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Résultats de la recherche - 14 results

Release of silver and titanium from face masks traded for the general population.

consumers. Direct measurement of release of Ag and TiO particles during normal wearing is problematic by the lack of methodology to test release and to quantify inhaled particles. Therefore in this study, we ...

Application of silver-based biocides in face masks intended for general use requires regulatory control

control SARS-CoV-2 infection needs to be balanced against possible toxicity due to inhalation exposure. Direct measurement of silver (particle) release to estimate exposure is problematic. Therefore, this ...

Evaluation of the types, efficient use and health risks of application of silver-based biocides to provide antimicrobial properties to face masks applied during the Covid-19 crisis

biocides in face masks using electron microscopy and EDX, combined with total silver measurement using ICP- MS or ICP- OES demonstrated the presence of varying amounts and different types of silver-based ...

Acid digestion of nonwoven textiles for measuring their trace element content by ICP techniques

Publication Type: Non-peer reviewed scientific publication Authors: Gabriel Mercier; Karlien Cheyns; Regis Nkanda; Ronny Machiels; Ann Dewinne; Nadia Waegeneers; Jan Mast; Daniela Montalvo Source: Protocol exchange (2022) Keywords: Acid digestion Face mas ...

Identification and characterization of TiO2 nanoparticles in face masks by TEM

particle size measurement of nanoparticles in situ in face masks by conventional and analytical transmission electron microscopy (TEM). The methodology can be applied by following this protocol which ...

IDENTIFICATION, PHYSICOCHEMICAL CHARACTERISATION AND PRELIMINARY RISK ANALYSIS OF TITANIUM DIOXIDE PARTICLES IN FACE MASKS Intermediate report TiO2-Mask COVID-19 project September 2021

fibre-grade TiO2 particles. Because there are no methods available for measuring exposure directly, the methodology that ANSES applied to determine the professional exposure limits to titanium dioxide in its ...

METROFOOD-RI: Pilot services with physical, remote and virtual access

Van Loco Source: Measurement: Sensors, Volume 18 (2021) Keywords: ESFRI Food safety and quality Metrology research infrastructure Abstract: METROFOOD- RI (www.metrofood.eu) is an ESFRI research ...

Agglomeration of titanium dioxide nanoparticles increases toxicological responses in vitro and in vivo

exposed to these suspensions for 24 h and endpoints such as cytotoxicity, total glutathione, epithelial barrier integrity, inflammatory mediators and DNA damage were measured. Large agglomerates of 17 nm ...

Physicochemical Characterization of the Pristine E171 Food Additive by Standardized and Validated Methods.

spectrometry (spICP- MS). The evaluation of selected sample preparation protocols allowed identifying and optimizing the critical factors that determine the measurement of the particle size distribution by TEM. ...

Estimation of the Uncertainties Related to the Measurement of the Size and Quantities of Individual Silver Nanoparticles in Confectionery.

sample preparation, analysis and data interpretation were unraveled. The expanded measurement uncertainty for AgNP sizing was calculated to be 16% in E174-containing food products and increased up to 23% ...

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