AAS (Atomic absorption spectrophotometer)


Central Facilities   

  Atomic absorption spectrophotometer (AAS)

Model : Varian SpectrAA 880.

  Principle

The atomic absorption spectrometry (AAS) is an analytical method based on the absorption of UV or visible light by gaseous atoms. The sample becomes atomized by injecting a solution into a flame or by heating a dried sample in an energized graphite tube. As source of light, a hollow-cathode lamp is used to determine the contained element. These element's atoms in the flame absorb precisely the wavelength sent by the source of light. The absorption is proportional to the concentration.

 Application

Atomic absorption spectrometry (AAS) is an analytical technique that measures a number of elements in very low concentrations. Atomic absorption spectrometry has many uses in different areas of chemistry like clinical analysis, environmental analysis besides analysis of rocks, ores and minerals.

 Material needed for analyses

AAS is also a solution technique. Samples are first converted into solution form.

 
   
 
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