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Assessment of nanofibre dustiness by means of vibro-fluidization
Dustiness testing probes for the propensity of a powdery material to release dust particles following agitation. For high aspect-ratio materials like nanotubes, the most important dust fraction is that of potentially carcinogenic fibres(WHO-fibres).Wedeveloped the fluidizer particularly for fibres thatmakes use of vibro-fluidization in order to effectively disentangle single fibres and agglomerates of multi-walled carbon nanotube powders. Counting rules for morphological characterization of collected particles by means of electron microscopywere established, allowing quantifying the WHO-fibre fraction...
Workplace exposure and release of ultrafine particles during atmospheric plasma spraying in the ceramic industry
Atmospheric plasma spraying (APS) is a frequently used technique to produce enhanced-property coatings for different materials in the ceramic industry. This work aimed to characterise and quantify the impact of APS on workplace exposure to airborne particles, with a focus on ultrafine particles (UFPs, < 100 nm) and nanoparticles (< 50 nm). Particle number, mass concentrations, alveolar lung deposited surface area concentration, and size distributions, in the range 10 nm–20 μm were simultaneously monitored at the emission source, in the potential worker breathing zone, and in outdoor...
IARC Monographs Volume 111: Some Nanomaterials and Some Fibres
This volume of the IARC Monographs contains evaluations of the carcinogenic hazard to humans of fluoro-edenite fibrous amphibole, silicon carbide fibres and whiskers, and carbon nanotubes. None of these agents had been evaluated previously by the Working Group. Source: http://monographs.iarc.fr/ENG/Monographs/vol111/index.php

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