ISSN 0005-2531 (Print) ISSN 2522-1841 (Online)
DIFFERENT LIGAND COMPLEXES OF COPPER(II) WITH ORGANIC REAGENTS AND THEIR APPLICATION TO THE PHOTOMETRIC ANALYSIS
A.Z.Zalov

Conditions have been studied for the formation of complexes of copper with hydroxyhlogenated thiophenol (HHTPh) and aminophenols (APh) (рНоp 3.0–6.0; λмаx = 450–460 nm; Δλ = 275– 285 nm; εмаx = (3.5–4.3) 104; lg Keq=8.32–9.37). The single time extraction is 98.1–98.6%. The formation of a ligand complex of the composition Cu(II): HHTPh:АPh = 1:2:2 in case of АPh1 and 1:2:1for АPh2 was detected. Beer`s law is obeyed within 0.2–16 mkg of copper in 1 ml of the extract. The limit of detection for Cu(II) at P=0.95 makes up  0.010–0.014 mkg/ml, Sr is 0.15–0.045

Keywords : spectrophotometric method, aminophenols, amines, transition elements
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SUBMITION
THE LAST NUMBER OF THE JOURNAL
№2 2022
CONTENT
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