High-throughput calibration-free laser-induced breakdown spectroscopy
High-throughput calibration-free laser-induced breakdown spectroscopy
Laser-induced breakdown spectroscopy (LIBS) offers a noninvasive, label-free technique for chemical analysis in challenging environments, including for deep-sea mineral resource evaluation and extra-terrestrial geology. We aim to improve the usefulness of LIBS spectral analysis in these applications. We propose an efficient, systematic procedure that uses calibration-free LIBS (CF-LIBS) to quantitatively estimate chemical compositions. This method combines baseline estimation and denoising using sparsity with the spectrum-adapted expectation–conditional maximization algorithm, enabling nonlinear background subtraction and high-throughput peak fitting. In addition, we introduce a Boltzmann plot regression based on Student’s t-distribution that is robust against outliers. These techniques allow the chemical composition of metal and rock samples to be estimated using the CF-LIBS method, demonstrating its potential for use in comprehensive geological surveys in deep-sea and extra-terrestrial environments.
1259-1271
Matsumura, Tarojiro
35469720-9aba-4fd7-ab33-8279a664c18f
Takahashi, Tomoko
3f3f98c5-993c-4e11-b5ec-0fa4dbdbced9
Nagata, Kenji
e939f707-28f9-42ad-a6eb-30e5dac69a02
Ando, Yasunobu
ac7f9d45-167a-4f6e-a8ad-e56e29ae8efb
Yada, Akira
c8e6eec6-dd3a-4f34-8e6d-4a0fd742022c
Thornton, Blair
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Kuwatani, Tatsu
1dbd5293-13f6-4ccb-bcc7-91e87e3b58bb
20 June 2024
Matsumura, Tarojiro
35469720-9aba-4fd7-ab33-8279a664c18f
Takahashi, Tomoko
3f3f98c5-993c-4e11-b5ec-0fa4dbdbced9
Nagata, Kenji
e939f707-28f9-42ad-a6eb-30e5dac69a02
Ando, Yasunobu
ac7f9d45-167a-4f6e-a8ad-e56e29ae8efb
Yada, Akira
c8e6eec6-dd3a-4f34-8e6d-4a0fd742022c
Thornton, Blair
8293beb5-c083-47e3-b5f0-d9c3cee14be9
Kuwatani, Tatsu
1dbd5293-13f6-4ccb-bcc7-91e87e3b58bb
Matsumura, Tarojiro, Takahashi, Tomoko, Nagata, Kenji, Ando, Yasunobu, Yada, Akira, Thornton, Blair and Kuwatani, Tatsu
(2024)
High-throughput calibration-free laser-induced breakdown spectroscopy.
ACS Earth and Space Chemistry, 8 (6), .
(doi:10.1021/acsearthspacechem.4c00067).
Abstract
Laser-induced breakdown spectroscopy (LIBS) offers a noninvasive, label-free technique for chemical analysis in challenging environments, including for deep-sea mineral resource evaluation and extra-terrestrial geology. We aim to improve the usefulness of LIBS spectral analysis in these applications. We propose an efficient, systematic procedure that uses calibration-free LIBS (CF-LIBS) to quantitatively estimate chemical compositions. This method combines baseline estimation and denoising using sparsity with the spectrum-adapted expectation–conditional maximization algorithm, enabling nonlinear background subtraction and high-throughput peak fitting. In addition, we introduce a Boltzmann plot regression based on Student’s t-distribution that is robust against outliers. These techniques allow the chemical composition of metal and rock samples to be estimated using the CF-LIBS method, demonstrating its potential for use in comprehensive geological surveys in deep-sea and extra-terrestrial environments.
Text
matsumura-et-al-2024-high-throughput-calibration-free-laser-induced-breakdown-spectroscopy
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Accepted/In Press date: 14 May 2024
e-pub ahead of print date: 3 June 2024
Published date: 20 June 2024
Identifiers
Local EPrints ID: 508777
URI: http://eprints.soton.ac.uk/id/eprint/508777
ISSN: 2472-3452
PURE UUID: 6d2c82a8-aabb-4f33-b9e4-c8b80f88a861
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Date deposited: 03 Feb 2026 17:40
Last modified: 03 Feb 2026 17:40
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Contributors
Author:
Tarojiro Matsumura
Author:
Tomoko Takahashi
Author:
Kenji Nagata
Author:
Yasunobu Ando
Author:
Akira Yada
Author:
Tatsu Kuwatani
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