P. Sattler, I. Schreinlechner
1977
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Journal
Analytical Chemistry
Abstract
The niobium determination using the spectrophotometric measurement of the thiocyanate complex is applied for the determination of trace amounts of niobium in sodium. The effects of the concentration of the reagents on the absorbance were studied resulting in the optimization of the conditions for the color development of the complex. The procedure is recommended in the range of up to 10 ..mu..g niobium, whereby a detection limit of 0.040 ..mu..g Nb ml/sup -1/ cm/sup -1/ is obtained.