Zoekresultaten - 40 results
Method development for analysis of nanoplastics in drinking water and milk using transmission electron microscopy (TEM)
addresses this by developing advanced methodologies for characterizing and measuring NP in food matrices, using transmission electron microscopy (TEM) to assess size and shape — critical parameters for ...
A validation methodology for size and shape measurement of nanoplastics by transmission electron microscopy
Copenhagen, Denmark (2024) Keywords: Metrology nanoplastics TEM uncertainty Validation study Abstract: The spread of plastics in the environment has led to the formation of microplastics (MP s) and even smaller ...
Characterization of functional nanoparticles applied in face masks by STEM-EDX
TEM specimens from the pieces of mask followed the methodology described in Wouters et al.[4] Ultra-thin sections of the textiles were prepared by embedding them in epoxy resin, followed by ultra-thin ...
Antimicrobial resistance in ESBL and indicator E. coli, Campylobacter spp.,Salmonella spp., methicillin-resistant Staphylococcus aureus (MRSA) and Enterococcus faecalis and faecium isolated from food and food-producing animals (primary production) in 2023
were blaSHV-12, bla CTX-M-55 and bla TEM-52. Isolates from bovines and fattening pigs carried genes encoding for enzyme production CTX-M group 1. In addition, a significant number of isolates from ...
Development of novel analytical methods to trace small micro- and nanoplastics in food matrices
identified by Raman microspectroscopy. As a side supporting technique, atomic force microscopy (AFM) and transmission electron microscopy (TEM) have been employed to investigate the size, shape and the ...
Advances in the physicochemical characterization of nanoparticles in a regulatory context.
of optimizing sample (dispersion) and specimen (EM-grids) preparation will be demonstrated, application of conventional TEM for characterizing pristine materials will be shown, and the possibilities of ...
Identification and characterization of TiO2 nanoparticles in face masks by 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 ...
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.
electron microscopy (TEM) was used as a confirmatory technique and served as the basis for bias estimation. The optimisation of the sample preparation step showed that when this protocol was applied to the ...
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 ...
Physico-chemical characterisation of the fraction of silver (nano)particles in pristine food additive E174 and in E174-containing confectionery
Issue 11 (2020) Keywords: E174 food additive silverparticle size distribution spICP-MS TEM Abstract: Silver (E174) is authorised as a food additive in the EU. The unknown particle size distribution of ...