Improving the laser-induced breakdown spectroscopy measurement accuracy

Zhe Wang, Jie Feng, Zheng Li, Weidou Ni

Research output: Contribution to journalArticle

Abstract

Six brass alloys were tested using laser-induced breakdown spectroscopy (LIBS) to measure the optimal spectral wavelength of Cu and to determine the optimum system configurations for alloy measurements. The accuracy of the calibration curve was improved by a linear correlation for interference by the other elements and an exponential relationship for self-absorption. Multivariate regression method was used to compensate for the matrix effects. Results show a very satisfying improvement using the multivariate analysis method with the coefficient of determination of the optimized calibration curve improved from 0.953 8 to 0.999 8.

Original languageEnglish (US)
Pages (from-to)1263-1266
Number of pages4
JournalQinghua Daxue Xuebao/Journal of Tsinghua University
Volume50
Issue number8
StatePublished - Aug 1 2010
Externally publishedYes

Keywords

  • Laser-induced breakdown spectroscopy (LIBS)
  • Multivariate analysis
  • Quantitative analysis
  • Self-absorption

ASJC Scopus subject areas

  • Engineering(all)
  • Computer Science Applications
  • Applied Mathematics

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