Inductively Coupled Plasma with Atomic Fluorescence Spectrometry ICP-AFS

4 Inductively Coupled Plasma with Atomic Fluorescence Spectrometry (ICP-AFS) 

Atomic fluorescence is the process of radiation activation followed by radiation deactivation, unlike atomic emission which depends on the collisional excitation of the spectral transition. For this, ICP is used to produce a population of atoms in the ground state and a light source is required to provide excitation of the spectral transitions. Whereas a multitude of spectral lines from all the accompanying elements are emitted by the atomic emission process, the fluorescence spectrum is relatively simple, being confined principally to the resonance lines of the element used in the excitation source. 

Good results have been obtained using a high-power (6 kW) ICP as a source and a low-power ( 1 kW) plasma as an atomiser. 

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