Publication detail

Complexation of Copper(II) with Humic Acids Studied by Ultrasound Spectrometry

KLUČÁKOVÁ, M.

Original Title

Complexation of Copper(II) with Humic Acids Studied by Ultrasound Spectrometry

Type

journal article - other

Language

English

Original Abstract

Copper biogeochemistry is controlled by bonding to natural organic matter. The soluble forms of bonded copper can be more biologically active due to the higher migration in environmental systems and instability of some copper-humic complexes. In this work, the interactions of copper(II) ions with humic acids are studied by means of high-resolution ultrasound spectrometry. It was found that the stoichiometry of the formed complexes is strongly influenced by the organization of humic acid in solution and by the final pH value in equilibrium. Although the ratio between the added copper and humic acids in all used concentrations was constant and the initial pH value was neutral, we observed significant differences between the individual systems. The highest binding ability was determined for a humic content of 0.5 g/dm3.More diluted and more concentrated systems were able to bind lower amounts of copper. The implemented method is very sensitive and can be utilized not only for monitoring copper binding but also as an indicator of conformational changes of humic acid in solutions with varying concentration.

Keywords

humic acids, complexation, konformace, molekulární organizace, copper, ultrasound spectrometry

Authors

KLUČÁKOVÁ, M.

RIV year

2012

Released

14. 5. 2012

Publisher

Hindawi Publishing Corporation

ISBN

2090-200X

Periodical

Organic Chemistry International

Year of study

2012

Number

5

State

United States of America

Pages from

1

Pages to

6

Pages count

6

URL

https://www.hindawi.com/journals/oci/2012/206025/

Full text in the Digital Library

http://hdl.handle.net/11012/68388

BibTex

@article{BUT92821,
  author="Martina {Klučáková}",
  title="Complexation of Copper(II) with Humic Acids Studied by Ultrasound Spectrometry",
  journal="Organic Chemistry International",
  year="2012",
  volume="2012",
  number="5",
  pages="1--6",
  doi="10.1155/2012/206025",
  issn="2090-200X",
  url="https://www.hindawi.com/journals/oci/2012/206025/"
}