Solid Phase Extraction of Trace Amounts of Praseodymium Using Transcarpathian Clinoptilolite
1
Department of Analytical Chemistry, Ivan Franko National University of Lviv, 1 Universytetska St., 79000 Lviv, Ukraine
2
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; https://doi.org/10.3390/colloids3010027
Received: 23 December 2018 / Revised: 8 February 2019 / Accepted: 8 February 2019 / Published: 14 February 2019
(This article belongs to the Special Issue Selected Papers from XVI Polish–Ukrainian Symposium on Theoretical and Experimental Studies of Interfacial Phenomena and their Technological Applications)
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.
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Keywords:
preconcentration; sorption; lanthanide; natural zeolite
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MDPI and ACS Style
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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