Table 1 Potentiometric selectivity coefficients of some interfering ions, using MOX
Interferent, J | MOX-TPB | MOX-PM | MOX-PT |
|---|---|---|---|
Na +a | 1.3 × 10-3 | 1.3 × 10-3 | 1.65 × 10-3 |
K +a | 2.9 × 10-3 | 3.33 × 10-3 | 1.2 × 10-4 |
Ca 2+a | 1.5 × 10-3 | 1.49 × 10-3 | 1.79 × 10-3 |
Cu 2+a | 1.84 × 10-3 | 1.845 × 10-3 | 2.4 × 10-2 |
Co 2+ a | 9. 5 × 10-3 | 9. 5 × 10-3 | 0.0113 |
Mg 2+ a | 9.1 × 10-3 | 1.55 × 10-3 | 1.65 × 10-2 |
Magnesium stearate b | 2.0 × 10-3 | 2.18× 10-3 | 2.4 × 10-3 |
Glucose b | 2.0 × 10-3 | 2.09× 10-3 | 2.4 × 10-3 |
Lactose monohydrate b | 2.0 × 10-3 | 2.27× 10-3 | 2.51 × 10-3 |
Starch b | 2.0 × 10-3 | 2.27× 10-3 | 1.79 × 10-3 |
Microcrystalline cellulose b | 2.0 × 10-3 | 2.27× 10-3 | 1.79 × 10-3 |