Abstract
Abstract A new spectrophotometric method for determining rhenium with thiocyanate and organic reagents such as amides, thioamide and hydrazide over 2.0–6.0 mol dm−3 H2SO4 is described. The molar absorptivity of the complexes in the organic solvents are (2.57–3.01)×104 1 mol−1 cm−1 at absorption maximum. Of these, N-phenylacetamide (PAA) has been chosen for detailed studies. The detection limit of the method with PAA is 0.03 μg Re cm−3. The effect of kinds of acids, solvents or reagents and of diverse ions is discussed.
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