Table 3 Programs of heating method for chromium (Cr), cadmium (Cd), cobalt (Co), lead (Pb), and selenium (Se) in graphite furnace atomic absorption spectrophotometer (GFAAS)
From: Comparative study of element contents in seven isolates of entomopathogenic nematodes
Steps | Temperature (°C) | Ramp(s) | Hold(s) | Argon flow rate (ml min−1) | ||||
|---|---|---|---|---|---|---|---|---|
| Â | Cd | Cr | Pb | Co | Se | Â | Â | Â |
Drying 1 | 150 | 150 | 150 | 150 | 150 | 5 | 20 | 250 |
Drying 2 | 200 | 200 | 200 | 200 | 200 | 5 | 15 | 250 |
Pyrolysis | 500 | 1600 | 800 | 1000 | 1200 | 10 | 20 | 250 |
Atomization | 1800 | 2300 | 2000 | 2300 | 2000 | 0 | 5 | 0 |
Clean-out | 2200 | 2500 | 2200 | 2600 | 2450 | 1 | 3 | 250 |