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Instrument Database:
Thermo Jarrel-Ash - Quadrion (POEMS)
( Thermo Scientific )
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| Year of introduction |
1993 |
| Status |
historical ( out of sale ) |
| Company |
Thermo Jarrel-Ash
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| Categories |
Mass spectrometer: ICP-MS
Spectrometer ( Atom. ): AES: ICP-AES
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Thermo Jarrell Ash takes a different strategy with Quadrion by adding an optical emission spectrometer accessory to create an instrument that prescreens samples for concentration range. This hybrid system, known as POEMS (plasma optical emission MS), combines the charge-injection device optical detector with the MS detector for simultaneous analysis of trace and major elements. POEMS also offers the possibility of screening samples followed by automated dilution. Or the analyst can set up criteria by which to select either optical or mass analysis based on a particular element or concentration range.
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| Specifications |
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Dimensions (w x d x h in cm)
| 198 x 91 x 122
| Weight (kg)
| 500 + (34 water cooler, 63 roughing pump, 37 refrigerator)
| Power
| 200/208/220/240 V AC, 50/60 Hz, 30 amps | | Mass filter | Hyperbolic Quadrupole using 12 x 250 mm rods with theoretically perfect geometry | | Mass range | 1-300 amu | Resolution
| 0.3 to 3.0 amu, software selectable | Detector
| MS: discrete dynode electron multiplier (channeltron electron multiplier optional) | Dynamic range (orders of magnitude)
| 6 pulse counting; 4 analog extended rang; 8 overlapping; 5 optical; 11 total | Optical Spectrometer
| 0.381 m Echelle Cross Dispersion Spectrograph ; F/10, gas purged | | Grating | 54.5 grooves/mm, ruled, 46.5° blaze angle | Wavelength range
| 175-900 (unrestricted) | | Resolution | < 10 pm at 200 nm< 20 pm at 400 nm< 40 pm at 600 nm | | Detector | CID 196 mm2, 512 x 512 (262,144) pixels with ranbdom access integration, non-destructive read out, destructive read out, and transient evaluation modes | Vacuum system
| 3-stages (1st stage: mechanical roughing pump, 2nd stage: turbo molecular pump, 3rd stage: turbo molecular drag pump) | ICP generator
| crystal-controlled | | Frequency (MHz) | 27.12 (40.68 optional) | Power (Watt)
| 750-1750 (6 steps computer controlled) | Load coil
| directly coupled autotune impedance control | Torch
| demountable quartz torch with ceramic base and replaceable injector
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| Sample introduction
| Nebulizer: Meinhard (Optional Cross-flow, Babington, USN) Spraychamber: Cyclonic glass (cooled cyclonic glass, HF-resistant)
Pump: 8-rollers 3-channels
| Operating system and software
| Windows 3.1
| | Computer | 80486, 16 MB RAM, 180 MB hard disk, VGA high resolution color graphics | Short term precision (RSD for 10 replicates)
| < 3% | Long term precision (RSD for 4 hours)
| < 4% | Sensitivity (Mcps/ppm)
| 10 Ho; 8 Li,Co,In,Bi | Detection limits (3s, ng/L)
| < 2 Bi,In, Tb; <5 Cu, Pb; <10 Cd | | Isotope ratio precision (RSD for Ag-107/Ag-109) | < 0.3 % | Doubly charged Ba ions
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| | Ce Oxide ions | < 0.011 | Accessories
| USN, autosampler, autodilutor, HF-resistant sample introduction, organic sample injector, spark ablation, laser ablation, hydride generator
| | Special features |
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