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Influence of sample surface topography on laser ablation process
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SYSNO ASEP 0559350 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Influence of sample surface topography on laser ablation process Author(s) Salajková, Z. (CZ)
Holá, M. (CZ)
Procházka, D. (CZ)
Ondráček, Jakub (UCHP-M) RID, ORCID, SAI
Pavliňák, D. (CZ)
Čelko, L. (CZ)
Gregar, F. (CZ)
Šperka, J. (CZ)
Pořízka, P. (CZ)
Kanický, V. (CZ)
De Giacomo, A. (IT)
Kaiser, J. (CZ)Article number 121512 Source Title Talanta. - : Elsevier - ISSN 0039-9140
Roč. 222, Jan 15 (2021)Number of pages 9 s. Language eng - English Country NL - Netherlands Keywords laser ablation LA-ICP-MS ; surface topography ; surface OECD category Analytical chemistry Method of publishing Open access with time embargo (16.01.2023) Institutional support UCHP-M - RVO:67985858 UT WOS 000589944000010 EID SCOPUS 85089552726 DOI 10.1016/j.talanta.2020.121512 Annotation In this work we discuss how sample surface topography can significantly influence the laser ablation (LA) process and, in turn, the analytical response of the LA Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) method. Six different surface topographies were prepared on a certified aluminium alloy sample BAM 311 and SRM NIST 610 to investigate the phenomenon. All the samples were repetitively measured by LA-ICP-MS using a spot by spot analysis. The effect of laser fluence in the range of 1–13 J/cm2 was studied. For majority of measured isotopes, the ICP-MS signal was amplified with roughening of the sample surface. A stronger effect was observed on the Al alloy sample, where the more than sixty-time enhancement was achieved in comparison to the polished surface of the sample. Since the effect of surface topography is different for each analyte, it can be stated that surface properties affect not only the ICP-MS response, but also elemental fractionation in LA. The presented results show that different surface topographies may lead to misleading data interpretation because even when applying ablation preshots, the signal of individual elements changes. The utmost care must be taken when preparing the surface for single shot analysis or chemical mapping. On the other hand, by roughening the sample surface, it is possible to significantly increase the sensitivity of the method for individual analytes and supress a matrix effect. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2023 Electronic address https://hdl.handle.net/11104/0332689
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