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Résultats de la recherche - 31 results
Assessing particle count in electron microscopy measurements of nanomaterials to support regulatory guidance
minimum particle count generally depends on the width of the size and shapedistributions and that the median of the distribution can be determined with the highest precisioncompared to other percentiles. ...
Particle size analysis of iron hydroxide adipate tartrate (IHAT) in a food supplement: Interlaboratory testing of a dynamic light scattering method
constituent particle size, referred to in the implementing regulation as ‘primary particle size’. In this study, a method to determine the constituent particle size distribution of IHAT using the volume-based ...
Physicochemical characterization and genotoxicity assessment of nanomaterials using new approach methodologies
additive [3]. A detailed physicochemical characterization of the test materials is an essential first step in the risk assessment. It includes measuring the particle size distribution, surface charge, ...
A validation methodology for size and shape measurement of nanoplastics by transmission electron microscopy
distribution of particles on the grid was achieved for all materials. Material 3060A is polydisperse with particle sizes ranging from 10 nm to 70 nm. Materials 3200A and 3500A are more uniform in size, however, ...
Characterization of functional nanoparticles applied in face masks by STEM-EDX
a statistically relevant size distribution but their sizes range from 5-200 nm and they have a spheroidal shape. Even though only 4 masks were selected for evaluation of incorporated TiO2 particles, TiO2 was ...
Identification and characterization of inorganic food additives and pearlescent pigments in sprays for food decoration by STEM-EDX
particle size distributions. The methods and findings support regulatory bodies to assess and control possible health risks of mixtures of (nano)particles present in the food chain. Health Topics: Food ...
Identification and characterization of TiO2 nanoparticles in face masks by TEM
https://sciensano.be/fr/biblio/identification-and-characterization-tio2-nanoparticles-face-masks-tem
1866, Mountain View, CA 94042, p.17 (2022) Keywords: Agglomerates electron microscopy energy dispersive X-ray spectroscopy Face mask image analysis Nanoparticles particle size distribution STEMEDX TEM ...
Towards a generic protocol for measuring the constituent particle size distribution of E171 in food by electron microscopy
Publication Type: Peer reviewed scientific article Authors: Eveline Verleysen; Frederic Brassinne; Frederic Van Steen; Nadia Waegeneers; Karlien Cheyns; Ronny Machiels; Stella Mathioudaki; Isaac Ojea Jimenez; Ledecq, Marina; Jan Mast Source: Food Control, ...
Particle size analysis of pristine food-grade titanium dioxide and E 171 in confectionery products: Interlaboratory testing of a SP-ICP-MS screening method and confirmation with transmission electron microscopy.
matrices. A single-particle inductively coupled plasma mass spectrometry (spICP- MS) screening method for the determination of the size distribution and concentration of titanium dioxide particles in ...
Physico-chemical characterisation of the fraction of silver (nano)particles in pristine food additive E174 and in E174-containing confectionery.
Assess (2020) Keywords: E174 particle size distribution Silver Single particle ICP-MS TEM Abstract: Silver (E174) is authorised as a food additive in the EU. The unknown particle size distribution of E174 ...