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

Authors
MALKOVA Z NOVAK J HAMPLOVA V POKORNA Z
Citation
Z. Malkova et al., DETERMINATION OF THE OXYGEN BALANCE IN OXIDE SUPERCONDUCTORS BY A PHOTOMETRIC-METHOD, Fresenius' journal of analytical chemistry, 347(12), 1993, pp. 478-479
Citations number
8
Categorie Soggetti
Chemistry Analytical
Journal title
Fresenius' journal of analytical chemistry → ACNP
ISSN journal
09370633
Volume
347
Issue
12
Year of publication
1993
Pages
478 - 479
Database
ISI
SICI code
0937-0633(1993)347:12<478:DOTOBI>2.0.ZU;2-W
Abstract
A photometric method is described for determining the oxygen balance i n oxide superconductors. It is based on the oxidation of Fe2+ to Fe3by the superconductors and the following determination of the residual Fe2+ ions as complex with 1,10-phenanthroline. Hydrobromic acid is us ed for dissolving the samples. The method has been developed for 1 0 m g sample weights. Good reliability of the method was verified by compa rison with the cerimetric determination using 80 mg samples.