absorption spectrophotometer (AAS)
Varian SpectrAA 880.
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
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.
needed for analyses
AAS is also a solution
technique. Samples are first converted into solution form.