Atomic absorption spectrometry quantitative analysis, principles

Atomic Absorption Spectrometry. Principles of Quantitative Analysis... 

Due to its principle and instrumental realisation, atomic absorption spectrometry is a technique for quantitative analysis and is practically unsuitable for qualitative analysis. Quantitative response is governed by the law of Lambert and Beer, i. e. the absorption A is proportional to the optical pathlength I, the absorption coefficient k at the observed wavelength, and the concentration c of the species. 

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