IMPROVED IODOMETRIC METHOD FOR SIMULTANEOUS DETERMINATION OF NONSTOICHIOMETRIC OXYGEN AND TOTAL COPPER CONTENT IN YBCO SUPERCONDUCTORS

被引：5

作者：

NEDELTCHEVA, T ^{[1
]}

SIMEONOVA, P ^{[1
]}

LOVCHINOV, V ^{[1
]}

机构：

[1] BULGARIAN ACAD SCI,INST SOLID STATE PHYS,BU-1784 SOFIA,BULGARIA

来源：

ANALYTICA CHIMICA ACTA | 1995年 / 312卷 / 02期

关键词：

POTENTIOMETRY; IODOMETRY; YBCO SUPERCONDUCTOR; OXYGEN; COPPER;

D O I：

10.1016/0003-2670(95)00238-U

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Some improvements with regard to the iodometric method for the determination of the total copper and non-stoichiometric oxygen (or Cu3+) content in YBa2Cu3Oy superconductors were made. A potentiometric end-point determination with Pt wire electrode was introduced, and a higher concentration of KI was used in order to avoid precipitation of CuI. The two ways for calculating the oxygen coefficient y and the possibility for detecting changes of the sample, with consequent differences in stoichiometry, were discussed.

引用

页码：227 / 229

页数：3

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