Separation and characterization of gold nanoparticle mixtures by flow-field-flow fractionation
We show that using asymmetric flow field flow fractionation it is possible to separate and characterize very low quantities 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 dry 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 AuNP in consumer products such as cosmetics.
CALZOLAI Luigi;
GILLILAND Douglas;
PASCUAL GARCIA Cesar;
ROSSI Francois;
2014-10-21
ELSEVIER SCIENCE BV
JRC60499
0021-9673,
http://www.sciencedirect.com/science/article/pii/S0021967311000641,
https://publications.jrc.ec.europa.eu/repository/handle/JRC60499,
10.1016/j.chroma.2011.01.017,
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