A contribution to the trace analysis of high-purity iron by atomic spectrometry (flame-AAS, furnace-AAS, ICP-OES) |
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| Authors: | Joeng-Shein Chen Harald Berndt Günther T?lg |
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| Affiliation: | (1) Institut für Spektrochemie, Bunsen-Kirchhoff-Strasse 11, D-4600 Dortmund 1, Federal Republic of Germany;(2) Laboratorium für Reinststoffanalytik, Max-Planck-Institut für Metallforschung Stuttgart, Bunsen-Kirchhoff-Strasse 13, D-4600 Dortmund 1, Federal Republic of Germany;(3) Present address: Materials Research Laboratories, ITRI, 195-5 Chung Hsing Rd., Section 4 Chutung, 31015 Hsinchu, Taiwan, ROC |
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| Abstract: | Summary Various possibilities for the determination of trace impurities in high-purity iron by atomic spectrometry were investigated in detail. For Ba, Bi, Cd, Co, Cr, Cu, Mn, Ni, Pb, Ti and V, flame AAS, furnace AAS and ICP-OES were firstly evaluated in terms of their power of detection. Detection limits in the  g/g-range could be achieved by direct determination. For determination in the ng/g-range a removal of iron by a solvent extraction technique prior to the instrumental measurement was required. The power of detection of direct determination, and of combined procedures were compared with regard to routine applicability and a minimization of systematic errors. |
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