Table 2.
Working conditions for determination of concentration of some heavy metals using Atomic absorption spectrophotometer.
| Metals | Wavelength (nm) | Slit width (nm) | Detection limit (mg/l) | Lamp current (mA) | Linear range (mg/l) | Flame type (colour) |
|---|---|---|---|---|---|---|
| Mn | 279.5 | 0.7 | 0.03 | 10 | 2.50 | A-A, lean/blue |
| Cd | 228.80 | 0.7 | 0.01 | 2 | 2.00 | A-A, lean/blue |
| Cr | 357.90 | 0.7 | 0.04 | 2 | 5.00 | A-A, rich/yellow |
| Cu | 324.80 | 0.7 | 0.005 | 1.5 | 5.00 | A-A, lean/blue |
| Pb | 283.30 | 0.7 | 0.08 | 5 | 20.00 | A-A, lean/blue |
| Ni | 232.00 | 0.2 | 0.05 | 2.5 | 4.00 | A-A, lean/blue |