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An atomic fluorescence photometer reduces the elements to be analyzed in a sample solution to volatile covalent gaseous hydrides (or atomic vapors), and then introduces them into an atomizer with the help of carrier gas, where they are atomized in an argon-hydrogen flame to form ground state atoms
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The ground state atom absorbs the energy of the light source and becomes an excited state, and the excited state atom releases the absorbed energy in the form of fluorescence during the deactivation process, and the strength of this fluorescence signal is linearly related to the content of the element to be measured in the sample, so the content
of the element to be measured in the sample can be determined by measuring the fluorescence intensity 。 Advantages Non-dispersive system, short optical path, less energy lossSimple structure, low failure rate, high sensitivity, low detection limit, receiving multiple fluorescence spectral lines proportional to the intensity of the excitation light source, suitable for multi-element analysis using a blind tube detector, reducing flame noise linear range, high atomization efficiency of 3 orders of magnitude No matrix interference can be done valence analysis only use argon, low operating cost using argon hydrogen flame, strong ultraviolet transmission, small background interference
