Trace impurities in aluminum were determined. Manganese, nickel, copper, cobalt and iron were analyzed by the metod of activation analysis at the THOR, while sodium and potassium were determined by flame photometry. The results were: Mn 0.00066%, Ni 0.00041%, Cu 0.00060%, Co 0.00010%, Fe 0.12% and Na 0.0048%. K was not detected by flame photometry.