DETERMINATION OF THE OXYGEN BALANCE IN OXIDE SUPERCONDUCTORS BY A PHOTOMETRIC-METHOD

被引：3
|
作者：
MALKOVA, Z
NOVAK, J
HAMPLOVA, V
POKORNA, Z
机构：
[1] Institute of Physics, Academy of Sciences of the Czech Republic, Prague 8, CS-18040
来源：
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1993年 / 347卷 / 12期
关键词：
D O I：
10.1007/BF00324237
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A photometric method is described for determining the oxygen balance in oxide superconductors. It is based on the oxidation of Fe2+ to Fe3+ by the superconductors and the following determination of the residual Fe2+ ions as complex with 1,10-phenanthroline. Hydrobromic acid is used for dissolving the samples. The method has been developed for 1 0 mg sample weights. Good reliability of the method was verified by comparison with the cerimetric determination using 80 mg samples.
引用
收藏
页码：478 / 479
页数：2
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