ORIGINAL RESEARCH
Identification of Chromium Species
in Tanning Solutions
A. Molik 1, J. Siepak 2*, R. Świetlik 1, J. R. Dojlido 1
1) Department of Environmental Protection, Polytechnic University, Radom, Poland
2) Department of Water and Soil Analysis, Adam Mickiewicz University, Drzymały 24, 60-613 Poznań, Poland
2) Department of Water and Soil Analysis, Adam Mickiewicz University, Drzymały 24, 60-613 Poznań, Poland
Pol. J. Environ. Stud. 2004;13(3):311–314
KEYWORDS
ABSTRACT
This paper presents results of a study on identification of the speciation forms of chromium (III) in the
tanning solutions. The cation complexes of Cr(III) were isolated and purified by ion-exchange chromatography.
The isolated speciation forms were identified by differential pulse polarography (DPP) and VIS
spectrophotometry. The activity of the tanning preparations is determined by the specific speciation forms
of Cr(III) present in the solutions and determines their toxicity in the natural environment.
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