Atomic Absorption Spectrophotometer – A3F-PA
overview:
The A3 Atomic Absorption Spectrometer is a high performance automated instrument designed to meet the requirements of the modern laboratory. Due to its versatility and performance it can be used for a wide range of applications.
Three flame options are available to the user with the Air/Acetylene being the standard configuration. This flame can be used for nearly all standard elements while the N2O/Acetylene and the Air/LPG (natural gas) are available as an option for the more demanding of elements. All three flame configurations offer coded burner for full safety protection.
The graphite head is fixed into the optical path to maximize performance and eliminate drift. The temperature of the transversely heated graphite tube is accurately controlled by means of a precision feedback system. Pyrolytically coated platform tubes are supplied as standard to improve the performance and eliminate many analytical problems associated with this technique.
The flame and graphite furnace can be changed over by a simple selection in versatile AA Win Pro software.
Key Features
- Easy to use, complete software control
- Integrated safety precautions for user protection
- Flexible configuration for a wide array of industrial apps
- Time-saving high speed analysis
Specifications
| Model:Flame AA System-A3F, Graphite AA System-A3G, Combined Flame and Graphite Furnace AA System-A3FG | |
| 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 | <0.05 nm |
| Spectral bandwidth | 0.5, 1.0, 2.0, 5.0 nm |
| Baseline stability | 0.005 A/30 min |
| Stray light | ≤0.12 %T (220 nm NaI, 340 nm NaNO2) |
| Background correction | Deuterium Arc (D2) 1.0 Abs, Self Reversal (SR) 3.0 Abs |
| Flame Analysis | |
| Flame types | Air/Acetylene, Nitrous Oxide/Acetylene, Air/Propane (LPG) |
| Sensitivity (Cu) | 2 μg/ml Absorption >0.280 Abs |
| Characteristic concentration | Cu<0.02 μg/ml, Ba<0.15 μg/ml (N2O/Acetylene) |
| Detection limit | Cu<0.004 μg/ml |
| Repeatability | Cu<0.7 % (Air/Acetylene Flame) Ba<1.0 % (Nitrous Oxide/Acetylene Flame) |
| Burner heads | Titanium alloy |
| Nebulizer | High efficiency glass, Acid proof available as an option |
| Pre-mix chamber | Corrosion resistant |
| Atomizer selection | Manual (A3F) Automatic changeover (A3FG) |
| Safety features | Burner identification, 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<0.004 ng/ml |
| Repeatability | Cu<2.0 %, Cd<2.0 % |
| Graphite tubes | Pyrolytically coated with platform |
| Sample size | Up to 20μl |
| Graphite cooling | Water circulator available |
| Safety features | Burner Identification, Flame Sensor, Gas leak Sensor, Low Gas Pressure Sensor, Drain Trap Sensor, Power Loss Protection, Circulation Water (graphite), Over Temperature Sensor (graphite) |
| Data Processing | |
| Operating program | AA Win Pro 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 | 380VAC 50/60Hz, instantaneous power 5 kW current rating 7 kW |
| Dimensions | |
| Main unit | 44 x 21 x 21 in 165 lb |
| Graphite power supply | 20 x 21 x 21 in 154 lb |