Table 2. Selectivity coefficients of proposed sensor.

Interfering ion (B)	Selectivity coefficient	Interfering ion (B)	Selectivity coefficient
H+	4.57 × 10−3	Cu2+	3.98 × 10−3
Li+	5.24 × 10−6	Pb2+	1.48 × 10−2
NH4+	2.81 × 10−4	Ba2+	6.91 × 10−4
Na+	1.20 × 10−4	Ca2+	4.36 × 10−3
K+	3.98 × 10−4	Mg2+	1.58 × 10−3
Cs+	6.91 × 10−5	Fe3+	7.76 × 10−4
Rb+	1.28 × 10−4	Cr3+	1.28 × 10−3
Cd2+	5.60 × 10−3	Nd3+	1.17 × 10−3
Fe2+	3.10 × 10−2	Tb3+	4.36 × 10−4
Co2+	2.81 × 10−3	Y3+	5.88 × 10−4
Ni2+	1.86 × 10−3	Gd3+	1.09 × 10−5
Zn2+	2.34 × 10−3	Ce3+	1.04 × 10−3
Mn2+	1.17 × 10−3	La3+	1.00 × 10−3