caa a22 4500 469129441 CHVBK 20180323133200.0 cr unu---uuuuu 170328e19920601xx s 000 0 eng 10.1007/BF00324987 doi (NATIONALLICENCE)springer-10.1007/BF00324987 Determination of Cu3+, Bi5+ and Pb4+ in high Tc superconducting oxides by Cl2 generation, or by O2 together with Cl2 generation [Elektronische Daten] [Michiko Namiki, Kichinosuke Hirokawa] Summary: For estimating the values corresponding to the oxygen defects in high Tc superconducting oxides, iodometry has been applied for the determination of Cu3+ and Cu2+. The presence of Bi or Pb causes some difficulty in the identification of the end point of this titration, because of the formation of iodine complexes. Therefore, chlorine generation from HCl and iodometry was applied for the determination of Bi5+ or Pb4+ in the oxides, and for the additional determination of Cu3+, O2 generation was used together with Cl2 generation for Bi5+ or Pb4+. Springer-Verlag, 1992 Namiki Michiko Institute for Materials Research, Tohoku University, Sendai, Japan aut Hirokawa Kichinosuke Institute for Materials Research, Tohoku University, Sendai, Japan aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 344/6(1992-06-01), 265-268 0937-0633 344:6<265 1992 344 216 https://doi.org/10.1007/BF00324987 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00324987 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Namiki Michiko Institute for Materials Research, Tohoku University, Sendai, Japan aut NATIONALLICENCE 700 1- Hirokawa Kichinosuke Institute for Materials Research, Tohoku University, Sendai, Japan aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 344/6(1992-06-01), 265-268 0937-0633 344:6<265 1992 344 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer