Investigations on the analysis of heavy metals in solids by direct Zeeman atomic absorption spectroscopy. Pt. 2

The theory of the Zeeman effect and the different types of linebroadening effects are presented as the basis of a discussion about the principle of Direct ZAAS compensation (lamp in the magnetic field). The performance of the ZAA-spectrometer SM 1 and the function of the single components are described. The spectroscopic properties depending on magnetic field strength, self-absorption and atom density are demonstrated and explained. With these tools it is possible to interpret and optimise these phenomena, which are unknown in normal AAS. The ability and the limits of compensation by Direct ZAAS are shown and compared with the deuterium compensation technique. Different types of spectral interferences (continuum and structured background, line overlapping) are discussed. All considerations are directed to the direct analysis of solid samples. (orig.)