Theoretical Basis of Analytical Atomic Fluorescence Spectroscopy

THEORETICAL BASIS OF ANALYTICAL ATOMIC FLUORESCENCE SPECTROSCOPY 

Winefordner and Vickers (see footnote 1) have presented the theoretical basis for the use of atomic fluorescence as an analytical technique. This development closely follows their original work. 

The intensity of the fluorescence emission is proportional to the quantity of absorbed radiant energy, so 

The relation that exists between the absorbed power and incident power is 

The half-width Av can be evaluated if the absorption line profile is assumed to be triangular. Since a line profile is a Gaussian distribution, this becomes a good approximation. Under these conditions, the relation 

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