Optimization of Liquid Jet System for Laser-Induced Breakdown
Spectroscopy Analysis

a 2016

Optimization of Liquid Jet System for Laser-Induced Breakdown Spectroscopy Analysis

SKOČOVSKÁ, Katarína; Jan NOVOTNÝ; David PROCHAZKA; Pavel POŘÍZKA; Karel NOVOTNÝ et al.

Základní údaje

Originální název

Optimization of Liquid Jet System for Laser-Induced Breakdown Spectroscopy Analysis

Autoři

SKOČOVSKÁ, Katarína; Jan NOVOTNÝ; David PROCHAZKA; Pavel POŘÍZKA; Karel NOVOTNÝ a Jozef KAISER

Vydání

2016 Winter Conference on Plasma Spectrochemistry, 2016

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10406 Analytical chemistry

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14740/16:00089403

Organizační jednotka

Středoevropský technologický institut

Klíčová slova anglicky

LIBS; liquid jet; liquid analysis

Změněno: 15. 2. 2016 16:42, doc. Mgr. Karel Novotný, Ph.D.

Anotace

V originále

Laser-induced breakdown spectroscopy (LIBS) enables direct in-situ analysis of samples in any state of matter. This capability of LIBS enables its utilization in vast variety of applications, for instance bioapplications and online monitoring. We report on the optimization of a system for direct elemental analysis of samples in liquid phase using LIBS technique. This system consists of a peristaltic pump and a thin specially designed nozzle producing a thin flow of liquid solution/suspension. Such arrangement was used to reduce splashes of liquid and sedimentation of suspension and thus to improve the repeatability of an experiment. Firstly, stepping frequency of the peristaltic pump was synchronized with a flash lamp of ablation laser source. Using such synchronization, changes in pressure and hence volume of liquid along the step of the peristaltic pump were mitigated. Changes in the liquid flow volume affect the laser ablation process in the sense of so-called effective volume function. Other phenomenon affecting LIBS signal fluctuations, moving breakdown, was also studied. Afterwards, single pulse (SP; 1064 nm Nd:YAG laser pulse) and double pulse (DP; 1064 nm and 532 nm Nd:YAG laser pulses) LIBS systems were optimized to obtain best possible signal-to-noise ratio. The performance of SP and DPLIBS in a detection of traces of heavy metals was estimated. As a result, significant improvement in sensitivity (limits of detection) of DP LIBS system for analysis of Cu and Pb was observed.

Návaznosti

ED1.1.00/02.0068, projekt VaV

Název: CEITEC - central european institute of technology

Citovat

SKOČOVSKÁ, Katarína; Jan NOVOTNÝ; David PROCHAZKA; Pavel POŘÍZKA; Karel NOVOTNÝ a Jozef KAISER. Optimization of Liquid Jet System for Laser-Induced Breakdown Spectroscopy Analysis. In 2016 Winter Conference on Plasma Spectrochemistry. 2016.

@proceedings{1335843,
   author = {Skočovská, Katarína and Novotný, Jan and Prochazka, David and Pořízka, Pavel and Novotný, Karel and Kaiser, Jozef},
   booktitle = {2016 Winter Conference on Plasma Spectrochemistry},
   keywords = {LIBS; liquid jet; liquid analysis},
   language = {eng},
   title = {Optimization of Liquid Jet System for Laser-Induced Breakdown Spectroscopy Analysis},
   year = {2016}
}

TY  - CONF
ID  - 1335843
AU  - Skočovská, Katarína - Novotný, Jan - Prochazka, David - Pořízka, Pavel - Novotný, Karel - Kaiser, Jozef
PY  - 2016
TI  - Optimization of Liquid Jet System for Laser-Induced Breakdown Spectroscopy Analysis
KW  - LIBS
KW  - liquid jet
KW  - liquid analysis
N2  - Laser-induced breakdown spectroscopy (LIBS) enables direct in-situ analysis of samples in any state of matter. This capability of LIBS enables its utilization in vast variety of applications, for instance bioapplications and online monitoring. We report on the optimization of a system for direct elemental analysis of samples in liquid phase using LIBS technique. This system consists of a peristaltic pump and a thin specially designed nozzle producing a thin flow of liquid solution/suspension. Such arrangement was used to reduce splashes of liquid and sedimentation of suspension and thus to improve the repeatability of an experiment. Firstly, stepping frequency of the peristaltic pump was synchronized with a flash lamp of ablation laser source. Using such synchronization, changes in pressure and hence volume of liquid along the step of the peristaltic pump were mitigated. Changes in the liquid flow volume affect the laser ablation process in the sense of so-called effective volume function. Other phenomenon affecting LIBS signal fluctuations, moving breakdown, was also studied. Afterwards, single pulse (SP; 1064 nm Nd:YAG laser pulse) and double pulse (DP; 1064 nm and 532 nm Nd:YAG laser pulses) LIBS systems were optimized to obtain best possible signal-to-noise ratio. The performance of SP and DPLIBS in a detection of traces of heavy metals was estimated. As a result, significant improvement in sensitivity (limits of detection) of DP LIBS system for analysis of Cu and Pb was observed.
ER  -

SKOČOVSKÁ, Katarína; Jan NOVOTNÝ; David PROCHAZKA; Pavel POŘÍZKA; Karel NOVOTNÝ a Jozef KAISER. Optimization of Liquid Jet System for Laser-Induced Breakdown Spectroscopy Analysis. In \textit{2016 Winter Conference on Plasma Spectrochemistry}. 2016.

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