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What are the selection rules for AAS?
Accepted Answer
According to the Beer-Lambert law, the absorbance of a sample is directly proportional to the concentration of the analyte and the path length of the light beam through the sample. The selection rules for AAS are based on the electronic transitions of the analyte atoms. For an atomic absorption transition to occur, the following selection rules must be obeyed:
1. The transition must be an allowed electronic transition.
2. The transition must be a resonant transition.
3. The transition must be a one-electron transition.
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