Table 3.
Method Precision.
| Analyte | Metal | Concentration (nM) | Intraday Precision (RSD%) a | Interday Precision (RSD%) a |
|---|---|---|---|---|
| Catechol | 9 | 3.8 | 4.1 | |
| Fe(III) | 200 | 2.7 | 3.1 | |
| 450 | 2.3 | 2.9 | ||
| 9 | 3.6 | 3.5 | ||
| Fe(II) | 200 | 2.8 | 3.0 | |
| 450 | 2.5 | 2.9 | ||
| 3 | 1.4 | 1.7 | ||
| Cu(I) | 200 | 0.9 | 1.3 | |
| 450 | 0.7 | 1.2 | ||
| 2,3-DHBA | 7 | 2.6 | 3.9 | |
| Fe(III) | 150 | 1.6 | 2.2 | |
| 325 | 1.3 | 2.0 | ||
| 7 | 1.2 | 3.1 | ||
| Fe(II) | 150 | 0.5 | 2.1 | |
| 325 | 0.4 | 1.7 | ||
| 7 | 1.4 | 3.0 | ||
| Cu(I) | 150 | 0.5 | 1.4 | |
| 325 | 0.4 | 1.0 | ||
| 2,5-DHBA | 7 | 4.2 | 4.3 | |
| Fe(III) | 150 | 3.0 | 3.3 | |
| 325 | 2.9 | 3.1 | ||
| 7 | 2.7 | 4.4 | ||
| Fe(II) | 150 | 2.2 | 3.1 | |
| 325 | 2.0 | 2.6 | ||
| 2 | 1.4 | 1.6 | ||
| Cu(I) | 150 | 1.0 | 1.4 | |
| 325 | 0.9 | 1.3 |
a n = 6.