Table 1.
Standard calibration curves for studied metals.
| No | Metal | Wave, λ (nm) | Lower Limit (μg/L) | Upper Limit (μg/L) | Calibration Curve | R2 |
|---|---|---|---|---|---|---|
| 1 | Pb | 283.3 | 7.4 | 37 | y = 0.001778 + 0.003524x | 0.9994 |
| 2 | As | 193.7 | 13.2 | 58.1 | y = 0.00185 + 0.001544x | 0.9927 |
| 3 | Co | 240.7 | 5.4 | 29.4 | y = 0.008353 + 0.010864x | 0.9929 |
| 4 | Cd | 228.8 | 0.1 | 2.2 | y = 0.004734 + 0.071971x | 0.9923 |
| 5 | Ni | 232 | 4.2 | 34.6 | y = 0.033774 + 0.011603x | 0.9967 |
| 6 | Mn | 297.5 | 0.84 | 4,2 | y = 0.007792 + 0.112496x | 0.9925 |
| 7 | Zn | 213.9 | 1 | 8 | y = 0.071658 + 0.092202x | 0.9827 |
| 8 | Cu | 324.8 | 3.6 | 18 | y = 0.020731 + 0.016628x | 0.9961 |
| 9 | Cr | 357.9 | 5 | 22 | y = 0.018371 + 0.018435x | 0.9961 |
| 10 | Fe | 248.3 | 3.6 | 14.4 | y = 0.02274 + 0.013974 | 0.9939 |
| 11 | Al | 309.3 | 13.2 | 58.2 | y = 0.006978 + 0.00175x | 0.9971 |