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Poster communications

Contribution to SPICPMS Accurate Spherical Gold Nanoparticles Size Determination: a Comparison with Small Angle X-ray Scattering

Valérie Geertsen 1 Olivier Taché 1 Elodie Barruet 1 Frédéric Gobeaux 1 Jean-Luc Lacour 2
1 LIONS - Laboratoire Interdisciplinaire sur l'Organisation Nanométrique et Supramoléculaire
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
2 LANIE - Laboratoire de développement Analytique Nucléaire Isotopique et Elémentaire
SEARS - Service d'études analytiques et de réactivité des surfaces : DEN/DPC
Abstract : Small Angle X-rays Scattering Spectroscopy (SAXS) is the method of choice for nanopar-ticle diameter and concentration determination. It is metrologically traceable for spherical nanoparticle mean diameter determination and does not require any sample preparation or calibration. On the other hand, Single Particle ICPMS (SPICPMS) is still under developments and requires involved process clarification and accuracy improvement. The strategy of this presentation based on 6 spherical gold nanoparticle suspensions distributed over a large size range (30, 50, 60, 80,100 and150 nm), is the comparison of the two techniques to study comprehensively SPICPMS performance and observe phenomena: Potential matrix effect are eliminated by stabilizing nanoparticles with chitosan in HCL. Chitiosan encapsulates nanoparticles, stabilizes their dispersion and protects them from dissolution. Detection counting/analog threshold and timeout appear as the relevant parameters for transient signals. They show an influence not only on mean signal but also on signal distribution. The detection tuning proposed allow to linearly calibrate the nanoparticle distribution signal to cubed diameter over the entire range studied with no sensitivity diminution. Comparing the 3 classical transport efficiency methods (number, size and waste), size transport efficiency is shown as the most accurate. A procedure is proposed, it is validated analyzing three gold nanoparticles suspensions (135, 40 and 50nm). The results are consistent with SAXS measurements.
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Poster communications
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https://hal-cea.archives-ouvertes.fr/cea-02328347
Contributor : Serge Palacin <>
Submitted on : Wednesday, October 23, 2019 - 10:56:19 AM
Last modification on : Thursday, June 25, 2020 - 2:54:33 PM
Long-term archiving on: : Friday, January 24, 2020 - 3:17:06 PM

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Valérie Geertsen, Olivier Taché, Elodie Barruet, Frédéric Gobeaux, Jean-Luc Lacour. Contribution to SPICPMS Accurate Spherical Gold Nanoparticles Size Determination: a Comparison with Small Angle X-ray Scattering. Winter Plasma Conference on Plasma Spectrochemistry, Feb 2019, Pau, France. ⟨cea-02328347⟩

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