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