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Solid Phase Extraction of Trace Amounts of Praseodymium Using Transcarpathian Clinoptilolite

Department of Analytical Chemistry, Ivan Franko National University of Lviv, 1 Universytetska St., 79000 Lviv, Ukraine
Department of Natural Sciences and Environment Protection, Lviv University of Trade and Economics, 9 Samchouk St., 79011 Lviv, Ukraine
Author to whom correspondence should be addressed.
Colloids Interfaces 2019, 3(1), 27;
Received: 23 December 2018 / Revised: 8 February 2019 / Accepted: 8 February 2019 / Published: 14 February 2019
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. View Full-Text
Keywords: preconcentration; sorption; lanthanide; natural zeolite preconcentration; sorption; lanthanide; natural zeolite
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Stashkiv, O.; Vasylechko, V.; Gryshchouk, G.; Patsay, I. Solid Phase Extraction of Trace Amounts of Praseodymium Using Transcarpathian Clinoptilolite. Colloids Interfaces 2019, 3, 27.

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