10.1007/s11356-015-5932-2",
  issn="0944-1344"
}