NDLI: Improving the accuracy of single particle ICPMS for measurement of size distributions and number concentrations of nanoparticles by determining analyte partitioning during nebulisation

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Journal of Analytical Atomic Spectrometry Vol - 29 Issue - 3

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Improving the accuracy of single particle ICPMS for measurement of size distributions and number concentrations of nanoparticles by determining analyte partitioning during nebulisation

Content Provider	Royal Society of Chemistry (RSC)
Author	Tuoriniemi, Jani Cornelis, Geert Hassellöv, Martin
Copyright Year	2014
Abstract	Application of single particle ICP-MS (spICPMS) for measurement of the size and number concentration, cp, of nanoparticles is currently hampered by insufficient accuracy. The relative contributions of different types of noise to the overall uncertainty during spICPMS measurements of Ag and Au nanoparticle dispersions were quantified showing that the accuracy of spICPMS is mainly limited by the uncertainty in nebulization efficiency (fneb). This uncertainty was improved by correcting fneb for analyte partitioning effects during nebulization, and the calculated Ag and Au nanoparticle sizes were in close agreement with sizes determined by scanning electron microscopy. The duration of the particle events was measured, which allowed correction for incomplete particle events and detector dead time, and determination of the effective dwell time for particle counting. The cp measured with spICPMS agreed with that measured by counting particles deposited on filters, and calculated from the mass concentration of the analyte.
Starting Page	743
Ending Page	752
Page Count	10
File Format	HTM / HTML PDF
ISSN	02679477
Volume Number	29
Issue Number	4
Journal	Journal of Analytical Atomic Spectrometry
DOI	10.1039/c3ja50367d
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Nanoparticle Analyte Scanning electron microscope Concentration
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Analytical Chemistry

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