Table 2 Selectivity coefficients of the obtained sensors
From: Potentiometric detection and removal of copper using porphyrins
Interfering ion (X) | Electrode A | Electrode B | Electrode C |
|---|---|---|---|
Ni2+ | - 4.38 | - 5.56 | - 5.84 |
Mn2+ | - 1.60 | - 3.28 | - 1.03 |
Co2+ | - 3.67 | - 4.16 | - 2.99 |
Fe3+ | + 1.27 | - 0.80 | - 0.92 |
Na+ | - 1.70 | - 1.68 | - 1.87 |
Li+ | - 2.33 | - 3.74 | - 2.08 |
Zn2+ | - 1.00 | - 2.27 | −3.19 |
Pb2+ | - | −1.26 | - |
Al3+ | - | −2.73 | - |