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
Full text in the Digital Library
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/"
}