Nanoparticle-enhanced laser ablation coupled with ICP-MS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F19%3APU134280" target="_blank" >RIV/00216305:26620/19:PU134280 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Nanoparticle-enhanced laser ablation coupled with ICP-MS

Popis výsledku v původním jazyce

Nanoparticles (NPs) applied to the surface of some solids can increase signals in LIBS [1-2]and also in inductively coupled plasma mass spectrometry (ICPMS) [3]. Drops containingnanoparticles of Ag and/or Au in the size range of 10 to 200 nm were deposited on metallicand ceramic/glass samples, and after being dried, both the samples treated with NPs andplain targets were ablated by one pulse per spot. The laser ablation ICPMS (LA-ICPMS)signals were enhanced for metallic samples modified with NPs in comparison to signalsproduced at the plain, untreated surface.Maps of LA-ICPMS signals recorded for several laser fluences show that the NP-inducedsignal enhancement exceeds even 2 orders of magnitude for metallic samples. Noenhancement was achieved for nonconductive samples. This enhancement is limited to theperipheral annular region of the dried droplet area where NPs are concentrated due to the“coffee stain” effect. Ablation crater profilometric inspection revealed a more uniformmaterial rearrangement over the NP-treated surface compared with the ablated plain target.However, besides a smoother crater bottom, no other evidence of an NP-enhancing effectwas noticed, although an increased ablation rate was anticipated. Limits of detectiondropped by 1 order of magnitude for the minor elements in the presence of NPs. Observedphenomena depend only on the NP surface concentration but not on the material or size ofthe NPs. An electron microprobe study of the collected ablation aerosol has shown thataerosol particles consisting of the target material are aggregated around the NPs. Theparticle size distribution of aerosol measurement showed an increased number oftransported particles in case of nanoparticle-enhanced LA. The combination of changes inparticle size distribution and particle number leads to better transport/vaporizationefficiency, thus enhancing signals of measured analytes.

Název v anglickém jazyce

Nanoparticle-enhanced laser ablation coupled with ICP-MS

Popis výsledku anglicky

Nanoparticles (NPs) applied to the surface of some solids can increase signals in LIBS [1-2]and also in inductively coupled plasma mass spectrometry (ICPMS) [3]. Drops containingnanoparticles of Ag and/or Au in the size range of 10 to 200 nm were deposited on metallicand ceramic/glass samples, and after being dried, both the samples treated with NPs andplain targets were ablated by one pulse per spot. The laser ablation ICPMS (LA-ICPMS)signals were enhanced for metallic samples modified with NPs in comparison to signalsproduced at the plain, untreated surface.Maps of LA-ICPMS signals recorded for several laser fluences show that the NP-inducedsignal enhancement exceeds even 2 orders of magnitude for metallic samples. Noenhancement was achieved for nonconductive samples. This enhancement is limited to theperipheral annular region of the dried droplet area where NPs are concentrated due to the“coffee stain” effect. Ablation crater profilometric inspection revealed a more uniformmaterial rearrangement over the NP-treated surface compared with the ablated plain target.However, besides a smoother crater bottom, no other evidence of an NP-enhancing effectwas noticed, although an increased ablation rate was anticipated. Limits of detectiondropped by 1 order of magnitude for the minor elements in the presence of NPs. Observedphenomena depend only on the NP surface concentration but not on the material or size ofthe NPs. An electron microprobe study of the collected ablation aerosol has shown thataerosol particles consisting of the target material are aggregated around the NPs. Theparticle size distribution of aerosol measurement showed an increased number oftransported particles in case of nanoparticle-enhanced LA. The combination of changes inparticle size distribution and particle number leads to better transport/vaporizationefficiency, thus enhancing signals of measured analytes.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

<a href="/cs/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

EMSLIBS 2019 Book of abstracts

ISBN

978-80-88195-13-9

ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

241-241

Název nakladatele

Spektroskopická společnost Jana Marka Marci

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

8. 9. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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