Publication detail

Agarose Hydrogels Enriched by Humic Acids as the Complexation Agent

KLUČÁKOVÁ, M.

Original Title

Type

journal article in Web of Science

Language

English

Original Abstract

The transport properties of agarose hydrogels enriched by humic acids were studied. Methylene blue, rhodamine 6G and Cu(II) ions were incorporated into hydrogel as diffusion probes, and then their release into water was monitored. Cu(II) ions as well as both the dyes studied in this work have high affinity to humic substances and their interactions strongly affected their diffusion in hydrogels. It was confirmed that humic acids retarded the transport of diffusion probes. Humic acids’ enrichment caused the decrease in the values of effective diffusion coefficients due to their complexation with diffusion probes. In general, the diffusion of dyes was more affected by the complexation with humic acids in comparison with Cu(II) ions. The effect of complexation was selective for the particular diffusion probe. The strongest effect was obtained for the diffusion of methylene blue. It was assumed that metal ions interacted preferentially with acidic functional groups. In contrast to Cu(II) ions, dyes can interact with acidic functional groups, and the condensed cyclic structures of the dye probes supported their interactions with the hydrophobic domains of humic substances.

Keywords

hydrogel; agarose; humic acid; reactivity; diffusion

Authors

KLUČÁKOVÁ, M.

Released

19. 3. 2020

Publisher

MDPI

Location

Basel, Switzerland

ISBN

2073-4360

Periodical

Polymers

Year of study

Number

State

Swiss Confederation

Pages from

687

Pages to

698

Pages count

URL

https://www.mdpi.com/2073-4360/12/3/687

Full text in the Digital Library

http://hdl.handle.net/11012/186579

BibTex

@article{BUT162738,
  author="Martina {Klučáková}",
  title="Agarose Hydrogels Enriched by Humic Acids as the Complexation Agent",
  journal="Polymers",
  year="2020",
  volume="12",
  number="3",
  pages="687--698",
  doi="10.3390/polym12030687",
  issn="2073-4360",
  url="https://www.mdpi.com/2073-4360/12/3/687"
}