Measurements on the Zeeman-splitting of analytical lines by means of a continuum source graphite furnace atomic absorption spectrometer with a linear charge coupled device array

A spectrometer for time-resolved high-resolution spectroscopic measurements of line splittings in inverse Zeeman effect corrected atomic absorption spectrometry is presented. The system consists of a continuum source, a longitudinal Zeeman-THGA module, a high-resolution double echelle monochromator, and a linear CCD array. Splitting patterns of atomic lines in a magnetic field have been determined and are compared with theory. The continuum source atomic absorption spectrometer can be used for the investigation of spectra interferences in Zeeman corrected AA spectrometry. As an example, the background overcompensation at the cadmium 228.8 nm line in the presence of a Mg(NO3)(2) + NH4H2PO4 mixture is examined.