Rapid borate fusion pre-treatment for ICP-AES determination of tungsten in high-speed steel

Kenichi Nakayama, Kazuaki Wagatsuma

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

This paper suggests a rapid decomposition and dissolution method for stable solution preparation in inductively coupled plasma atomic emission spectrometry when tungsten in a highspeed steel is quantified. The steel sample was decomposed with a mixture of hydrofluoric and nitric acid, and then the resulting solution was fused with lithium tetraborate. The vitrified borate was able to dissolve in nitric acid containing tartaric acid to prepare the final sample solutions. This pre-treatment method has a superior feature: borate could effectively prevent tungsten hydrolysis in the prepared solution. The standard for quantification could be prepared in a similar procedure using metal standard solutions. The present method enabled more rapid and accurate determination of tungsten in certified reference materials of high-speed steel compared to the conventional dissolution procedure.

Original languageEnglish
Pages (from-to)1114-1116
Number of pages3
JournalIsij International
Volume56
Issue number6
DOIs
Publication statusPublished - 2016 Jan 1

Keywords

  • Acid decomposition
  • Alkali fusion
  • High-speed steel
  • Inductively coupled plasma atomic emission spectrometry
  • Tungsten determination

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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