Research Article
Determination of 18 Trace Elements in 10 Batches of the Tibetan Medicine Qishiwei Zhenzhu Pills by Direct Inductively Coupled Plasma-Mass Spectrometry
| ICP-MS system | Working parameters |
| RF power | 1.3 kW | Carrier gas velocity | 1.14 L/min | Sampling depth | 6.8 mm | Auxiliary gas flow rate | 0.9 L/min | Residence time per point | 20 ms | Vertical position of rectangular tube | 1.8 mm | Horizontal position of rectangular tube | 0.6 mm | Atomizer | Babington | Atomization chamber flow rate | 0.98 L/min | Atomization chamber pressure | 2.85 × 105 Pa |
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