Sodium carbonate fusion/alkaline solution method for the determination of Si in SiC by inductively coupled plasma-optical emission spectrometry

Yuetsu Danzaki, Kazuaki Wagatsuma

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Dissolution methods with acid solutions have generally been employed for the determination of Si in various samples by inductively coupled plasma-optical emission spectrometry (ICP-OES). However, few reports on analytical procedures with alkaline solutions have been published. Si determination in a SiC sample could be successfully performed by using a dissolution technique with an alkaline solution. The SiC sample (40 mg) in a Pt crucible was fused with 2 g of Na2CO3. After the melt was dissolved with water in a Teflon beaker, the solution was finished with a polypropylene flask. The alkaline solution contained Ga added as an internal standard. The solution was diluted to 100 ml and then measured by ICP-OES. For obtaining a calibration curve, SiO2 powder was dissolved using the same procedure as that for the SiC sample. For a comparison, an acid solution was prepared by adding HCl-HNO3 to the solution after water-dissolving a SiC sample melted with Na2CO3. The acid sample solution contained Zn as an internal standard. A good agreement in the analytical result of Si was obtained between the alkaline sample solution and the acid sample solution.

Original languageEnglish
Pages (from-to)347-350
Number of pages4
JournalBUNSEKI KAGAKU
Volume52
Issue number5
DOIs
Publication statusPublished - 2003 May

Keywords

  • Alkaline solution
  • Fusion with NaCO
  • ICP-OES
  • Si in SiC

ASJC Scopus subject areas

  • Analytical Chemistry

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