Effects of Thermal Treatment on Laser Generated Aerosols using LA-ETV-ICP-MS

VACULOVIČ, Tomáš, Guillong MARCEL, Viktor KANICKÝ a Gunther DETLEF. Effects of Thermal Treatment on Laser Generated Aerosols using LA-ETV-ICP-MS. Canadian journal of analytical sciences and spectroscopy. Ottawa: SPECTROSCOPY SOC. CANADA, roč. 49, č. 6, s. 353-361. ISSN 1205-6685. 2005.

Základní 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

• Originální 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
• Štítky: aerosols, elemental, ETV, LA-ICP-MS

Anotace

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.

Anotace 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

• MSM 143100003, záměr: Název: Studium plazmochemických reakcí v neizotermickém nízkoteplotním plazmatu a jeho interakcí s povrchem pevných látek

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Studium plazmochemických reakcí v neizotermickém nízkoteplotním plazmatu a jeho interakcí s povrchem pevných látek

• MSM0021622411, záměr: Název: Studium a aplikace plazmochemických reakcí v neizotermickém nízkoteplotním plazmatu a jeho interakcí s povrchem pevných látek

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Studium a aplikace plazmochemických reakcí v neizotermickém nízkoteplotním plazmatu a jeho interakcí s povrchem pevných látek