A resonance light scattering method for the determination of uranium based on a water-soluble salophen and oxalate

作者：Chen, Lin; Liao, Lifu^*; Shen, Xing; He, Yunfei; Xu, Canhui; Xiao, Xilin; Lin, Yingwu; Nie, Changming

来源：Journal of Radioanalytical and Nuclear Chemistry, 2014, 301(3): 863-869.

DOI：10.1007/s10967-014-3225-8

• Uranium
• Resonance light scattering
• Water-soluble salophen
• Oxalate

A resonance light scattering (RLS) method for the direct detection of uranium (VI) or uranyl in aqueous solution without separation procedure has been reported in this paper. Sulfo-salophen, a water-soluble tetradentate Schiff base ligand of uranyl, reacted with uranyl to form a complex. The complex reacted further with oxalate to form supramolecular dimer with large molecular volume, resulting in a production of strong RLS signal. The amount of uranium (VI) was detected through measuring the RLS intensity. A linear range was found to be 0.2-30.0 ng/mL under optimal conditions with a detection limit of 0.15 ng/mL. The method has been applied to determine uranium (VI) in environmental water samples with the relative standard deviations of less than 5 % and the recoveries of 98.8-105.8 %. The present technique is suitable for the assay of uranium (VI) in environmental water samples collected from different sources.

• 出版日期2014-9
• 单位南华大学