Glass electrode, univalent cation-sensitive

Redox potential pH Ionic activities Inert redox electrodes (Pt, Au, glassy carbon, etc.) pH-glass electrode pH-ISFET iridium oxide pH-sensor Electrodes of the first land and M" /M(Hg) electrodes) univalent cation-sensitive glass electrode (alkali metal ions, NHJ) solid membrane ion-selective electrodes (F, halide ions, heavy metal ions) polymer membrane electrodes (F, CN", alkali metal ions, alkaline earth metal ions)... 

Procedure 1 Cell (VI) is constructed using a univalent cation-sensitive glass electrode (Ag electrode for Ag+) and the emf is measured by titrating metal ion M+ with ligand L ... 

Ion solvation has been studied extensively by potentiometry [28, 31]. Among the potentiometric indicator electrodes used as sensors for ion solvation are metal and metal amalgam electrodes for the relevant metal ions, pH glass electrodes and pH-ISFETs for H+ (see Fig. 6.8), univalent cation-sensitive glass electrodes for alkali metal ions, a CuS solid-membrane electrode for Cu2+, an LaF3-based fluoride electrode for l , and some other ISEs. So far, method (2) has been employed most often. The advantage of potentiometry is that the number and the variety of target ions increase by the use of ISEs. 

The sensor for ion solvation was a silver wire for Ag+ and an univalent cation-sensitive glass electrode for Li+ and Na+. In detennining AG (M+, R -> S) from Eq. (6.13), they assumed that the LJPs at PC/(PC + DMSO) and PC/DMSO were negligible (Ej = 0). At the same time, they detennined in PC the step-wise formation constants (/ ) for the complexation of Ag+, Li+ and Na+ with DMSO (see Section 6.3.3), and used them to calculate the Gibbs energies of transfer of those ions from PC to (PC + DMSO) and to neat DMSO. Equations (6.14) and (6.15) were used in the calculation ... 

Glass electrodes are responsive to univalent cations. The selectivity for these cations is achieved by varying the composition of a thin ion-sensitive glass membrane. 

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