NewsSpectroscopy
High-Resolution Continuum Source AAS – redefining AAS
19 Mar 2008Greg Smith
Analyst / Analytical Chemist
Product news
The contrAA® series exceeds the performance of conventional AA spectrometers in all parameters. With only one light source – Xenon lamp – for all elements and all available wavelengths, the instrument is ready to measure at all times. Previously, individual methods predominated; now the sequential multielement-routine has become standard.
This provides enormous savings in time and cost of materials. The unique resolution is decisive for the new quality of the measurement results. Interference is minimized through optimum line separation. Errors, which were caused by the limits of the resolution in traditional line AAS, can be identified for the first time and thereby avoided.
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Atomic Absorption / Emission SpectroscopyAtomic absorption spectroscopy (AAS) and atomic emission spectroscopy (AES) — also called optical emission spectroscopy (OES) — are used to detect the elemental constituents in samples. Both techniques involve the atomization of a sample. Atomic absorption spectrometers may use a flame or furnace to create an atomic vapor of the sample before irradiation with spectral light. Optical emission spectrometers may use a flame, inductively coupled plasma (ICP), microwave plasma (MP) or spark arcs to atomize and excite the sample. At higher excitation energies, electrons can be emitted instead of photons, which can be useful for samples that can’t be atomized and for surface analysis. Explore electron spectroscopy equipment such as Auger spectrometers and photoelectron spectrometers for surface elemental analysis of samples. Find the best atomic absorption, photoelectron and optical emission spectrometers in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Spectroscopy LampsMonochromators, filters and spectroscopy lamps are available for specific applications of spectroscopy instruments. Available spectroscopy lamps include xenon, hollow cathode, ultraviolet, tungsten, halogen, mercury and deuterium.