Publication detail

Nanoparticle-enhanced laser ablation coupled with ICP-MS

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

Original Title

Nanoparticle-enhanced laser ablation coupled with ICP-MS

Type

conference paper

Language

English

Original Abstract

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.

Keywords

LA-ICP-MS; nanoparticles; laser ablation

Authors

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

Released

1. 9. 2019

Publisher

Spektroskopická společnost Jana Marka Marci

Location

Brno

ISBN

978-80-88195-13-9

Book

EMSLIBS 2019 Book of abstracts

Pages from

241

Pages to

241

Pages count

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"
}