Considering the difficulty to recover trace uranium in organic phase, Na₂CO₃ aqueous solution was used to strip uranium, then the amidoxime adsorbents were chosen to enrich uranyl in the aqueous phase. In the stripping part, the kinetics of stripping, the effects of the concentration of Na₂CO₃ and phase ratio on the stripping efficiency were investigated. Then, in the adsorption part, the effects of shaking rate, the mass of adsorbents and the concentration of Na₂CO₃ were studied. After the validation of the recyclable performance of the amidoxime adsorbents, a process for recovering trace uranium in organic waste liquid was proposed.

The ionic imprinted polymer (IIP) of uranyl ion (UO₂²⁺) was synthesized by the formation of binary complexes of UO₂²⁺ with 1,3-dioxo-1,3-diphenylpropan-2-yl methacrylate (DBM-MAA) as functional monomer followed by thermal copolymerization with ethylene glycol dimethacrylate (EGDMA) as cross-linking monomer in the presence of 2,2′-azobisisobutyronitrile (AIBN) as initiator and 1,4-dioxane as porogenic solvent. 50 mmol/L HCl solution was used to leach out UO₂²⁺ ions from the polymer. The IIP formed with 1:3 molar ratio of UO₂²⁺ to DBM-MAA showed better enrichment of uranyl ion from dilute aqueous solution than others and hence was chosen for detailed studies. The maximum adsorption capaci(NH₄)₄[UO₂(CO₃)₃]sub>)₃] solution was 9.4 mg U/g. The prepared IIP could selectively separate UO₂²⁺ from other metal ions, such as Li⁺, Na⁺, K⁺ and Rb⁺.

3-butyryl-8-methoxy-4-(2-ethylphenylamino) quinoline(SK&F 96067) has been used as an H⁺-K⁺ ATPase inhibitor. It is insoluble in water. The formation of the inclusion complex between drug SK&F 96067 and β-CD was studied by UV absorption, fluorescence and ¹H-NMR spectroscopy. In the aqueous environment a clear isosestic point was observed in the absorption spectra. The fluorescence intensity of SK&F 96067 increased as the concentration of β-CD increased. Continuous variation plot by fluorescence study suggested that 1∶1(guest∶host) stoichiometric complex was formed in the solution. The spectral analysis of ¹H-NMR measurement showed that the signals of the quinoline protons of SK&F 96067 were shifted downfield, resulting from the interaction of β-CD with quinoline ring of SK&F 96067.

The activation energy can indicate the strength ofthe interfacial membranes of microemulsion particles, so it would beused to describe and discuss the stability of the formed microemulsionin extraction organic phase. Variations of activation energies with water contents for microemulsions formed in the organic phase of saponified P507(2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester)-alcohol(n-propanol, n-butanol, n-pentanol and n-hexanol)-heptane-waterwere determined by measurement of electric conductivity. The curves between activation energy and water content V_H2O were given. It is found thatactivation energy of butanol system decreases slightly with the increase of watercontent, while that of pentanol and hexanol systems present a maximum. It is also found that the activation energy increases with the increase of the length of alcohol chain. These results evident that the longer length of alcohol chain, the bigger strength of the interfacial membranes of particles, and more stability of microemulsion. Based on the above results, hexanol or octanol always were used as co-surfactant in extraction process.