%0 journal article,GKSS report %@ 0584-8547 %A Prange, A.,Kramer, K.,Reus, U. %D 1991 %J Spectrochimica Acta B %N 10 %P 1385-1393 %T Determination of trace element impurities in ultrapure reagents by total reflection X-ray spectrometry %U 10 %X