TY - JOUR A1 - Gopala, Anil A1 - Zellmann, M. A1 - Kipphardt, Heinrich A1 - Jakubowski, Norbert A1 - Panne, Ulrich T1 - Mass spectrometric study of the impurity profile in Zn during reduction-distillation of ZnO with activated and inactivated Al T2 - Journal of the American society for mass spectrometry N2 - In this work, we report on the application of hyphenated gas source mass spectrometry to study and understand the mechanism of the reduction-distillation of ZnO using Al powder as reductant in its activated and inactivated form. The experiments revealed that the purity of the Zn metal produced were superior using activated Al with respect to inactivated Al, i.e., m5N8 (99.9998% metallic based) versus m5N3. The achieved purity levels of Zn and the absence of high volatile Cd, Mg, and Sb impurities in the gas phase and the material collected were explained with respect to the impurity elements free-energy values, vapor pressure data, and an observed scavenging effect of the Ta crucible, which was supported by the on-line observed mass spectrometric profiles of the residual gas. PB - Elsevier CY - New York, NY PY - 2010 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/21910 AN - OPUS4-21910 SN - 1044-0305 VL - 21 IS - 9 SP - 1620 EP - 1623 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany