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For Atomic Absorption Spectroscopy and Atomic Emission Spectroscopy, one method can do multi-element while the other...

For Atomic Absorption Spectroscopy and Atomic Emission Spectroscopy, one method can do multi-element while the other can only do single element analysis. Which method would be preferred for determining concentration of a known contaminant in a complex matrix & why?

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Answer #1

Atomic Absorption Spectroscopy would be preffered for determining concentration of known contaminant in a complex matrix like analysis of Rock samples, Soil Samples, or Stream Sediments over Atomic Emission Spectroscopy for the following reasons

1. According to the Beer-Lambert Law, it is a linear relationship that exists between the atomic absorption and the concentration of the species.

2. In both AAS and AES elements are atomized and either adsorbance or emission is measure, Since the lifetime of atoms is less atomic absorption will give accurate results over emission.

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