Potentiometric Response Characteristics of Membrane-Based Cs+-Selective Electrodes Containing Ionophore-Functionalized Polymeric Microspheres

Table 3

Unbiased potentiometric selectivity coefficients, log𝐾^𝑝𝑜𝑡_{𝐶𝑠,𝐽}, of the Cs⁺-selective membranes evaluated in this work.

Membrane
	1	2	4	5	6
Ion	log𝐾^potCs,𝐽	log𝐾^potCs,𝐽	log𝐾^potCs,𝐽	log𝐾^potCs,𝐽	log𝐾^potCs,𝐽
Cs^+	0.0	0.0	0.0	0.0	0.0
Rb^+	0.1	−0.2	−0.5	−0.3	−0.2
K^+	<−0.1	−0.8	−1.2	−0.7	−0.5
Na^+	−0.6	−2.3	−3.1	−1.6	−2.0
Li^+	−0.7	−3.4	−3.9	−2.0	−2.8
Ba^2+	−2.7	−3.1	−3.0	−1.7	−2.2
Sr^2+	−3.0	−3.3	−3.5	−1.8	−2.6
Ca^2+	−2.7	−3.8	−3.5	−1.8	−2.7
Mg^2+	−2.8	−4.1	−3.7	−2.5	−3.0