Detail publikace

Nanoparticle-enhanced laser ablation coupled with ICP-MS

HOLÁ, M. SALAJKOVÁ, Z. HRDLIČKA, A. ONDRÁČEK, J. POŘÍZKA, P. KANICKÝ, V. KAISER, J.

Originální název

Nanoparticle-enhanced laser ablation coupled with ICP-MS

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

LA-ICP-MS; nanoparticles; laser ablation

Autoři

HOLÁ, M.; SALAJKOVÁ, Z.; HRDLIČKA, A.; ONDRÁČEK, J.; POŘÍZKA, P.; KANICKÝ, V.; KAISER, J.

Vydáno

1. 9. 2019

Nakladatel

Spektroskopická společnost Jana Marka Marci

Místo

Brno

ISBN

978-80-88195-13-9

Kniha

EMSLIBS 2019 Book of abstracts

Strany od

241

Strany do

241

Strany počet

1

BibTex

@inproceedings{BUT160092,
  author="HOLÁ, M. and SALAJKOVÁ, Z. and HRDLIČKA, A. and ONDRÁČEK, J. and POŘÍZKA, P. and KANICKÝ, V. and KAISER, J.",
  title="Nanoparticle-enhanced laser ablation coupled with ICP-MS",
  booktitle="EMSLIBS 2019 Book of abstracts",
  year="2019",
  pages="241--241",
  publisher="Spektroskopická společnost Jana Marka Marci",
  address="Brno",
  isbn="978-80-88195-13-9"
}