Atomic absorption spectrophotometry analyzes the concentration of elements in a liquid sample based on energy absorbed from certain wavelengths of light (usually 190 to 900 nm). Atomic absorption spectrophotometers typically include a flame burner to atomize the sample (most commonly a hollow cathode lamp), a monochromator, and a photon detector. Depending on the model, some atomic absorption spectrometers are equipped with a turret or fixed lamp socket that can hold multiple lamps (up to eight) to reduce downtime between samples or allow for sequential analysis.
Typical sensitivity for an atomic absorption spectrometer using a flame burner is in the parts per million range. For trace analysis, a graphite furnace can be used in place of a flame burner to increase the sensitivity by several orders of magnitude (in the parts per billion range). Atomic absorption spectrophotometers are used in many industries including environmental testing, metal analysis, semiconductor manufacturing, petroleum and chemical production, and in pharmaceuticals, for example.
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| Company | Agilent Technologies | Agilent Technologies |
| Item | 280Z AA Atomic Absorption Spectrometer | 240Z AA Atomic Absorption Spectrometer |
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| Reviews | | |
| Catalog Number | 280Z AA | 240Z AA |
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| Beam Configuration | Double Beam | Double Beam |
| Wavelength Range | 185-900 nm | Inquire |
| Lamp Type | Hollow Cathode and UltrAA lamp | Hollow Cathode and UltrAA lamp |
| Vaporization | Zeeman graphite tube atomizer | Zeeman graphite tube atomizer |
| Sensitivity | Inquire | Inquire |
| Description | Based on the sensitive AC-modulated Zeeman technique, proven to give the best detection limits of any Zeeman spectrometer, the Agilent 280Z AA offers the highest sensitivity, performance, simplicity of operation, and industry-leading software in atomic spectroscopy.
The 280Z AA provides up to eightBased on the sensitive AC-modulated Zeeman technique, proven to give the best detection limits of any Zeeman spectrometer, the Agilent 280Z AA offers the highest sensitivity, performance, simplicity of operation, and industry-leading software in atomic spectroscopy.
The 280Z AA provides up to eight fixed lamp positions. It is supplied with the GTA120 Zeeman graphite tube atomizer for superior graphite furnace performance and is controlled by our acclaimed Windows-based Worksheet software.
Features - Enhanced detection limit performance – For ultra trace-level detection limits, plug in high-intensity UltrAA lamps. No additional power supply is required.
- Optimized performance – PC-controlled magnetic field strength can be varied from 0.1 – 0.8 Tesla.
- Field strength remains locked during measurement, minimizing effects of mains voltage variations.
- Versatility – Add the VGA for Zeeman adaptor and the hydride generation technique to validate Zeeman graphite furnace AA results.
- Offers the flexibility to analyze difficult matrices.
- Outstanding performance at ppb levels with the Constant Temperature Zone furnace design
- Easy alignment — Only a single light source is required.
- 11-fold improvement in correction accuracy — Polynomial interpolation provides superior accuracy over competing systems that use simple linear interpolation (bracketing).
- Develop optimum analysis conditions with the SRM Wizard and Tube-CAM — Drying, ashing and atomization temperatures, modifiers, injection volumes ensure high sensitivity, free from interferences.
... Read More | The Agilent 240Z AA is a sensitive and accurate graphite furnace AA spectrometer. Its design uses the Zeeman background technique proven to provide high correction accuracy with optimized geometry to give the best detection limits. The Agilent 240Z AA has 4 lamp positions to suit most routine food, The Agilent 240Z AA is a sensitive and accurate graphite furnace AA spectrometer. Its design uses the Zeeman background technique proven to provide high correction accuracy with optimized geometry to give the best detection limits. The Agilent 240Z AA has 4 lamp positions to suit most routine food, environmental and pharmaceutical applications analysis requiring the very best performance.
The 240Z AA features automatic lamp selection, an integrated PSD120 autosampler able to accurately prepare and deliver standards and samples to the graphite tube. It features tools to simplify method development and monitor analysis.
Features - Outstanding performance at ppb levels with the Constant Temperature Zone furnace design
- High sensitivity and freedom from interferences
- Flexibility to analyze difficult matrices
- Simplified, automated method development to optimize analysis conditions with the SRM Wizard
- High Definition Tube-CAM to monitor analysis inside the graphite tube
- Enhanced detection limit performance — For ultra trace-level detection limits, plug in high-intensity UltrAA lamps
- Easy alignment — Only a single light source is required
- Powerful 11-fold improvement in correction accuracy — Polynomial interpolation provides superior accuracy over competing systems that use simple linear interpolation (bracketing)
- Versatility — Add the VGA for Zeeman adaptor and the hydride generation technique to validate Zeeman graphite furnace AA results
... Read More |
| Quantity | EA | EA |
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