Research Article
High-Accuracy Determination of Potassium and Selenium in Human Serum by Two-Step Isotope Dilution ICPMS
| Parameter | K | Se |
| ICP RF power (W) | 1100 | 1100 | Gas flows (L/min) | 0.97 | 0.97 | Lens voltage (V) | 6.75 | 6.75 | Analog stage voltage (V) | −1700 | −1700 | Pulse stage voltage (V) | 900 | 900 | Dwell time per AMU | 2ms | 2ms | Scan mode | Peak hopping | Peak hopping | Sweeps/reading | 25 | 25 | Readings/replicate | 20 | 25 | Replicates | 15 | 25 | Cell gas A : CH4 (mL/min) | 1.5 | 0.8 | RP q: Ar (mL/min) | 0.8 | 0.45 |
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