Table 4. Limit of Detection and Limit of Quantification Values.
| sensor | metal ion | limit of detection | limit of quantification |
|---|---|---|---|
| SS1 | Cu2+ | 252 × 10–6 M | 842 × 10–6 M |
| Fe2+ | 55 × 10–6 M | 183.9 × 10–6 M | |
| Fe3+ | 36.64 × 10–6 M | 121.13 × 10–6 M | |
| SS2 | Cu2+ | 177 × 10–6 M | 590 × 10–6 M |
| Fe2+ | 22.15 × 10–6 M | 73.86 × 10–6 M | |
| Fe3+ | 14.33 × 10–6 M | 47.79 × 10–6 M |