Uncertainty of the Analytical Values in Laser-induced Plasma Optical Emission Spectrometry for Element-based Sorting of Commercial Aluminum Alloys

Yusuke Fugane, Shunsuke Kashiwakura, Kazuaki Wagatsuma

Research output: Contribution to journalArticlepeer-review

Abstract

This paper describes uncertainty ranges of the analytical values by laser-induced breakdown spectrometry (LIBS), in order to realize an element-based sorting of commercial A1 alloys whose chemical compositions are varied depending on the kind. For this purpose, calibration factors and their standard errors between the emission intensity and the content of major alloyed elements were estimated using a series of standard reference materials of A1 alloys. From the result of LIBS analysis, A1 alloy samples, labeled as A1050, A1100, A2017, A2024, A5052, A5083, and A6061, were actually classified into the kinds of A1 alloy for which the chemical compositions have been standardized by the Japanese Industrial Standards. The sorting was successfully conducted, although several of them could not be classified into a particular alloy type. This was not due to the analytical precision of LIBS but due to a similarity of the chemical composition between several types of the A1 alloy. For comparison, a similar sorting procedure was carried out using the analytical result by ICP-OES, which gave the same conclusion as the LIBS. In fact, ICP-OES requires sample pretreatment and dissolution and thus cannot be applied to on-site/in-line analysis, whereas LIBS can provide a rapid response of analytical values. Accordingly, the LIBS analysis may be actually applied for sorting A1 alloy materials in detail.

Original languageEnglish
Pages (from-to)1415-1421
Number of pages7
Journalanalytical sciences
Volume36
Issue number11
DOIs
Publication statusPublished - 2020

Keywords

  • A1 alloys
  • Laser-induced breakdown spectrometry
  • element-based sorting
  • elemental analysis
  • recycling

ASJC Scopus subject areas

  • Analytical Chemistry

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