Title: Separation and characterization of gold nanoparticle mixtures by flow-field-flow fractionation
Authors: CALZOLAI LUIGIGILLILAND DouglasPASCUAL GARCIA CESARROSSI Francois
Citation: JOURNAL OF CHROMATOGRAPHY A vol. 1218 no. 27 p. 4234-4239
Publisher: ELSEVIER SCIENCE BV
Publication Year: 2011
JRC N°: JRC63783
ISSN: 0021-9673
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC63783
DOI: 10.1016/j.chroma.2011.01.017
Type: Articles in Journals
Abstract: We show that using asymmetric flow-field-flow fractionation and UV-vis detector it is possible to separate, characterize, and quantify the correct number size distribution of gold nanoparticle (AuNP) mixtures of various sizes in the 5-60 nm range for which simple dynamic light scattering measurements give misleading information. The size of the collected nanoparticles fractions can be determined both in solution and in the solid state, and their surface chemistry characterized by NMR. This method will find widespread applications both in the process of "size purification" after the synthesis of AuNP and in the identification and characterization of gold-based nanomaterials in consumer products.
JRC Institute:Institute for Health and Consumer Protection

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