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AA900 Atomic Absorption Spectrometer PG Instrument |
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Specifications |
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Model |
AA990F : Flame AA System |
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AA990G : Graphite AA System |
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AA990FG : Combined Flame and Graphite Furnace AA System |
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Spectrometer System |
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Wavelength range |
190-900 nm |
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Light source |
Hollow cathode lamp (HCL), Deuterium Arc lamp (D2) |
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Modulation |
Square wave pulse |
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Modulation frequency |
100 Hz self reversal (SR) background, |
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400 Hz Deuterium Arc (D2) background |
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Monochromator |
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Grating |
1800 grooves/mm diffraction grating |
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Blazed wavelength |
250 nm |
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Focus |
300 nm |
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Bandwidth |
0.1, 0.2, 0.5, 1.0, 2.0, 5.0 nm |
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Scan mode |
Automatic |
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Photometric type |
Single beam |
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Wavelength accuracy |
±0.15 nm |
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Wavelength resolution |
0.2 nm±0.02 nm |
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Wavelength reproducibility |
<0.05 nm |
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Spectral bandwidth |
0.5, 1.0, 2.0, 5.0 nm |
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baseline stability |
0.005 A/30 min |
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Background correction |
Deuterium Arc (D2) 1.0 Abs, |
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Self Reversal (SR) 3.0 Abs |
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Flame Analysis |
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Flame type |
Air/acetylene |
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Sensitivity (Cu) |
2 μg/ml Absorption>0.280 Abs |
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Characteristic Concentration |
Cu<0.02 μg/ml |
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Detection limit |
Cu<0.004 μg/ml |
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Repeatability |
Cu<0.7 % |
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Burner head |
Titanium Alloy |
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Nebulizer |
High–efficiency glass, |
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acid proof available as an option |
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Pre-mix chamber |
Corrosion resistant |
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Atomizer selection |
Manual (AA990F) |
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Automatic changeover (AA990FG) |
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Safety features |
Burner switch, flame sensor, gas leak sensor, low gas pressure sensor, drain trap sensor, power loss protection |
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Graphite Furnace Analysis |
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Graphite head |
Transversally heated |
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Temperature range |
Ambient-2650 ℃ |
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Heating program |
Up to 10 steps. Drying, Ashing, Atomization, Cleaning |
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Feedback |
Voltage and optical temperature control feedback |
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Sensitivity (Cu) |
50 ng/m Absorption>0.40 Abs |
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Detection limit |
Cd<0.004 ng/ml |
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Repeatability |
Cu<2.0%, |
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Cd<2.0% |
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Graphite tubes |
Pyrolytically coated with platform |
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Sample size |
Up to 20μl |
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Graphite cooling |
Water circulator available |
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Safety features |
Burner Switch |
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Flame Sensor |
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Gas leak Sensor |
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Drain Trap Sensor |
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Power Loss Protection |
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Circulation Water ( graphite ) |
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Over Temp. Sensor ( graphite ) |
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Data Processing |
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Operating program |
AA Win software |
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Analytical methods |
Flame AA |
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Flame AE |
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Graphite Furnace |
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Hydride Generation |
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Readout Mode |
Continuous, manual, peak height, peak area |
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Calibrations |
Multi-standard calibration, standard addition, interpolation |
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Data storage |
Analytical results, instrument and measurement parameters, signal profile, calibration curve |
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Power Requirements |
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Main unit |
220 VAC 50/60 Hz 200 W |
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Graphite power supply |
380 VAC 50/60 Hz |
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Instantaneous power 5 kW current rating 7 kW |
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Dimensions |
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Main unit |
44× 20 × 20 in |
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158 lb |
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Graphite power supply |
20 × 20 × 18 in |
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154 lb |
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