Analysis of superconductor oxides YBa2Cu3O8−x by inductively coupled plasma atomic emission spectrometry and complexometric titration

✍ Scribed by Lilli Paama; Paavo Peramäki; Lauri H.J. Lajunen

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 367 KB
• Volume: 330
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(96)00182-1

✦ Synopsis

The elemental composition of superconductor oxides YBa2Cu308_x were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES) and complexometric titration. Samples were dissolved in dilute HCl. A sequential PU 7000 Philips inductively coupled plasma atomic emission spectrometer was used for the measurements. A comparison of the different atom and ion emission lines of yttrium, barium and copper was carried out. The effect of changes of forward radio frequency (RF) power coupled into the plasma on emission intensity of various spectral lines was studied. The RF power was changed from 0.8 to 1.2 kW. The changes in the net intensities (%) of the emission lines of Cu(1) at 324.754 nm, Cu(I1) at 224.7OOnm. Ba(I1) at 455.403, Ba(II) at 493.409nm, Y(I1) at 371.030nm and Y(II) at 360.073nm were calculated. The indicator 1-(2-Pyridylazo)-2-Naphthol (PAN) and different buffers were used for the complexometric titration of Cu, Y and Ba. No statistically significant differences were found between the results of ICP-AES and chemical methods of analysis.