Flame Atomic Absorption Spectroscopy

(AA Standards)

•Flame Atomic Absorption is a very common technique for detecting metals present in samples.

•The technique is based on the principle that ground state metals absorb light at a

specific wavelength.

•Metal ions in a solution are converted to atomic state by means of a flame.

•When light of the correct wavelength is supplied, the amount of light absorbed is measured and

a reading for concentration can be obtained.

•Flame atomic absorption is a very accurate quantitative technique and also a good qualitative

technique.

•This is one of the main reasons it is the most widely used of the atomic absorption methods.

Flame atomic absorption spectroscopy (FAAS) is suitable for measurement of a limited range of elements present at concentrations greater than approximately 1μgml−1 in biological fluids, and for the analysis of solutions obtained from biological tissues at the completion of the sample preparation steps.