An emission spectrographic method employing de-are excitation has been described for the determination of Bi, Cr, Cu, Fe, Mg Mn, Ni, Pb, Si and Zn in aluminum base materials. The samples were dissolved in nitric acid, dried and converted to oxide form by heating in a tube furnace at 900 degrees C under oxygen atmosphere before analysis. Treated samples were mixed with graphite in 2:1 ratio and excited in 10 Amp dc-are for 30 seconds. The lowest detection limits for different elements lie between 10 and 40 ppm.
R HUSSAIN ,S HUSSIAN ,D MOHAMMAD ,
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