Figures of merit
| Elements | LOD (µg/L) | LOQ (µg/L) | Work range (µg/L) | Repeatability (RSD, %) | Recovery (%) | Uncertainty(1) (%) | EQC (Ζ-score) |
|---|---|---|---|---|---|---|---|
| As | 0.06 | 0.21 | 0.25–2.5 | ≤ 8.3 | 89–119 | 21–25 | –0.1 |
| Cd | 0.03 | 0.09 | 0.25–2.5 | ≤ 5.6 | 93–117 | 20–25 | –1.0 |
| Co | 0.06 | 0.19 | 0.25–2.5 | ≤ 5.4 | 87–107 | 18–23 | 0.2 |
| Cr | 0.13 | 0.42 | 0.5–5.0 | ≤ 10 | 94–102 | 20–28 | 1.9 |
| Cu | 0.11 | 0.35 | 0.5–5.0 | ≤ 8.3 | 93–104 | 16–20 | 0.9 |
| I | 0.27 | 0.90 | 1–10 | ≤ 8.4 | 89–111 | 17–27 | –0.1 |
| Li | 0.06 | 0.19 | 0.25–2.5 | ≤ 8.4 | 100–114 | 26 | n.a. |
| Mn | 0.12 | 0.42 | 0.5–5.0 | ≤ 8.0 | 88–112 | 22–26 | 0.7 |
| Mo | 0.10 | 0.34 | 0.5–5.0 | ≤ 7.0 | 104–120 | 21–30 | 0.2 |
| Pb | 0.11 | 0.37 | 0.5–5.0 | ≤ 3.2 | 93–114 | 22–32 | –0.5 |
| Se | 0.13 | 0.44 | 0.5–5.0 | ≤ 7.8 | 84–107 | 21–24 | 0.1 |
| Sr | 0.12 | 0.41 | 0.5–5.0 | ≤ 7.6 | 95–117 | 20–23 | n.a. |
| Zn | 1.1 | 3.7 | 5–50 | ≤ 9.8 | 81–99 | 22–29 | –0.8 |
(1) Expanded uncertainty (coverage factor of 2). EQC: external quality control; LOD: limit of detection; LOQ: limit of quantification; n.a.: not available; RSD: relative standard deviation