Optimization of liquid jet system for laser-induced breakdown spectroscopy analysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F16%3APU119028" target="_blank" >RIV/00216305:26620/16:PU119028 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.4947233" target="_blank" >http://dx.doi.org/10.1063/1.4947233</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4947233" target="_blank" >10.1063/1.4947233</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Optimization of liquid jet system for laser-induced breakdown spectroscopy analysis

Popis výsledku v původním jazyce

A complex optimization of geometrical and temporal parameters of a jet system (developed in Laser-induced breakdown spectroscopy (LIBS) laboratory of Brno University of Technology) for direct elemental analysis of samples in a liquid state of matter using LIBS was carried out. First, the peristaltic pump was synchronized with the flashlamp of the ablation laser, which reduced variation of the ablated sample amount. Also, the fluctuation of the laser ray angle incident on the jet surface was diminished. Such synchronization reduced signal standard deviations and thus increased repeatability of the measurements. Then, laser energy and distance of the focusing lens from the sample were optimized. The gate delay time and the gate width were optimized for single pulse (SP) experiments; the gate delay time and the inter-pulse delay were optimized for the use of double pulse (DP) variant. Results were assessed according to the highest signal to noise ratios and the lowest relative standard deviations of the signal. The sensitivity of the single pulse and the double pulse LIBS for the detection of heavy metals traces, copper (Cu  at 324.754 nm) and lead (Pb  at 405.781 nm), in aqueous solution of copper () sulfate and lead () acetate, was estimated in terms of limits of detection (LODs). As a result, sensitivity improvement of DP LIBS system was observed, the LOD of Cu obtained with DP was calculated 40% lower than LOD gained from SP technique.

Název v anglickém jazyce

Optimization of liquid jet system for laser-induced breakdown spectroscopy analysis

Popis výsledku anglicky

A complex optimization of geometrical and temporal parameters of a jet system (developed in Laser-induced breakdown spectroscopy (LIBS) laboratory of Brno University of Technology) for direct elemental analysis of samples in a liquid state of matter using LIBS was carried out. First, the peristaltic pump was synchronized with the flashlamp of the ablation laser, which reduced variation of the ablated sample amount. Also, the fluctuation of the laser ray angle incident on the jet surface was diminished. Such synchronization reduced signal standard deviations and thus increased repeatability of the measurements. Then, laser energy and distance of the focusing lens from the sample were optimized. The gate delay time and the gate width were optimized for single pulse (SP) experiments; the gate delay time and the inter-pulse delay were optimized for the use of double pulse (DP) variant. Results were assessed according to the highest signal to noise ratios and the lowest relative standard deviations of the signal. The sensitivity of the single pulse and the double pulse LIBS for the detection of heavy metals traces, copper (Cu  at 324.754 nm) and lead (Pb  at 405.781 nm), in aqueous solution of copper () sulfate and lead () acetate, was estimated in terms of limits of detection (LODs). As a result, sensitivity improvement of DP LIBS system was observed, the LOD of Cu obtained with DP was calculated 40% lower than LOD gained from SP technique.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Review of Scientific Instruments

ISSN

0034-6748

e-ISSN

1089-7623

Svazek periodika

neuveden

Číslo periodika v rámci svazku

87

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

„043116-1“-„043116-7“

Kód UT WoS článku

000375842500019

EID výsledku v databázi Scopus

2-s2.0-84969651124