Spectrophotometric determination of tantalum by extraction as tetrabutylammonium hexathiocyanatotantalate(V) Original Research Article

Tantalum (0–20 μg) can be determined spectrophotometrically at 482 nm after extraction as tetrabutylammonium hexathiocyanatotantalate(V) into ethyl acetate. The effects of diverse ions, reagent conditions and masking agents are reported. The system has been applied to the determination of tantalum in tin slag samples.