Table 1.
Operating parameters for Varian 820-MS ICP-MS instrument
| RF Power | 1.4 kW |
| Plasma argon flow | 17 L min-1 |
| Auxiliary argon flow | 1.7 L min-1 |
| Nebulizer argon flow | 1.1 L min-1 |
| Sheath argon flow | 0.2 L min-1 |
| Sampling depth | 6.5 mm |
| Pump rate | 6 rpm; 0.2 L min-1 |
| Stabilization time | 20 s |
| Spray chamber temperature | 4 oC |
| Scan mode | Peak hopping |
| Dwell time | 20 ms |
| Points/peak | 1 |
| Scans/peak | 5 |
| Scans/replicate | 3 |
| Normal mode (non-CRI) | |
| Isotopes monitored |
55Mn, 63Cu, 65Cu, 66Zn, 68Zn, 75As, 95Mo, 98Mo, 110Cd, 111Cd, 114Cd, 118Sn, 120Sn |
| CRI mode settings | |
| CRI gas/port | H2 / Skimmer cone |
| CRI gas flow rate | 65 mL min-1 |
| Isotopes monitored |
23Na, 25Mg, 26Mg, 31P, 39K, 43Ca, 44Ca, 56Fe, 57Fe |