“…Ion-selective electrodes based on ChGs superior their polycrystalline analogous with higher sensitivity of the electrode function, better selectivity in the presence of some interfering ions, longer time-of-life, faster response and excellent chemical durability in acidic and oxidation media [4][5][6][7]. Recently, many chalcogenide glassy sensors reversible to Ag + - [7,8], Cu 2+ - [7,9], Pb 2+ - [7,10], Cd 2+ - [11,12], Fe 3+ - [13,14], Zn 2+ -ions [15,16], etc., have been developed and thoroughly studied.…”