Oxidative quaternary acidic mixture on microwave-assisted digestion for high-carbon iron samples

Kenichi Nakayama, Kazuaki Wagatsuma

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


This paper suggested an improved method for the sample preparation of pig iron and cast iron in inductively coupled plasma atomic emission spectrometry. Conventional digestion methods using a mixture of hydrochloric acid and nitric acid, associated with fuming with phosphoric and sulfuric acids or fuming with perchloric acid, have a poor-ability to decompose the iron sample completely. Alternatively, a microwave digestion method using an acidic mixture of hydrofluoric acid, nitric acid, phosphoric acid, and potassium chlorate, enabled various iron samples to be fully decomposed. The suggested procedure was applicable to quantify titanium, vanadium, chromium, manganese, nickel, copper, and molybdenum in high-carbon iron samples using a similar dissolution method.

Original languageEnglish
Pages (from-to)2181-2184
Number of pages4
JournalIsij International
Issue number7
Publication statusPublished - 2021


  • Cast iron
  • Inductively coupled plasma atomic emission spectrometry
  • Pig iron
  • Sample preparation

ASJC Scopus subject areas

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


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