EVALUATION OF METHOD:
The method was developed using welding (shielded metal arc welding on stainless and mild steels) and brazing (StaFlo-45 brazing wire on copper) fume samples having loadings of 30-280 ตg filter (as
oxides). The method was validated for iron, nickel, chromium, and manganese [1,2,3], using the internal standard method. Copper, zinc, and cadmium were also evaluated but not validated. A 120-L sample will provide sufficient deposition to detect the above-mentioned elements at air concentrations of
one-half the current PEL for the compounds.