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Abstract
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Abstract A new micelle-mediated extraction method for the
pre-concentration of trace amounts of Cu2 and Zn2 as a prior
step to their simultaneous spectrophotometric determination
has been developed in various samples. The analytes were
complexed with new synthesized ligand 4,4?-((4-
chlorophenyl)methylene)bis(1,3-diphenyl-1H-pyrazol-5-ol)
(CPBMPY) and Triton X-100 was added as a extraction agent.
The optimal reaction and extraction conditions were optimized
and the analytical characteristics of the method were
obtained. The detection limit of the method was 0.90 and
0.30 ng mL?1 for Cu2 and Zn2 , respectively. Continuous
wavelet transformation (CWT) of visible spectra as a very
simple and accurate method was developed for the simultaneous
determination of binary mixtures of Cu2 and Zn2 ions.
A zero-crossing technique was applied on the transformed
signals and the constructed calibrations were tested by analyzing
the composition of the different binary mixtures. The proposed
procedure successfully was applied to analysis of water,
rice, and medicinal plant and reference material samples. The
amounts of metal ions obtained by the proposed methods were
in good agreement with those obtained by Graphite furnace
atomic absorption spectrometry.
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