Optical Absorption Characteristics For 7F0'→5L6' and 7F0'→ 7F6' Transitions of Trivalent Americium Ion in Aqueous Electrolyte Mixtures

Optical absorption features for [Formula: see text] and [Formula: see text] 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 [Formula: see text] transition. Spectroscopy indicates the perturbation of the inner hydration sphere of trivalent f-element by one nitrate ligand.