Solid Phase Extraction of Trace Amounts of Praseodymium Using Transcarpathian Clinoptilolite

Colloids and Interfaces

Volodymyr Vasylechko¹  Ihor Patsay¹  Olha Stashkiv¹  Galyna Gryshchouk¹ 

[1] Department of Analytical Chemistry, Ivan Franko National University of Lviv, 1 Universytetska St., 79000 Lviv, Ukraine;

关键词: preconcentration;    sorption;    lanthanide;    natural zeolite;   

DOI  :  10.3390/colloids3010027

来源: DOAJ

【 摘 要 】

Sorptive properties of the Transcarpathian clinoptilolite towards Pr(III) were studied under dynamic conditions. The sorption capacity of clinoptilolite under optimal conditions (sorbent grain diameter of 0.20⁻0.31 mm; pH 9.0, temperature of preliminary precalcination of 350 °C, and flow rate of the Pr(III) salt solution with the concentration of 1.0 μg·mL⁻¹ through the sorbent of 5 mL·min⁻¹) was equal to 47.5 mg·g⁻¹. The best desorbent of Pr from the clinoptilolite was the 1 M solution of KCl acidified with HCl to a pH value of 3.0. The method of Pr(III) trace amounts preconcentration in a solid phase extraction mode with further determination of this REE via spectrophotometric technique was developed. The linearity of the proposed method was evaluated in the range of 2⁻100 ng·mL⁻¹ with detection limit of 0.7 ng·mL⁻¹.

【 授权许可】

Unknown