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2117019 
Journal Article 
Atomic-Absorption Determination of Tantalum in Ferroniobium 
Janouseic, I 
1983 
315 
3 (1983) 
248. 
A procedure is described for the determination of Ta in ferroniobium in which the influence of interfering elements is eleminated by the proper choice of the sample decomposition and in which the detection limit is lowered by the addition of isobutanol. The relative standard deviation was 3.71 and 1.29% for 0.49 and 4.97% Ta respectively. The detection limit is about 0.01% Ta.--R.E. 
Tantalum; Atomic absorption analysis; Ferroniobium; Chemical analysis