Limits...
Extraction and Analysis of Strontium in Water Sample Using a Sr (2+) Selective Polymer as the Absorbent Phase.

Ying R - Int J Anal Chem (2015)

Bottom Line: Foreign ions were examined to observe their effects on the absorption behavior of Sr(2+).The correlation coefficient was found to be 0.9947.We propose that this method effectively extracts strontium ion from environmental water samples.

View Article: PubMed Central - PubMed

Affiliation: College of Chemistry and Chemical Engineering, Linyi University, Linyi 276005, China.

ABSTRACT
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 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 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.

No MeSH data available.


Related in: MedlinePlus

Effect of temperature on the extraction efficiency (Q) of Sr2+. Extraction conditions: absorption time 20 min, pH 7, and stirring rate 600 rpm.
© Copyright Policy - open-access
Related In: Results  -  Collection


getmorefigures.php?uid=PMC4660021&req=5

fig3: Effect of temperature on the extraction efficiency (Q) of Sr2+. Extraction conditions: absorption time 20 min, pH 7, and stirring rate 600 rpm.

Mentions: During extraction, temperature has an important impact on the absorption efficiency of the target in aqueous solution. At high temperature, the diffusion coefficient of strontium ion in aqueous solution is higher, and the absorption time may be shortened [20]. The effect of temperature was studied by evaluating absorption temperature at 28, 35, 40, 45, 50, and 60°C. Figure 3 shows minimal differences in absorption at the temperatures studied. Although the absorption rate is accelerated with increasing temperature, the partition coefficient depends on temperature, so the effect of temperature on absorption efficiency is not significant. Thus, 35°C was chosen for the subsequent experiments.


Extraction and Analysis of Strontium in Water Sample Using a Sr (2+) Selective Polymer as the Absorbent Phase.

Ying R - Int J Anal Chem (2015)

Effect of temperature on the extraction efficiency (Q) of Sr2+. Extraction conditions: absorption time 20 min, pH 7, and stirring rate 600 rpm.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4660021&req=5

fig3: Effect of temperature on the extraction efficiency (Q) of Sr2+. Extraction conditions: absorption time 20 min, pH 7, and stirring rate 600 rpm.
Mentions: During extraction, temperature has an important impact on the absorption efficiency of the target in aqueous solution. At high temperature, the diffusion coefficient of strontium ion in aqueous solution is higher, and the absorption time may be shortened [20]. The effect of temperature was studied by evaluating absorption temperature at 28, 35, 40, 45, 50, and 60°C. Figure 3 shows minimal differences in absorption at the temperatures studied. Although the absorption rate is accelerated with increasing temperature, the partition coefficient depends on temperature, so the effect of temperature on absorption efficiency is not significant. Thus, 35°C was chosen for the subsequent experiments.

Bottom Line: Foreign ions were examined to observe their effects on the absorption behavior of Sr(2+).The correlation coefficient was found to be 0.9947.We propose that this method effectively extracts strontium ion from environmental water samples.

View Article: PubMed Central - PubMed

Affiliation: College of Chemistry and Chemical Engineering, Linyi University, Linyi 276005, China.

ABSTRACT
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 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 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.

No MeSH data available.


Related in: MedlinePlus