Synthesis and Analytical Characteristics of New Membrane Materials for Thallium(I) Selective Sensors

The most optimal membrane samples were synthesized, tested, and selected and a comprehensive study of the transport and analytical parameters of membrane materials for potentiometric sensors based on chalcogenide glasses in the TlI–Ag 2 Se–As 2 Se 3 system was conducted. Thallium-selective sensor sa...

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Bibliographic Details
Published in:Russian journal of applied chemistry 2021-09, Vol.94 (9), p.1222-1225
Main Authors: Kalyagin, D. S., Smirnov, I. V., Karavan, M. D., Eremin, V. V., Verkhovskaya, E. A., Kalinin, E. O., Ermolenko, Yu. E.
Format: Article
Language:English
Subjects:
Arsenic triselenide
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Heavy metals
Industrial Chemistry/Chemical Engineering
Inorganic Synthesis and Industrial Inorganic Chemistry
Materials selection
Membranes
Parameters
Selectivity
Sensors
Thallium
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Summary:The most optimal membrane samples were synthesized, tested, and selected and a comprehensive study of the transport and analytical parameters of membrane materials for potentiometric sensors based on chalcogenide glasses in the TlI–Ag 2 Se–As 2 Se 3 system was conducted. Thallium-selective sensor samples with membranes of the composition: 20 mol % TlI–30 mol % Ag 2 Se–50 mol % As 2 Se 3 and 25 mol % TlI–25 mol % Ag 2 Se–50 mol % As 2 Se 3 , demonstrated the best parameters of the electrode function (57–58 mV/pTl), a detection limit of 3 × 10 –6 M, and the best characteristics of selectivity with respect to a number of heavy metal cations.
ISSN:1070-4272
1608-3296
DOI:10.1134/S1070427221090044