Spectroscopic investigation of cation effects in U(vi)-NO₃ ^- complexation in aqueous solutions.

ABSTRACT: Understanding and manipulating uranyl speciation in aqueous solutions is critical for advancing chemical separation, sensing, and understanding environmental transport of uranyl. We report on the significant enhancement in the complexation of uranyl with nitrate in aqueous solutions containing quaternary ammonium cations leading to the formation of anionic complexes. We base this on the comparative study of the effect of monovalent cations (Na⁺, Li⁺, NH₄ ⁺, and N(CH₃)₄ ⁺) on the complexation equilibria of uranyl-nitrate in solutions, probed by time-resolved laser induced fluorescence spectroscopy (TRLFS). Lifetime-corrected spectra, obtained by extrapolating the time-resolved spectra to t = 0, were used to

SUBMITTER: Nayak S 

PROVIDER: S-EPMC12536881 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature