Nanoparticle-enhanced laser ablation coupled with ICP-MS

Result code in 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>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Nanoparticle-enhanced laser ablation coupled with ICP-MS

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

21001 - Nano-materials (production and properties)

Project

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

Continuities

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

Publication year

2019

Confidentiality

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

Article name in the collection

EMSLIBS 2019 Book of abstracts

ISBN

978-80-88195-13-9

ISSN

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e-ISSN

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Number of pages

1

Pages from-to

241-241

Publisher name

Spektroskopická společnost Jana Marka Marci

Place of publication

Brno

Event location

Brno

Event date

Sep 8, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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