NDLI: Elemental recoveries for metal oxide nanoparticles analysed by direct injection ICP-MS: influence of particle size, agglomeration state and sample matrix

Content Provider	Royal Society of Chemistry (RSC)
Author	Legros, Samuel Fiorentino, Brice Motellier, Sylvie Guiot, Arnaud
Copyright Year	2014
Abstract	The direct analysis of metal-oxide nanoparticles (NPs) in suspension by inductively coupled plasma-mass spectrometry (ICP-MS) has been investigated. The roles of the chemical nature, size, crystalline form and agglomeration state of the particles in the recovery rate – compared with dissolved samples – have been investigated. Various sample matrices have been tested with the aim to optimize the decomposition process of the particles in the plasma, which governs the quality of the ICP-MS analytical results. It was found that, for SiO2 and ZnO, full recovery was readily obtained in 10−3 mol L−1 NaOH or 0.1% HNO3, respectively. In the case of more stable oxides like TiO2 or CeO2, a positive correlation of the recovery with the concentration of HNO3 in the matrix could be observed, although only NaOH could lead to identical sensitivities for NPs and ionic solutes. Al2O3 could not be satisfactorily analysed (80% recovery at the most). Size and agglomeration state characterization of the selected particles was performed by scanning electron microscopy and dynamic light scattering. The agglomeration state was found to be of minor influence but the size of the primary particle as well as its crystalline phase plays an important role in the analytical recovery.
Starting Page	2294
Ending Page	2301
Page Count	8
File Format	HTM / HTML PDF
ISSN	02679477
Volume Number	29
Issue Number	12
Journal	Journal of Analytical Atomic Spectrometry
DOI	10.1039/c4ja00213j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Blood plasma Nitric acid Composite material Scanning electron microscope Dynamic light scattering
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Analytical Chemistry

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