Fluorescence decay time, uranyl

Speciation with TRLIF of uranyl chelates with the same primary ligand but different adducts is not possible even with high-precision data. Uranyl chelates that differ only by adduct have identical emission spectra and, as shown in Table II, very similar fluorescence decay times. There is no region on the spectral-temporal map that is unique to the adduct differentiated chelates and, consequently, these uranyl species cannot be sqiarated and analyzed with TRLIF. 

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