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Instrument Database:
VG Elemental - PQ 2/PQ2 Plus
( Thermo Scientific )
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| Year of introduction |
1988 |
| Status |
historical ( out of service ) |
| Company |
VG Elemental
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| Categories |
Mass spectrometer: ICP-MS
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The PlasmaQuad PQ 2 is a enhanced version of the PlasmaQuad instrument. The housing size has been reduced, software has been enhanced.
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| Specifications |
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Dimensions (w x d x h in cm)
| 170 x 70 x 151 (spectrometer)
| Weight (kg)
| 550
| | Power | 3 phase, 20 A each, 415 V, 10 kVA | | Mass filter |
| Mass range
| 0-300 amu | Resolution
| 1M and 3M over the mass range | | Detector | Ion counting system/analog detection | Dynamic range (orders of magnitude)
| 6 (8 PQ 2 Plus with EDR, analog/digital detection system) | | Vacuum system | 3 stage differentially pumped system; diffusion pumps on expansion and analyser stage | | ICP generator | Frequency-stabilized | | Frequency (MHz) | 27.12 | Power (Watt)
| 2000 (2500 optional) | Load coil
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| Torch
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| Argon flow (L/min)
| 13 | | Sample introduction |
| Operating system and software
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| | Computer | PQ 2: 80286; PQ 2 Plus: 80386 Processor, 4 MB RAM | Short term precision (RSD for 10 replicates)
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| | Long term precision (RSD for 4 hours) |
| Sensitivity (Mcps/ppm)
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| Detection limits (3s, ng/L)
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| | Isotope ratio precision (RSD for Ag-107/Ag-109) |
| | Doubly charged Ba ions | < 2% | | Oxide ions BaO/Ba | < 0.2% | Accessories
| laser ablation; 200 positionn autosampler, ETV, HPLC software, Flow-injection | | Special features | Reporting following EPA recommendations, automated optimization, interference identification |
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