Dissolution procedure for the determination of major and minor elements in La-Sr-Ga-Nb oxide by inductively coupled plasma-optical emission spectrometry

Kan Ichi Makabe, Kunio Takada, Kazuaki Wagatsuma

Research output: Contribution to journalArticlepeer-review

Abstract

This paper describes a dissolution method for La-Sr-Ga-Nb (LSGN) oxide samples, which are hardly decomposed by conventional acid treatments. The LSGN oxides are not dissolved in any acid solution and do not undergo fusion with alkaline reagents, such as Na2CO3. However, the sample can undergo fusion with Na2B4O7 powder. A sample (50 mg) was fused with 1 g of Na2B4O7 in a Pt crucible, whose inside wall was covered with pre-melted Na2B 4O7 (1 g). The melted product was cooled and then dissolved with a mixture of 30 ml HNO3 (1:1), 2.5 ml H 2O2, and 1 g tartaric acid. After the addition of 1.5 ml of H2O2 and 5 ml of an Y solution (5 mg/ml) as an internal standard, the solution was diluted to 100 ml and measured by inductively coupled plasma-optical emission spectrometry. Two samples having different chemical compositions were analyzed to yield each in good agreement with the analytical values between two individual measurements.

Original languageEnglish
Pages (from-to)49-52
Number of pages4
JournalBUNSEKI KAGAKU
Volume53
Issue number1
DOIs
Publication statusPublished - 2004 Jan

Keywords

  • Fusion with NABO
  • ICP-OES
  • La-Sr-Ga-Nb oxid

ASJC Scopus subject areas

  • Analytical Chemistry

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