Abstract
A new, simple, precise, selective and sensitive method for the extraction and spectrophotometric determination of niobium has been described. Mixed-ligand complexes of Niobium (V) with 2,6-dithiolphenol (DTP) and aminophenols (AP) have been studied by spectrophotometry. Extraction of mixed-ligand complexes is maximal at pH 3.6 - 5.0. The optimal conditions for the formation and extraction of mixed-ligand compounds have been found. The molar ratio of the reacting species was 1:2:2 (Nb:DTP:AP). The Beer’s law was applicable in the range of 0.05 - 4.0 μg/ml. The method is free from common interferences. A procedure has been developed for extraction-spectrophotometric determination of Niobium in steel.
Highlights
Niobium and its compounds have a broad spectrum of applications
The results showed that N-cinnamoyl-N-2,3-xylylhyd-roxylamine (CXHA) was the most suitable reagent for the spectrophotometric determination of small amounts of niobium [9]
Experiments on electromigration in a U-shaped tube and on sorption on EDE-10P (EDE—ethylenediamine, epichlorohydrin; 10—serial number of the brand: P—means that the matrix has a macroporous structure) anion exchangers have demonstrated the anionic nature of single-ligand complexes, in the electromigration study of the complexes, it was found that the blue-green dithiophenolate complexes of Niobium (V) moved to the cathode
Summary
Niobium and its compounds have a broad spectrum of applications. They are used for the fabrication of special materials for microelectronics and optics, superconductors, refractory materials, catalysts, and alloys [1].Spectrophotometric method remains one of the most popular among widely used methods in analytical practice. Niobium and its compounds have a broad spectrum of applications. They are used for the fabrication of special materials for microelectronics and optics, superconductors, refractory materials, catalysts, and alloys [1]. Spectrophotometric method remains one of the most popular among widely used methods in analytical practice. The simplicity of the experiment, which does not require expensive equipment, flexibility and sufficient accuracy of determination, makes the method cost-effective. How to cite this paper: Kuliyev, K.A. and Verdizadeh, N.A. (2015) Spectroscopic Investigation of the Complex Formation of Niobium Using 2,6-Dithiolphenol and Aminophenols. American Journal of Analytical Chemistry, 6, 746-756.
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