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@article{370032,
author = {Štěpán, Martin and Semerád, Martin and Kanický, Viktor and Otruba, Vítězslav},
article_location = {Prague},
article_number = {9},
keywords = {High frequency; plasma jet; atomic emission spectrometry; argon plasma},
language = {eng},
issn = {0010-0765},
journal = {Collection of Czechoslovak Chemical Communications},
title = {Preliminary investigations of high-frequency atmospheric-pressure plasma jet for atomic emission spectrometry},
volume = {66},
year = {2001}
}
TY - JOUR
ID - 370032
AU - Štěpán, Martin - Semerád, Martin - Kanický, Viktor - Otruba, Vítězslav
PY - 2001
TI - Preliminary investigations of high-frequency atmospheric-pressure plasma jet for atomic emission spectrometry
JF - Collection of Czechoslovak Chemical Communications
VL - 66
IS - 9
SP - 1348
EP - 1348
PB - Inst. Org. Chem. Biochem. Acad. Sci. CR
SN - 00100765
KW - High frequency
KW - plasma jet
KW - atomic emission spectrometry
KW - argon plasma
N2 - The 27.12- and 13.56- MHz plasm-jet discharges are generated in argon at atmospheric pressure. The plasma originates inside the nozzle of the bored metal power electrode and outflows against the counter-electrode. The discharge has a column shape with the diameter about 0.7-1.5 mm and the length 5-30 mm. The 27.12 MHz/100 W and 13.56MHz/1500 W generators are operated at a power of 100 and 200 W, respectively. Stable discharges are obtained within the range from 0.3 to 0.9 L/min Ar. the 27.12 MHz/100 W discharge is capable of accepting dry aerosol while the wet aerosol extinguishes this plasma. On the contrary, wet aerosol can be introduced into the 13.56 MHz/200 W plasma. The vibrational temperature of 3000 K has been determined based on the intensity of the molecular band of the N2 2nd positive system (365-383 nm)in the 27.12 MHz Discharge. Intensioty vs concentration dapendences have been measured with Li 670.784 nm, Na 588.995 nm, Na 589.592 nm, K 766.491 nm and Rb 780.023 nm lines. Limits of detection in the 27.12 MHz/100 W discharge coupled toan ultrasonic nebulizer with desolvation are 0.1 Li, 30 Na, 10 K and 3 Rb (ng/mL). Limit of detection in the 13.56 MHz /200W discharge connected to a pneumatic nebulizer of the Meinhard type is 8 ng/mL for lithium.
ER -
ŠTĚPÁN, Martin, Martin SEMERÁD, Viktor KANICKÝ and Vítězslav OTRUBA. Preliminary investigations of high-frequency atmospheric-pressure plasma jet for atomic emission spectrometry. \textit{Collection of Czechoslovak Chemical Communications}. Prague: Inst. Org. Chem. Biochem. Acad. Sci. CR, 2001, vol.~66, No~9, p.~1348-1358. ISSN~0010-0765.
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