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POŘÍZKA, P. KLUS, J. MAŠEK, J. RAJNOHA, M. PROCHAZKA, D. MODLITBOVÁ, P. NOVOTNÝ, J. BURGET, R. NOVOTNÝ, K. KAISER, J.
Original Title
Multivariate classification of echellograms: a new perspective in Laser-Induced Breakdown Spectroscopy analysis
Type
journal article in Web of Science
Language
English
Original Abstract
In this work, we proposed a new data acquisition approach that significantly improves the repetition rates of Laser-Induced Breakdown Spectroscopy (LIBS) experiments, where high-end echelle spectrometers and intensified detectors are commonly used. The moderate repetition rates of recent LIBS systems are caused by the utilization of intensified detectors and their slow full frame (i.e. echellogram) readout speeds with consequent necessity for echellogram-to-1D spectrum conversion (intensity vs. wavelength). Therefore, we investigated a new methodology where only the most effective pixels of the echellogram were selected and directly used in the LIBS experiments. Such data processing resulted in significant variable down-selection (more than four orders of magnitude). Samples of 50 sedimentary ores samples (distributed in 13 ore types) were analyzed by LIBS system and then classified by linear and non-linear Multivariate Data Analysis algorithms. The utilization of selected pixels from an echellogram yielded increased classification accuracy compared to the utilization of common 1D spectra.
Keywords
Analytical chemistry; Geology; Statistics
Authors
POŘÍZKA, P.; KLUS, J.; MAŠEK, J.; RAJNOHA, M.; PROCHAZKA, D.; MODLITBOVÁ, P.; NOVOTNÝ, J.; BURGET, R.; NOVOTNÝ, K.; KAISER, J.
Released
1. 12. 2017
Publisher
Springer Nature
ISBN
2045-2322
Periodical
Scientific Reports
Year of study
7
Number
3160
State
United Kingdom of Great Britain and Northern Ireland
Pages from
1
Pages to
12
Pages count
URL
https://www.nature.com/articles/s41598-017-03426-0
Full text in the Digital Library
http://hdl.handle.net/11012/69360
BibTex
@article{BUT136910, author="Pavel {Pořízka} and Jakub {Klus} and Jan {Mašek} and Martin {Rajnoha} and David {Prochazka} and Pavlína {Modlitbová} and Jan {Novotný} and Radim {Burget} and Karel {Novotný} and Jozef {Kaiser}", title="Multivariate classification of echellograms: a new perspective in Laser-Induced Breakdown Spectroscopy analysis", journal="Scientific Reports", year="2017", volume="7", number="3160", pages="1--12", doi="10.1038/s41598-017-03426-0", issn="2045-2322", url="https://www.nature.com/articles/s41598-017-03426-0" }