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SLÁDKOVÁ, L. PROCHAZKA, D. POŘÍZKA, P. ŠKARKOVÁ, P. REMEŠOVÁ, M. HRDLIČKA, A. NOVOTNÝ, K. ČELKO, L. KAISER, J.
Original Title
Improvement of the Laser-Induced Breakdown Spectroscopy method sensitivity by the usage of combination of Ag-nanoparticles and vacuum conditions
Type
journal article in Web of Science
Language
English
Original Abstract
In this work we studied the effect of vacuum (low pressure) conditions on the behavior of laser-induced plasma (LIP) created on a sample surface covered with silver nanoparticles (Ag-NPs), i.e. Nanoparticles-Enhanced Laser-Induced Breakdown Spectroscopy (NELIBS) experiment in a vacuum. The focus was put on the step by step optimization of the measurement parameters, such as energy of the laser pulse, temporally resolved detection, ambient pressure, and different content of Ag-NPs applied on the sample surface. The measurement parameters were optimized in order to achieve the greatest enhancement represented as the signal-to-noise ratio (SNR) of NELIBS signal to the SNR of LIBS signal. The presence of NPs involved in the ablation process enhances LIP intensity; hence the improvement in the analytical sensitivity was yielded. A leaded brass standard was analyzed with the emphasis on the signal enhancement of Pb traces. We gained enhancement by a factor of four. Although the low pressure had no significant influence on the LIP signal enhancement compared to that under ambient conditions, the SNR values were noticeably improved with the implementation of the NPs.
Keywords
Laser-Induced Breakdown Spectroscopy; Silver nanoparticles; Low pressure conditions; Sensitivity improvement
Authors
SLÁDKOVÁ, L.; PROCHAZKA, D.; POŘÍZKA, P.; ŠKARKOVÁ, P.; REMEŠOVÁ, M.; HRDLIČKA, A.; NOVOTNÝ, K.; ČELKO, L.; KAISER, J.
Released
1. 1. 2017
Publisher
Elsevier
ISBN
0584-8547
Periodical
Spectrochimica Acta Part B
Number
127
State
United Kingdom of Great Britain and Northern Ireland
Pages from
48
Pages to
55
Pages count
8
URL
http://www.sciencedirect.com/science/article/pii/S0584854716303482
BibTex
@article{BUT129834, author="Lucia {Sládková} and David {Prochazka} and Pavel {Pořízka} and Pavlína {Modlitbová} and Michaela {Remešová} and Aleš {Hrdlička} and Karel {Novotný} and Ladislav {Čelko} and Jozef {Kaiser}", title="Improvement of the Laser-Induced Breakdown Spectroscopy method sensitivity by the usage of combination of Ag-nanoparticles and vacuum conditions", journal="Spectrochimica Acta Part B", year="2017", number="127", pages="48--55", doi="10.1016/j.sab.2016.11.005", issn="0584-8547", url="http://www.sciencedirect.com/science/article/pii/S0584854716303482" }