TABLE 4.

Comparison between the response characteristics of the best electrode (sensor 5) of this work, with early reported sensors.

Characteristics	Abo-Talib et al., 2015, Sensor 2	Abdel-Haleem et al., 2020, sensor 5	This work, sensor 5
Nernstian slope, mV decade–1	58.5	58.9	56.0
Concentration range, M	10–2–10–5	10–3 – 10–7	10–3–10–8
Detection limit, M	7.8 × 10–6	3.6 × 10–8	9.8 × 10–8
log $K_{IVB,N{a}^{+}}^{pot}$	−0.68	−1.79	−2.60
log $K_{IVB,K^{+}}^{pot}$	−0.66	−1.89	−2.20
log $K_{IVB,M{g}^{2+}}^{pot}$	−0.65	−2.17	−2.60
Response time	10 s	30 s	30 s