Table 2.
ICP-MS | |
Instrument | ELAN 9000 PerkinElmer Sciex ICP |
As isotope mass | 74.9216 |
In internal standard isotope mass | 114.904 |
Acquisition modes | Scanning |
Scan mode | Peak hopping |
Dwell time | 50 ms |
Channels/amu | 1 |
Passes/scan | 60 |
Scans/sample | 3 |
Nebulizer type | Concentric |
Sample uptake flow rate | 10 (arbitrary units) |
Carrier gas | 0.91 L/minute |
RF power | 1,100 W |
Lens voltage | 7.5 V |
Analog-stage voltage | −1,600 V |
Pulse-stage voltage | 800 V |
Desolvation temperature | 140°C |
Abbreviations: ICP-MS, inductively coupled plasma mass spectrometry; RF, radiofrequency; amu, atomic mass unit; As, arsenic.