A resonance light scattering method for the determination of uranium based on a water-soluble salophen and oxalate
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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.
KeywordsUranium Resonance light scattering Water-soluble salophen Oxalate
The authors thank the National Natural Science Foundation of China (NSFC Nos. 11275091, 10975069 and 11275090) for financial support.
- 2.Thangavel S, Dhavile SM, Dash K, Chaurasia SC (2010) Trace level determination of uranium and thorium in ilmenite ore by inductively coupled plasma atomic emission spectrometry (ICP-AES). Atom Spectrosc 31:92–96Google Scholar
- 24.Ciogli A, Dalla Cort A, Gasparrini F, Lunazzi L, Mandolini L, Mazzanti A, Pasquini C, Pierini M, Schiaffino L, Mihan FY (2008) Enantiomerization of chiral uranyl-salophen complexes via unprecedented ligand hemilability: toward configurationally stable derivatives. J Org Chem 73:6108–6118CrossRefGoogle Scholar
- 32.Takao K, Ikeda Y (2007) Structural characterization and reactivity of UO2(salophen)L and [UO2(salophen)]2: dimerization of UO2(salophen) fragments in noncoordinating solvents (salophen = N,N′-disalicylidene-o-phenylenediaminate, L = N,N-dimethylformamide, dimethyl sulfoxide). Inorg Chem 46:1550–1562CrossRefGoogle Scholar