A SENSITIVE SORPTION–SPECTROPHOTOMETRIC METHOD FOR THE DETERMINATION OF CU(II) IONS IN NATURAL WATERS USING PYROCATECHOL BINAFSHA IMMOBILIZED ON A POLYETHYLENE POLYAMINE–POLYACRYLONITRILE (PPF-1) MATRIX
The contamination of natural waters with Cu(II) ions is a pressing environmental problem. The aim of this study is to develop a
sensitive sorption–spectrophotometric method for the determination of Cu(II) ions using pyrocatechol violet reagent immobilized
on a PPF-1 matrix. As a scientific novelty, for the first time, pyrocatechol violet reagent was immobilized onto a modified PPF-1
matrix to create a new polymer-based system for the efficient determination of Cu(II) ions. The studies were carried out using
spectrophotometric and spectroscopic techniques. The absorption spectrum for Cu(II) ion determination was observed at a
wavelength of 610 nm, with an optimal pH range of 5.0. The immobilization efficiency of pyrocatechol violet onto the polymer
matrix was 96%. The developed method is a sensitive and effective approach for the determination and preconcentration of Cu(II)
ions in various types of samples.
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