Luminescence-based determination of ytterbium (III) and morin in solution using sorption by transcarpathian clinoptilolite

• Published in: Molecular Crystals and Liquid Crystals Vol. 719; no. 1; pp. 124 - 139
• Main Authors: Stashkiv, Olha D., Vasylechko, Volodymyr O., Gamernyk, Roman V., Gryshchouk, Galyna V., Zelinskiy, Anatoliy V., Koliada, Liliia B.
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis 13.04.2021; Taylor & Francis Ltd
• Subjects: Clinoptilolite; morin; preconcentration; Rare earth elements; Sorption; sorption-luminescence determination; Ytterbium
• ISSN: 1542-1406; 1563-5287; 1527-1943
• DOI: 10.1080/15421406.2020.1862468

Sorption-luminescent methods for ytterbium and morin determination based on the clinoptilolite were proposed. Optimal luminescent material preparation condition is the sorption of Yb(III) on the precalcined at 50 °C clinoptilolite in the solution with pH 8.0. The obtained clinoptilolite-Yb(III) sample was treated with morin solution. Definable range of Yb(III) concentration with the detection limit of 0.1 μg·mL −1 is within 0.25-1.0 μg·mL −1 . The proposed method can be used for ytterbium determination in the presence of many rare earths. The range of the determination concentrations of morin is 3·× 10 −4 − 4·× 10 −3  mol·L −1 . The detection limit is 1.5·×·10 −4  mol·L −1 .