Co-author: Rajnoha, M.

Search results

1 articles found

Multivariate classification of echellograms: a new perspective in Laser-Induced Breakdown Spectroscopy analysis

Author: Pořízka, P. ; et. al.

Journal: Scientific Reports (2017)

DOI: 10.1038/s41598-017-03426-0

Authors
Burget, R. ; Kaiser, J. ; Klus, J. ; Mašek, J. ; Modlitbová, P. ; Novotný, J. ; Novotný, K. ; Prochazka, D. ; Rajnoha, M.

Keywords

Laser-Induced Breakdown Spectroscopy; ;

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.

Area:

Geology

Material:

Sedimentary ore

Elements:

Lines [nm]:

Fe I 344.10 nm Fe I 373.71 nm Fe I 374.56 nm Fe I 404.58 nm Fe I 487.21 nm Fe I 489.15 nm Fe I 492.05 nm Fe I 495.76 nm Fe I 643.88 nm Fe II 318.01 nm

Lines [nm]:

Mg I 285.21 nm Mg I 383.23 nm Mg I 383.83 nm Mg I 517.27 nm Mg I 518.36 nm Mg II 279.55 nm Mg II 279.80 nm Mg II 280.27 nm Mg II 293.65 nm

Lines [nm]:

Ca I 422.67 nm Ca I 558.88 nm Ca I 559.45 nm Ca II 393.37 nm Ca II 396.85 nm Ca II 854.21 nm Ca II 866.21 nm

Lines [nm]:

Mn I 353.19 nm Mn I 475.40 nm Mn I 476.24 nm Mn I 478.34 nm Mn I 482.35 nm

Lines [nm]:

Al I 308.22 nm Al I 309.27 nm Al I 394.40 nm Al I 396.15 nm

...

Emmision lines:
Mg II 279.55 nm
Mg II 279.80 nm
Mg II 280.27 nm
Mg I 285.21 nm
Si I 288.16 nm
Mg II 293.65 nm
Al I 308.22 nm
Al I 309.27 nm
Fe II 318.01 nm
Cu I 327.40 nm
Ag I 328.07 nm
Zn I 334.50 nm
Fe I 344.10 nm
Mn I 353.19 nm
Cr I 354.78 nm
Fe I 373.71 nm
Fe I 374.56 nm
Mg I 383.23 nm
Mg I 383.83 nm
Si I 390.55 nm
Ca II 393.37 nm
Al I 394.40 nm
Al I 396.15 nm
Ca II 396.85 nm
Fe I 404.58 nm
Pb I 405.78 nm
Ca I 422.67 nm
Cr I 455.40 nm
Mn I 475.40 nm
Mn I 476.24 nm
Mn I 478.34 nm
Mn I 482.35 nm
Fe I 487.21 nm
Fe I 489.15 nm
Fe I 492.05 nm
Fe I 495.76 nm
Mg I 517.27 nm
Mg I 518.36 nm
Ca I 558.88 nm
Ca I 559.45 nm
Na I 589.00 nm
Na I 589.59 nm
Fe I 643.88 nm
H I 656.28 nm
Li I 670.78 nm
Li I 670.79 nm
K I 766.49 nm
K I 769.90 nm
O I 777.19 nm
Ca II 854.21 nm
Ca II 866.21 nm
N I 868.34 nm

Contacts

Contact Us

Take the first step to easier and speedier chemical analysis. Reach out to us and we will be in touch soon!

AtomTrace a.s.

Vědecko-technický park profesora Lista
Kolejní 9, Brno 612 00
Czech Republic

Identification number: 03396916

E-mail: info@atomtrace.com

Jobs

Looking for a career opportunity?
See our list of available positions.

Support

Or contact our support team: support@atomtrace.com

Author: Rajnoha, M.

Search results

Co-author: Rajnoha, M.

Search results

Contacts

Contact Us

AtomTrace a.s.

Jobs

Support