Přístupnostní navigace
E-přihláška
Vyhledávání Vyhledat Zavřít
Detail publikace
KÉPEŠ, E. POŘÍZKA, P. KLUS, J. MODLITBOVÁ, P. KAISER, J.
Originální název
Influence of baseline subtraction on laser-induced breakdown spectroscopic data
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
Spectra acquired by laser-induced breakdown spectroscopy comprise both a valuable analyte signal and an undesired background signal originating from various sources. The latter is commonly suppressed, at least partially, by gating of the signal acquisition, or treated numerically during the data processing. The numerical treatment might lead to loss of information or introduction of spectral artefacts, depending on the applied methodology. Consequently, background subtraction might significantly influence both univariate and multivariate analysis of the LIBS data. While various baseline correction methods have recently been studied and compared for multivariate LIBS analysis, their influence on LIBS data remains unexplored. Therefore, the present work aims to elucidate the effects of numerical background estimation and subtraction on LIBS data in terms of limits of detection estimated by the signal-to-noise ratio method, considering several fundamentally different background estimation algorithms: polynomial fitting, heuristic estimation, wavelet smoothing, and non-parametric modelling. A threshold gate delay value was observed above which the numerical treatment of spectral background has to be done cautiously. In addition, it was found that the optimal measurement parameters and selection of the emission line yielding the best results dependon the planned spectral processing.
Klíčová slova
Background estimation, background subtraction, laser-induced breakdown spectroscopy, limit of detection
Autoři
KÉPEŠ, E.; POŘÍZKA, P.; KLUS, J.; MODLITBOVÁ, P.; KAISER, J.
Vydáno
12. 10. 2018
Nakladatel
Royal Society of Chemistry
ISSN
1364-5544
Periodikum
Journal of Analytical Atomic Spectrometry
Ročník
33
Číslo
-
Stát
Spojené království Velké Británie a Severního Irska
Strany od
2107
Strany do
2115
Strany počet
9
URL
https://pubs.rsc.org/en/content/articlelanding/2018/ja/c8ja00209f#!divAbstract
BibTex
@article{BUT150455, author="Erik {Képeš} and Pavel {Pořízka} and Jakub {Klus} and Pavlína {Modlitbová} and Jozef {Kaiser}", title="Influence of baseline subtraction on laser-induced breakdown spectroscopic data", journal="Journal of Analytical Atomic Spectrometry", year="2018", volume="33", number="-", pages="2107--2115", doi="10.1039/C8JA00209F", issn="1364-5544", url="https://pubs.rsc.org/en/content/articlelanding/2018/ja/c8ja00209f#!divAbstract" }