Research Article
Multielement Principal Component Analysis and Origin Traceability of Rice Based on ICP-MS/MS
Table 2
Instrument parameters of ICP-MS/MS.
| | Instrument conditions | No-gas mode | H2 mode | He mode | O2 mode | NH3/He mode |
| | Q1 deflection voltage(V) | −3.0 | 1.0 | −3.0 | 1.0 | 1.0 | | Q2 deflection voltage(V) | −3.0 | −18.0 | −15.0 | −10.0 | −12.0 | | Collision pool gas | — | H2 | He | O2 | NH3/He | | Gas flow rate of collision pool (L·min−1) | — | 7.0 | 5.0 | 4.5 | 4.5/1.0 | | Deflection voltage of eight-stage pole (V) | −8.0 | −18.0 | −18.0 | −3.0 | −5.0 |
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