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 | Thermo Fisher Scientific | Thermo Fisher Scientific | Thermo Fisher Scientific |
| Item | iCE 3500 AAS Atomic Absorption Spectrometer | iCE 3300 AA Spectrometer | iCE 3400 AA Spectrometer |
| Price | | | |
| Lamps | 6 (coded, auto-aligning carousel) | 6 (coded, auto-aligning carousel) | 6 (coded, auto-aligning carousel) |
| Beam Configuration | Double beam (Stockdale optics) | Double beam | Self-referencing Zeeman system |
| Wavelength Range | 180-900 nm | 180–900 nm | 180–900 nm |
| Lamp Type | Dual atomizer (flame and furnace) | Hollow Cathode Lamp (HCL) | Hollow Cathode Lamp (HCL) |
| Vaporization | Flame (air/acetylene and nitrous oxide/acetylene) and Graphite Furnace | Flame (50 mm Ti burner) | Graphite Furnace, Vapor |
| Sensitivity | Guaranteed Quadline deuterium or AC Zeeman background correction; Echelle monochromator; dynamic optical temperature feedback up to 3000 degrees C/sec; Extended Lifetime Cuvettes (ELC) | Quadline deuterium background correction with guaranteed performance; spectral bandwidths 0.2, 0.5, and 1.0 nm; Ebert monochromator | Guaranteed Quadline deuterium and AC Zeeman background correction; Echelle monochromator; dynamic optical temperature control up to 3000 degrees C/sec |
| Description | High performance, dual atomizer, double beam AA Spectrometer with software-controlled flame/furnace switching | High performance, versatile, double beam Atomic Absorption Spectrometer for flame analysis with optional graphite furnace upgrade | High performance, dedicated graphite furnace Atomic Absorption Spectrometer with Zeeman and deuterium background correction |
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