Abstract
The formation of niobium(V) and tantalum(V) complexes of 2,3,4-trioxyphenylazo-5-sulfonaphthalene in the presence of cetyltrimethylammonium bromide was studied by spectrophotometry. The effect of surfactants on the chemical and analytical properties of niobium(V) and tantalum(V) complexes of this reagent was studied. Procedures were developed for the spectrophotometric determination of niobium and tantalum present simultaneously as mixed-ligand complexes. The procedures were tested on model solutions.
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Nagiev, K.D. Spectrophotometric Determination of Simultaneously Present Niobium and Tantalum. Journal of Analytical Chemistry 59, 930–934 (2004). https://doi.org/10.1023/B:JANC.0000043907.91045.f0
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DOI: https://doi.org/10.1023/B:JANC.0000043907.91045.f0