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|Title:||Separation and characterization of gold nanoparticle mixtures by flow-field-flow fractionation|
|Authors:||CALZOLAI LUIGI; GILLILAND Douglas; PASCUAL GARCIA CESAR; ROSSI Francois|
|Citation:||JOURNAL OF CHROMATOGRAPHY A vol. 1218 no. 27 p. 4234-4239|
|Publisher:||ELSEVIER SCIENCE BV|
|Type:||Articles in periodicals and books|
|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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