Determination of trace zirconium and hafnium in high-purity scandium oxide by inductively coupled plasma atomic emission spectrometry and extraction chromatography

✍ Scribed by Xiao-Jin Yang; Jing-Su Guan; Tai-Jun Shen

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 507 KB
• Volume: 277
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(93)85101-o

✦ Synopsis

Inductively coupled plasma atomic emission spectrometry in combination with extraction chromatography was applied to the determination of trace amounts of zirconium and hafnium in high-purity scandium ozide. The chromatographic column separation procedure was carried out with 1-phenyl-3-methyl-4-benzoylpyrazol-5-one as the stationary phase and hydrochloride acid as the mobile phase. Optimum cobunn operating conditions were established. The enrichment factor based on 0.1 g of scandium oxide was over 2000. The results obtained agreed well with those obtained by spark-source mass spectrometry without the separation of scandium. For a sample mass of 0.3 g, the detection limits for zirconium and hafnium were 0.14 and 0.17 kg g-l, respectively. The proposed method could be applied to the analysis of scandium ozide of laser grade and 99.9995% purity.