MULTIELEMENT DETERMINATION WITH SOLID SAMPLING BY LASER-ABLATION USING ELECTROTHERMAL ATOMIZATION AND CONTINUUM SOURCE COHERENT FORWARD SCATTERING SPECTROMETRY

Laser ablation allows fast and easy sampling of solids with a spatial resolution of some mu m vertical and some 30 mu m lateral. The deposit ion of the laser generated aerosol in a graphite furnace in combinatio n with continuum source CFS allows simultaneous multi-element analysis and the use of internal standards. The aerosol is transported into th e graphite furnace with the inert gas flow and deposited by means of a corona discharge inside the tube. The deposition efficiency shows an enhancement by about three orders of magnitude, compared to the deposi tion without a field. The analytical precision and accuracy has been t ested with metals and mineral samples as glassy cinder from a waste in cineration plant.