VOLTAMMETRIC DETERMINATION OF Ni(II) USING 1-[(5-(3-NITROBENZYL)-1,3-THIAZOL-2-YL)DIAZENYL]NAPHTHALENE-2-OL 

O. Fedyshyn, L. Oleksiv, S. Tymoshuk, O. Tymoshuk


DOI: http://dx.doi.org/10.30970/vch.6301.170

Abstract


A new reagent, 1-[(5-(3-nitrobenzyl)-1,3-thiazol-2-yl)diazenyl]naphthalen-2-ol, which is a derivative of 1-[(5-benzyl-1,3-thiazol-2-yl)diazenyl]naphthalene-2-ol, was proposed for the voltammetric determination of nickel(II). The voltammetric characteristics of aqueous-ethanolic solutions (50% v/v) of NBnTAN and this reagent in the presence of nickel(II) ions were investigated. Optimal conditions for the determination of nickel(II) using 1-[(5-(3-nitrobenzyl)-1,3-thiazol-2-yl)diazenyl]naphthalen-2-ol on the background of sodium chloride at pH 7.0 (Сmin=1,3×10-7М) were determined. The selectivity of this technique with respect to related metal ions was investigated. Approbation was performed during the analysis of an aluminum-based alloy (A 1891).

 

Keywords: 1-[(5-(3-nitrobenzyl)-1,3-thiazol-2-yl)diazenyl]naphthalen-2-ol, thiazolylase dyes, voltammetry, nickel (II).


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