Abstract

Optical absorption features for ⁷F_0'→⁵L_6' and ⁷F_0'→ ⁷F_6' transitions of trivalent americium ion were investigated in a wide range of aqueous combinations of perchloric and nitric acids (0.1–6.0 mol L⁻¹). The developed qualitative matrix of extinction coefficients measures the cumulative impact of increasing electrolyte content, changes in the hydration zones of americium ion, and inner-sphere perturbation by nitrate on the absorbance. The effects of growing complexity of aqueous electrolyte medium were highlighted for the ⁷F_0'→⁵L_6' transition. Spectroscopy indicates the perturbation of the inner hydration sphere of trivalent f-element by one nitrate ligand.

© 2017 The Author(s)

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