N-dodecanoylpyrrolidine (DOPOD) was synthesized and used for the extraction
of nitric acid and uranyl(VI) ions from nitric media in toluene. The effec
ts of nitric acid concentration, extractant concentration, temperature, sal
ting-out agent (LiNO3) have been studied. The main adduct of DOPOD and HNO3
is HNO3. DOPOD. The complex formation of uranyl(VI) ion, nitrate ion and D
OPOD (UO2(NO3)(2). 2DOPOD) as extracted species are further confirmed by IR
spectra and the values of thermodynamic parameters have also been calculat
ed.