WAVELENGTH-DISPERSIVE X-RAY-FLUORESCENCE SPECTROMETRIC TECHNIQUE FOR DETERMINING ELEMENTS IN WELD FUMES

An x-ray fluorescence spectrometric method is described for the determ ination of elements present in the fumes evolved during welding. Synth etic standards were prepared using salts of Si, Mn, Cr, Fe, Pb, Cu, Al and Ni for evaluation. The standards were mixed with boric acid in th e ratio 1:1 and briquettes were prepared by the double pellet method. The samples were collected in filter-paper discs by exposing them duri ng welding. The average standard deviation of the method is about 7%.