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

Abstract EN

A kind of Sr2+ selective resin was applied as an absorption phase to extract Sr2+ ion from an aqueous solution, and the amount of Sr2+ 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 Sr2+.

Foreign ions were examined to observe their effects on the absorption behavior of Sr2+.

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 Sr2+ concentrations from 50 to 1200 μg/L was investigated with the slope of 183 μg/L.

The limit of detection was 21 μg/L with 4.23% relative standard deviation.

The correlation coefficient was found to be 0.9947.

Under the optimized conditions, the concentrations of Sr2+ in four water samples were detected by the developed method.

We propose that this method effectively extracts strontium ion from environmental water samples.