Study of laser-matter interaction conditions and their impact
on classification of LIBS spectra

a 2015

Study of laser-matter interaction conditions and their impact on classification of LIBS spectra

VÍTKOVÁ, Gabriela; Pavel POŘÍZKA; Karel NOVOTNÝ; David PROCHAZKA; Jakub KLUS et. al.

Basic information

Original name

Study of laser-matter interaction conditions and their impact on classification of LIBS spectra

Authors

VÍTKOVÁ, Gabriela (203 Czech Republic, belonging to the institution); Pavel POŘÍZKA (203 Czech Republic); Karel NOVOTNÝ (203 Czech Republic, guarantor, belonging to the institution); David PROCHAZKA (203 Czech Republic); Jakub KLUS (203 Czech Republic) and Jozef KAISER (203 Czech Republic)

Edition

8th Euro-Mediterranean Symposium on Laser Induced Breakdown Spectroscopy, 2015

Other information

Language

English

Type of outcome

Conference abstract

Field of Study

10406 Analytical chemistry

Country of publisher

Austria

Confidentiality degree

is not subject to a state or trade secret

RIV identification code

RIV/00216224:14740/15:00086563

Organization unit

Central European Institute of Technology

Keywords in English

LIBS; laser-matter interaction; principal component analysis

Changed: 12/2/2016 12:49, doc. Mgr. Karel Novotný, Ph.D.

Abstract

In the original language

When performing LIBS measurement there is crucial role of so-called matrix effect. Matrix effect is a phenomenon where the chemical and physical properties of the material under study (its composition, type of molecules and the structure of their arrangement, types of bonds, etc.) have a significant effect on the ablation processes and consequent laser-induced plasma formation and evolution. This effect is most often perceived negatively, because it represents a major limitation of quantification. In this contribution varying of measurement conditions is studied in relation to its impact on the classification of materials. Utilization of advanced statistical methods enables classification and identification of materials on the basis of their spectra without the knowledge of absolute amounts of particular elements. However, for good results it is necessary to optimize the measurement conditions properly. This study was done using standardized materials of ores with different matrices. They were measured using LIBS system under various conditions (pulse energy, delay time) and the ideal conditions were chosen from signal to noise ratio (SNR). These spectra were then processed along with the spectra measured using ‘non-ideal’ conditions, thus more significantly suffering from matrix effect. Comparison was illustrated on the results of classification of samples according to their matrices.

Links

ED1.1.00/02.0068, research and development project

Name: CEITEC - central european institute of technology

Cite

VÍTKOVÁ, Gabriela; Pavel POŘÍZKA; Karel NOVOTNÝ; David PROCHAZKA; Jakub KLUS and Jozef KAISER. Study of laser-matter interaction conditions and their impact on classification of LIBS spectra. In 8th Euro-Mediterranean Symposium on Laser Induced Breakdown Spectroscopy. 2015.

@proceedings{1335220,
   author = {Vítková, Gabriela and Pořízka, Pavel and Novotný, Karel and Prochazka, David and Klus, Jakub and Kaiser, Jozef},
   booktitle = {8th Euro-Mediterranean Symposium on Laser Induced Breakdown Spectroscopy},
   keywords = {LIBS; laser-matter interaction; principal component analysis},
   language = {eng},
   title = {Study of laser-matter interaction conditions and their impact on classification of LIBS spectra},
   year = {2015}
}

TY  - CONF
ID  - 1335220
AU  - Vítková, Gabriela - Pořízka, Pavel - Novotný, Karel - Prochazka, David - Klus, Jakub - Kaiser, Jozef
PY  - 2015
TI  - Study of laser-matter interaction conditions and their impact on classification of LIBS spectra
KW  - LIBS
KW  - laser-matter interaction
KW  - principal component analysis
N2  - When performing LIBS measurement there is crucial role of so-called matrix effect. Matrix effect is a phenomenon where the chemical and physical properties of the material under study (its composition, type of molecules and the structure of their arrangement, types of bonds, etc.) have a significant effect on the ablation processes and consequent laser-induced plasma formation and evolution. This effect is most often perceived negatively, because it represents a major limitation of quantification. In this contribution varying of measurement conditions is studied in relation to its impact on the classification of materials. Utilization of advanced statistical methods enables classification and identification of materials on the basis of their spectra without the knowledge of absolute amounts of particular elements. However, for good results it is necessary to optimize the measurement conditions properly. This study was done using standardized materials of ores with different matrices. They were measured using LIBS system under various conditions (pulse energy, delay time) and the ideal conditions were chosen from signal to noise ratio (SNR). These spectra were then processed along with the spectra measured using ‘non-ideal’ conditions, thus more significantly suffering from matrix effect. Comparison was illustrated on the results of classification of samples according to their matrices.
ER  -

VÍTKOVÁ, Gabriela; Pavel POŘÍZKA; Karel NOVOTNÝ; David PROCHAZKA; Jakub KLUS and Jozef KAISER. Study of laser-matter interaction conditions and their impact on classification of LIBS spectra. In \textit{8th Euro-Mediterranean Symposium on Laser Induced Breakdown Spectroscopy}. 2015.

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