Analytical Chemistry - Atomic Absorption

ATOMIC ABSORPTION

Atomic Absorption Spectrometry (AAS)	Sampling Techniques for Atomic Absorption Spectrometry
Light sources for atomic absorption	Quantitative Analysis by Atomic Absorption
Advantages and Disadvantages of Atomic Absorption Spectrometry and Graphite Furnace

 

Atomic absorption spectrometry (AAS) is an analytical technique that measures the concentration of an element by measuring the amount of light (intensity of light) that is absorbed - at a characteristic wavelength - when it passes through a cloud of atoms of this element. As the number of atoms in the light path increases, the amount of light absorbed increases in a predictable way. Modern atomic absorption spectrometry was introduced in 1955 as a result of the independent work  of A. Walsh and C.T.J Alkemade. Commercial atomic absorption spectrophotometers were introduced by the early 1960’s, and the importance of atomic absorption as an analytical technique was soon evident.

 

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References

1. (a) A. Walsh, Anal. Chem., 63, 933A–941A, 1991 (b) S.R. Koirtyohann, Anal. Chem., 63, 1024A–1031A, 1991 (c) W. Slavin, Anal. Chem., 63, 1033A–1038A, 1991.

2. D. Harvey,  “Modern Analytical Chemistry”, McGraw-Hill Companies Inc., 2000

3. D.A. Skoog, F.J.  Holler, T.A.  Nieman,  “Principles of Instrumental Analysis”. Saunders College Publishing: Philadelphia, 1998.

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