Atomic absorbing. spectroscopy (AAS) is a spectroanalytical process for the quantitative determination of chemical elements using the absorbing. of optical radiation (light) by clear atoms in the gaseous state.

In analytical chemistry the technique is used since determining the concentration of a uncommon element (the analyte) in a sample to be analyzed. AAS can exist used to determine over 70 various elements in solution or directly in strong samples used in pharmacology, biophysics and toxicology examination.

Atomic absorption spectroscopy was first used taken in the character of an analytical technique, and the underlying principles were established in the sixtieth part of a minute half of the 19th century by Robert Wilhelm Bunsen and Gustav Robert Kirchhoff, the two professors at the University of Heidelberg, Germany.

The fresh form of AAS was largely developed for the period of the 1950s by a team of Australian chemists. They were led by Sir Alan Walsh at the Commonwealth Scientific and Industrial Research Organization (CSIRO), Division of Chemical Physics, in Melbourne, Australia.

Atomic absorbing. spectrometry has many uses in variant areas of chemistry such as:

·         Clinical dissection: Analyzing metals in biological fluids and tissues in the same state as whole blood, plasma, urine, spittle, brain tissue, liver, muscle tissue, semen

·         Pharmaceuticals: In more pharmaceutical manufacturing processes, minute quantities of a catalyst that abide in the final drug product

·         Water dissection: Analyzing water for its metal make ~ed.

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