Spectrophotometric microdetermination of copper(II), silver(I), and gold(III) using azastyrene Schiff bases

A new method for the spectrophotometric microdetermination of Cu(II), Ag(I), and Au(III) using β-2-hydroxybenzyl-5-bromo- (I a), 5-chloro- (I b), and 3-methoxy-2-hydroxyazastyrene (I c) is given. The optimum conditions favoring the formation of the colored complexes are extensively studied. The mole...

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Bibliographic Details
Published in:Microchemical journal 1991-12, Vol.44 (3), p.311-317
Main Authors: Moustafa, M.E., Mabrouk, E.M., Dessouki, H.A., Amine, A.S.
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Exact sciences and technology
Spectrometric and optical methods
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Summary:A new method for the spectrophotometric microdetermination of Cu(II), Ag(I), and Au(III) using β-2-hydroxybenzyl-5-bromo- (I a), 5-chloro- (I b), and 3-methoxy-2-hydroxyazastyrene (I c) is given. The optimum conditions favoring the formation of the colored complexes are extensively studied. The molecular structure was found to be (1:1) and (1:2) (M:L). Beer's law is obeyed up to 5.00, 8.64, and 11.82 ppm for Cu(II), Ag(I), and Au(III), respectively, while the optimum concentration ranges using the Ringbom method are 0.6–5.00, 1.00–8.60, and 2.00–11.80 ppm for the same metal ions, respectively.
ISSN:0026-265X
1095-9149
DOI:10.1016/0026-265X(91)90054-S