Analytical and technical aspects of free discharge end of
plasma pencil

k 2016

Analytical and technical aspects of free discharge end of plasma pencil

HRDLIČKA, Aleš; Magda DVOŘÁKOVÁ; Pavel SLAVÍČEK a Viktor KANICKÝ

Základní údaje

Originální název

Analytical and technical aspects of free discharge end of plasma pencil

Autoři

HRDLIČKA, Aleš; Magda DVOŘÁKOVÁ; Pavel SLAVÍČEK a Viktor KANICKÝ

Vydání

European symposium on atomic spectrometry ESAS 2016, 2016

Další údaje

Jazyk

angličtina

Typ výsledku

Prezentace na konferencích

Obor

10402 Inorganic and nuclear chemistry

Stát vydavatele

Maďarsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

stránky konference

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14740/16:00093811

Organizační jednotka

Středoevropský technologický institut

ISBN

978-963-9970-65-6

Klíčová slova česky

plazmová; tužka; kapacitně vázané; plazma; analytický; atomová; emisní; spektroskopie

Klíčová slova anglicky

plasma; pencil; capacitively coupled; discharge; analytic; atomic; emission; spectroscopy

Příznaky

Mezinárodní význam

Změněno: 7. 3. 2017 11:44, Mgr. Aleš Hrdlička, Ph.D.

Anotace

V originále

Plasma pencil has been employed as an alternative excitation source for atomic emission spectroscopy determination of elemental contents in solutions [1, 2]. The new arrangement of the discharge tube enables to measure spectra from the free discharge end without shielding by the quartz wall. Most intensive atomic spectra can be recorded as close as possible to the ground electrode but it is also possible to record the plasma tip radiation in the range of about 0-10 mm from the ground electrode or as long as the discharge tip is formed behind the ground electrode. The pencil sustainability and stability were tested under various operating conditions. Carrier gas and plasma gas flow rates as well as forwarded power were changed and spectra of selected elements were recorded in order to yield best signal to backgroud ratio and discharge stability. It has been found that intensities of some atomic lines increase with decreasing plasma gas flow rate, increasing carrier gas flow rate and slightly with increasing forwarded power up to 180 W in continuous mode. The pulsed mode has not been tested [2]. As in our previous studies elements of first two groups of the periodic table, zinc and copper were tested. In some cases the sensitivity increased by one order of magnitude. Calibration dependences in the range of 0.1 – 10 mg × L-1 were then measured. Also matrix effects similar to those in the previous arrangement were observed. On the other hand, electronic excitation temperature from argon atomic lines, rotational temperature from OH lines and electron number density do not significantly change as a result of mixing argon with ambient air. Matrix effects by alkali salts were also observed but not eliminated under any operating conditions. Preliminary experiments rather show that the relative decrease of the analyte lines intensities in presence of an alkali salt is preserved.

Návaznosti

ED1.1.00/02.0068, projekt VaV

Název: CEITEC - central european institute of technology

ED2.1.00/03.0086, projekt VaV

Název: Regionální VaV centrum pro nízkonákladové plazmové a nanotechnologické povrchové úpravy

LO1411, projekt VaV

Název: Rozvoj centra pro nízkonákladové plazmové a nanotechnologické povrchové úpravy (Akronym: CEPLANT plus)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Rozvoj centra pro nízkonákladové plazmové a nanotechnologické povrchové úpravy

Citovat

HRDLIČKA, Aleš; Magda DVOŘÁKOVÁ; Pavel SLAVÍČEK a Viktor KANICKÝ. Analytical and technical aspects of free discharge end of plasma pencil. In European symposium on atomic spectrometry ESAS 2016. 2016. ISBN 978-963-9970-65-6.

@proceedings{1374846,
   author = {Hrdlička, Aleš and Dvořáková, Magda and Slavíček, Pavel and Kanický, Viktor},
   booktitle = {European symposium on atomic spectrometry ESAS 2016},
   keywords = {plasma; pencil; capacitively coupled; discharge; analytic; atomic; emission; spectroscopy},
   language = {eng},
   isbn = {978-963-9970-65-6},
   title = {Analytical and technical aspects of free discharge end of plasma pencil},
   url = {http://www.esas2016.mke.org.hu/},
   year = {2016}
}

TY  - CONF
ID  - 1374846
AU  - Hrdlička, Aleš - Dvořáková, Magda - Slavíček, Pavel - Kanický, Viktor
PY  - 2016
TI  - Analytical and technical aspects of free discharge end of plasma pencil
SN  - 9789639970656
KW  - plasma
KW  - pencil
KW  - capacitively coupled
KW  - discharge
KW  - analytic
KW  - atomic
KW  - emission
KW  - spectroscopy
UR  - http://www.esas2016.mke.org.hu/
L2  - http://www.esas2016.mke.org.hu/
N2  - Plasma pencil has been employed as an alternative excitation source for atomic emission spectroscopy determination of elemental contents in solutions [1, 2]. The new arrangement of the discharge tube enables to measure spectra from the free discharge end without shielding by the quartz wall. Most intensive atomic spectra can be recorded as close as possible to the ground electrode but it is also possible to record the plasma tip radiation in the range of about 0-10 mm from the ground electrode or as long as the discharge tip is formed behind the ground electrode. The pencil sustainability and stability were tested under various operating conditions. Carrier gas and plasma gas flow rates as well as forwarded power were changed and spectra of selected elements were recorded in order to yield best signal to backgroud ratio and discharge stability. It has been found that intensities of some atomic lines increase with decreasing plasma gas flow rate, increasing carrier gas flow rate and slightly with increasing forwarded power up to 180 W in continuous mode. The pulsed mode has not been tested [2]. As in our previous studies elements of first two groups of the periodic table, zinc and copper were tested. In some cases the sensitivity increased by one order of magnitude. Calibration dependences in the range of 0.1 – 10 mg × L-1 were then measured. Also matrix effects similar to those in the previous arrangement were observed. On the other hand, electronic excitation temperature from argon atomic lines, rotational temperature from OH lines and electron number density do not significantly change as a result of mixing argon with ambient air. Matrix effects by alkali salts were also observed but not eliminated under any operating conditions. Preliminary experiments rather show that the relative decrease of the analyte lines intensities in presence of an alkali salt is preserved.
ER  -

HRDLIČKA, Aleš; Magda DVOŘÁKOVÁ; Pavel SLAVÍČEK a Viktor KANICKÝ. Analytical and technical aspects of free discharge end of plasma pencil. In \textit{European symposium on atomic spectrometry ESAS 2016}. 2016. ISBN~978-963-9970-65-6.

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