| Medium 1.0 M AcOH/AcO− | Ions | Peak potantial (V) | Peak height (mm) | Peak Shape |
| pH = 2 | 1 × 10−5 M Co(III) | No peak | No peak | No peak |
| pH = 2 | 1 × 10−5 M Zn(II) | −1.02 | 11 ± 1 | Broad |
| pH = 2 | 1 × 10−5 M Fe(III) | No peak | No peak | No peak |
| pH = 4 | 1 × 10−5 M Co(III) | −1.35 | 33 ± 1 | Broad |
| pH = 4 | 1 × 10−5 M Zn(II) | −1.02 | 35 ± 1 | Sharp |
| pH = 4 | 1 × 10−5 M Fe(II) | No peak | No peak | No peak |
| pH = 5 | 1 × 10−5 M Co(III) | −1.43 | 11 ± 1 | Broad |
| pH = 5 | 1 × 10−5 M Zn(II) | −1.09 | 20 ± 1 | Broad |
| pH = 5 | 1 × 10−5 M Fe(III) | No peak | No peak | No peak |