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Results for the determination of Fe(III)/Fe(II) in drug and water samples.
| Sample | Fe(III) added (nM) | Fe(III)/Fe(II) found (nM) | Recovery (%) | RSD (%) [a] |
|---|---|---|---|---|
| Iron supplement drop | 0 | 0.2/3.8 | 1.9 | |
| 2 | 2.23/3.78 | 101.4 | 2.8 | |
| 5 | 5.08/3.76 | 97.7 | 3.3 | |
| Tap water | 0 | 3.12/15.2 | 1.8 | |
| 3 | 6.22/15.16 | 101.6 | 2.1 | |
| 6 | 8.97/15.21 | 98.36 | 2.6 |
