Table 3.
Instrument parameter of microwave digestion.
| Step | Ramp time (min) | Hold time (min) | Temperature (°C) | Power (W) |
|---|---|---|---|---|
| 1 | 10 | 10 | 150 | 1650 |
| 2 | 5 | 20 | 175 | 1650 |
| 3 | 5 | 30 | 200 | 1650 |
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