Calibration-free Laser-induced Breakdown Spectroscopy (CF-LIBS) for Multi-Element Analysis: Preliminary Results

Böhmer E, Klämpfl F, Schmidt M, Hohmann M (2026)

Publication Type: Conference contribution

Publication year: 2026

Journal

Publisher: Elsevier B.V.

Book Volume: 143

Pages Range: 53-57

Conference Proceedings Title: Procedia CIRP

Event location: Heinrich-Lades-Halle, DEU

DOI: 10.1016/j.procir.2026.07.013

Abstract

Unlike conventional Laser-induced Breakdown Spectroscopy (LIBS), calibration-free LIBS (CF-LIBS) enables quantitative elemental analysis without the need for empirical calibration curves or reference standards. When the conditions of stoichiometric ablation, optically thin plasma, and local thermodynamic equilibrium are met, elemental concentrations can be calculated directly from the emission spectrum. However, accurate quantification is often difficult due to peak overlaps, which can be caused by limitations in spectral resolution, for example. This requires careful peak selection to prevent systematic errors in automated routines. This study addresses these challenges by developing an automated algorithm that identifies the spectral lines of a 10-cent euro coin by cross-referencing them with the NIST database. The algorithm evaluates peak morphology to determine the suitability of each transition for concentration analysis. The results show that the algorithm correctly identifies over 80% of the target peaks, yielding a calculated plasma temperature of 9 868 K. The determined elemental concentrations, 90% Cu, 6% Al, 3% Zn, and 1% Sn, demonstrate high precision, agreeing closely with existing literature data for these coins. This automated methodology provides an alternative approach to calculating concentrations using CF-LIBS.

Authors with CRIS profile

How to cite

APA:

Böhmer, E., Klämpfl, F., Schmidt, M., & Hohmann, M. (2026). Calibration-free Laser-induced Breakdown Spectroscopy (CF-LIBS) for Multi-Element Analysis: Preliminary Results. In Procedia CIRP (pp. 53-57). Heinrich-Lades-Halle, DEU: Elsevier B.V..

MLA:

Böhmer, Edith, et al. "Calibration-free Laser-induced Breakdown Spectroscopy (CF-LIBS) for Multi-Element Analysis: Preliminary Results." Proceedings of the 14th CIRP Conference on Photonic Technologies, LANE 2026, Heinrich-Lades-Halle, DEU Elsevier B.V., 2026. 53-57.

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