Atomic Fluorescence Analysis Research Articles

Vergleich von atomabsorption und atomfluoreszenz in der graphitküvette

Heated graphite cells are used for atomic absorption and atomic fluorescence analysis in place of the customary flame. The samples are evaporated by electrical resistance heating of the cell in an argon atmosphere. With both methods a high power of detection for many elements can be achieved. For the determination of zinc and cadmium the detection limits are lower with atomic fluorescence, whereas in the case of silver both techniques are nearly equivalent. But for all other elements studied up to now the measurement of atomic absorption is to be preferred. But it can safely be predicted that with atomic fluorescence the limits of detection of the latter elements can be considerably lowered as soon as better primary light sources become available.