2005
Effects of Thermal Treatment on Laser Generated Aerosols using LA-ETV-ICP-MS
VACULOVIČ, Tomáš; Guillong MARCEL; Viktor KANICKÝ a Gunther DETLEFZákladní údaje
Originální název
Effects of Thermal Treatment on Laser Generated Aerosols using LA-ETV-ICP-MS
Název česky
Effects of Thermal Treatment on Laser Generated Aerosols using LA-ETV-ICP-MS
Autoři
VACULOVIČ, Tomáš (203 Česká republika, garant); Guillong MARCEL (756 Švýcarsko); Viktor KANICKÝ (203 Česká republika) a Gunther DETLEF (276 Německo)
Vydání
Canadian journal of analytical sciences and spectroscopy, Ottawa, SPECTROSCOPY SOC. CANADA, 2005, 1205-6685
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10406 Analytical chemistry
Stát vydavatele
Kanada
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 0.500
Kód RIV
RIV/00216224:14310/05:00013748
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000232246900005
Klíčová slova anglicky
LA-ICP-MS; aerosols; ETV; elemental
Změněno: 24. 5. 2005 16:52, doc. Mgr. Tomáš Vaculovič, Ph.D.
V originále
Aerosol particle size distribution is generally known to be critical for complete sample vaporization upon introduction into an ICP discharge. Particle size dependent composition of laser-produced aerosols has been proved to be responsible for ICP-induced elemental fractionation. The modification of the particle size distribution has been studied based on heating a laser-generated aerosol by means of an electrothermal vaporizer (ETV) installed between an ablation cell and an ICP torch. Overall, 21 singlemetal targets were ablated and heated up by the ETV prior to entering into the ICP discharge. Brass and steel samples were also studied as multielement samples. The aim of this study was a) to modify the particle size distribution towards reduced diameters b) to determine the elemental dependence of the vaporization process, and c) to determine elementdependent laser-induced phase separation into different particle sizes. It was observed that the vaporization depended on melting points of metals, and the particle size distribution could be reduced for low-melting elements. Ablation experiments with brass and steel samples revealed that some elements were separated into individual particle sizes. Signals originating from particles produced by ablation of a zinc target behave similarly in the ETV to Zn signals generated in brass. These studies can be used to indicate the particle vaporization behaviour within the ICP, even knowing that the temperatures used within the ETV are lower than in an ICP.
Česky
Aerosol particle size distribution is generally known to be critical for complete sample vaporization upon introduction into an ICP discharge. Particle size dependent composition of laser-produced aerosols has been proved to be responsible for ICP-induced elemental fractionation. The modification of the particle size distribution has been studied based on heating a laser-generated aerosol by means of an electrothermal vaporizer (ETV) installed between an ablation cell and an ICP torch. Overall, 21 singlemetal targets were ablated and heated up by the ETV prior to entering into the ICP discharge. Brass and steel samples were also studied as multielement samples. The aim of this study was a) to modify the particle size distribution towards reduced diameters b) to determine the elemental dependence of the vaporization process, and c) to determine elementdependent laser-induced phase separation into different particle sizes. It was observed that the vaporization depended on melting points of metals, and the particle size distribution could be reduced for low-melting elements. Ablation experiments with brass and steel samples revealed that some elements were separated into individual particle sizes. Signals originating from particles produced by ablation of a zinc target behave similarly in the ETV to Zn signals generated in brass. These studies can be used to indicate the particle vaporization behaviour within the ICP, even knowing that the temperatures used within the ETV are lower than in an ICP.
Návaznosti
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| MSM0021622411, záměr |
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