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Related Experiment Video

Updated: Aug 15, 2025

Quantitative Analysis of Vacuum Induction Melting by Laser-induced Breakdown Spectroscopy
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Model transfer method based on piecewise direct standardization in laser-induced-breakdown spectroscopy.

Ge Xie, Lanxiang Sun, Dong Shang

    Applied Optics
    |January 6, 2023
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a new method to make laser-induced breakdown spectroscopy (LIBS) models work across different instruments. The piecewise direct standardization (PLS_PDS) technique significantly reduces the number of samples needed for new LIBS instruments.

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    Area of Science:

    • Analytical Chemistry
    • Spectroscopy

    Background:

    • Quantitative analysis using laser-induced breakdown spectroscopy (LIBS) typically requires numerous certified samples to build accurate models.
    • Differences in instrument hardware (excitation and collection efficiencies) prevent direct application of models across different LIBS devices, necessitating extensive recalibration.
    • This instrument-to-instrument variability is labor-intensive and limits the rapid deployment of LIBS technology.

    Purpose of the Study:

    • To develop a method for transferring quantitative models between different laser-induced breakdown spectroscopy (LIBS) instruments.
    • To reduce the number of samples and cost associated with building new calibration models for LIBS instruments.
    • To enable a single calibration model to adapt to various instruments by minimizing spectral data differences.

    Main Methods:

    • A piecewise direct standardization (PLS_PDS) method was employed to create a spectral transfer function between a 'master' and a 'slave' LIBS instrument.
    • Two portable LIBS instruments with identical configurations were used to collect spectral data.
    • The PLS_PDS method aimed to reduce spectral discrepancies, allowing model adaptation across instruments.

    Main Results:

    • The number of samples required for quantitative analysis on the 'slave' instrument was reduced from 51 to 14 after applying the PLS_PDS model transfer.
    • The quantitative performance of the 'slave' instrument after model transfer closely matched that of the 'master' instrument.
    • Elemental analysis of aluminum alloy samples demonstrated the effectiveness of the model transfer method.

    Conclusions:

    • The PLS_PDS model transfer method significantly reduces the sample requirement for building quantitative models on new LIBS instruments.
    • This approach minimizes spectral data differences between instruments, facilitating model portability.
    • The developed method is beneficial for advancing the widespread application of LIBS by lowering calibration costs and effort.