%0 Journal Article
%T Solid Phase Extraction of Trace Amounts of Praseodymium Using Transcarpathian Clinoptilolite
%A Galyna Gryshchouk
%A Ihor Patsay
%A Olha Stashkiv
%A Volodymyr Vasylechko
%J -
%D 2019
%R https://doi.org/10.3390/colloids3010027
%X Abstract 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¨C0.31 mm; pH 9.0, temperature of preliminary precalcination of 350 ¡ãC, and flow rate of the Pr(III) salt solution with the concentration of 1.0 ¦Ìg¡¤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¨C100 ng¡¤mL£¿1 with detection limit of 0.7 ng¡¤mL£¿1. View Full-Tex
%K preconcentration
%K sorption
%K lanthanide
%K natural zeolite
%U https://www.mdpi.com/2504-5377/3/1/27