Citation: Shu-Chao Wu, Chao-Yang Sun, Wen-Ni Wang, Ying-Ting He, Sheng-Hong Hu, Cun-Jiang Zheng. Separation of strontium from associated elements with selective specific resin and extraction chromatography[J]. Chinese Chemical Letters, ;2013, 24(07): 633-635. shu

Separation of strontium from associated elements with selective specific resin and extraction chromatography

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a Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China;
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b Zhejiang Institute of Geology & Mineral Resources, Hangzhou 310007, China;
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c Key Laboratory of Global Change and Marine-Atmospheric Chemistry, State Oceanic Administration, Xiamen 361005, China

Corresponding author: Cun-Jiang Zheng,
Received Date: 14 March 2013
Available Online: 3 April 2013

In this paper, separation of Sr from associated elements (Na, K, Ca, Mg, and Ba) was carried out using an extraction chromatographic column packed with Sr selective specific resin consisting of an octanol solution of 4,4'(5')-bis(t-butylcyclohexo)-18-crown-6 sorbed on an inert polymeric support. Using 8.0 mol/L HNO₃ as the eluent, Ba and associated elements were eluted immediately from the column, whereas Sr was strongly retained. The adsorbed Sr could then be stripped from the column as the eluent was changed to 0.05 mol/L HNO₃. Complete Sr/Ba separation was demonstrated to be feasible in that Ba could be washed from the column leaving pure Sr by adequate rinsing with 8.0 mol/L HNO₃. Furthermore, matrix effect could be effectively eliminated and the selectivity of the method was improved. The method was applied for the determination of Sr in the high purity barium carbonate (BaCO₃) product and seawater. The recoveries of Sr in 2 samples were determined to be 93.2% and 109%, respectively.
- Strontium,
- Extraction chromatography,
- Selective specific resin
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沈阳化工大学材料科学与工程学院沈阳 110142