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A kind of Sr 2+  selective resin was applied as an absorption phase to extract Sr 2+  ion from an aqueous solution, and the amount of Sr 2+  was determined using inductively coupled plasma optical emission spectrometer. Factors, including absorption time, temperature, stirring rate, salt-out effect, desorption, and the pH of the aqueous solution, were investigated to optimize the absorption efficiency of Sr 2+ . Foreign ions were examined to observe their effects on the absorption behavior of Sr 2+ . The optimum condition was absorption time at 20 min, pH of aqueous solution 7, temperature of 35°C, and 600 rpm stirring rate. A 10 mL solution of 0.1 mol/L HCl is used as the desorption agent. The linear range of Sr 2+  concentrations from 50 to 1200  μ g/L was investigated with the slope of 183  μ g/L. The limit of detection was 21  μ g/L with 4.23% relative standard deviation. The correlation coefficient was found to be 0.9947. Under the optimized conditions, the concentrations of Sr 2+  in four water samples were detected by the developed method. We propose that this method effectively extracts strontium ion from environmental water samples.

Extraction and Analysis of Strontium in Water Sample Using a Sr2+Selective Polymer as the Absorbent Phase

Extraction and Analysis of Strontium in Water Sample Using a Sr²⁺Selective Polymer as the Absorbent Phase