Size and mass determination of silver nanoparticles in an aqueous matrix using asymmetric flow field flow fractionation coupled to inductively coupled plasma mass spectrometer and ultraviolet–visible detectors

2013 ◽  
Vol 1321 ◽  
pp. 100-108 ◽  
Author(s):  
Otmar Geiss ◽  
Claudia Cascio ◽  
Douglas Gilliland ◽  
Fabio Franchini ◽  
Josefa Barrero-Moreno
Keyword(s):  
Silver Nanoparticles ◽  
Flow Field ◽  
Mass Spectrometer ◽  
Inductively Coupled Plasma ◽  
Field Flow Fractionation ◽  
Mass Determination ◽  
Asymmetric Flow ◽  
Inductively Coupled ◽  
Flow Fractionation

scholarly journals Challenges in Determining the Size Distribution of Nanoparticles in Consumer Products by Asymmetric Flow Field-Flow Fractionation Coupled to Inductively Coupled Plasma-Mass Spectrometry: The Example of Al2O3, TiO2, and SiO2 Nanoparticles in Toothpaste

Separations ◽  
2018 ◽  
Vol 5 (4) ◽  
pp. 56 ◽  
Author(s):  
Manuel Correia ◽  
Toni Uusimäki ◽  
Allan Philippe ◽  
Katrin Loeschner
Keyword(s):  
Mass Spectrometry ◽  
Particle Size ◽  
Flow Field ◽  
Inductively Coupled Plasma ◽  
Field Flow Fractionation ◽  
Asymmetric Flow ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Flow Fractionation

According to the current European regulation on cosmetics, any ingredient present as a nanomaterial should be indicated in the ingredient list. There is a need for analytical methods capable of determining the size of the relevant ingredients and thus assessing if these are nanomaterials or not. An analytical method based on asymmetric flow field-flow fractionation (AF4) and inductively coupled plasma-mass spectrometry (ICP-MS) was developed to determine the size of particles present in a commercial toothpaste. Multi-angle light scattering (MALS) was used for on-line size determination. The number-based particle size distributions (PSDs) of the particles were retrieved upon mathematical conversion of the mass-based PSDs recovered from the AF4-ICP-MS fractograms. AF4-ICP-MS allowed to separate and detect Al2O3 and TiO2 particles in the toothpaste and to retrieve a correct TiO2 number-based PSD. The potential presence of particles in the lower size range of the Al2O3 mass-based PSD had a strong impact on sizing and nanomaterial classification upon conversion. AF4 coupled with ICP-MS and MALS was found to be a powerful approach for characterization of different particles in a multiple-particle system such as toothpaste. Confirmation of particle size by a secondary method such as single particle ICP-MS or hydrodynamic chromatography was crucial.

Evaluation of different strategies for determination of selenomethionine (SeMet) in selenized yeast by asymmetrical flow field flow fractionation coupled to inductively coupled plasma mass spectrometry (AF4-ICP-MS)

2020 ◽  
Vol 12 (26) ◽  
pp. 3351-3360
Author(s):  
Daniel B. Alcântara ◽  
Ronaldo F. Nascimento ◽  
Gisele S. Lopes ◽  
Patricia Grinberg
Keyword(s):  
Flow Field ◽  
Inductively Coupled Plasma ◽  
Chemical Speciation ◽  
Field Flow Fractionation ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Flow Fractionation ◽  
Selenized Yeast

This manuscript exemplifies the prospective use of asymmetrical flow field flow fractionation (AF4) coupled to ICP-MS as a simple tool for chemical speciation of selemethionine in selenized yeast.

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