A system to create stable nanoparticle aerosols from nanopowders

Détails

Ressource 1Télécharger: BIB_515FC144161E.P001.pdf (1124.96 [Ko])
Etat: Serval
Version: Final published version
ID Serval
serval:BIB_515FC144161E
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
A system to create stable nanoparticle aerosols from nanopowders
Périodique
Journal of Visualized Experiments : Jove
Auteur(s)
Ding Yaobo, Riediker Michael
ISSN
1940-087X (Electronic)
ISSN-L
1940-087X
Statut éditorial
Publié
Date de publication
2016
Peer-reviewed
Oui
Numéro
113
Pages
e54414
Langue
anglais
Notes
Publication types: Journal ArticlePublication Status: epublish
Résumé
Nanoparticle aerosols released from nanopowders in workplaces are associated with human exposure and health risks. We developed a novel system, requiring minimal amounts of test materials (min. 200 mg), for studying powder aerosolization behavior and aerosol properties. The aerosolization procedure follows the concept of the fluidized-bed process, but occurs in the modified volume of a V-shaped aerosol generator. The airborne particle number concentration is adjustable by controlling the air flow rate. The system supplied stable aerosol generation rates and particle size distributions over long periods (0.5-2 hr and possibly longer), which are important, for example, to study aerosol behavior, but also for toxicological studies. Strict adherence to the operating procedures during the aerosolization experiments ensures the generation of reproducible test results. The critical steps in the standard protocol are the preparation of the material and setup, and the aerosolization operations themselves. The system can be used for experiments requiring stable aerosol concentrations and may also be an alternative method for testing dustiness. The controlled aerosolization made possible with this setup occurs using energy inputs (may be characterized by aerosolization air velocity) that are within the ranges commonly found in occupational environments where nanomaterial powders are handled. This setup and its operating protocol are thus helpful for human exposure and risk assessment.
Mots-clé
Nanoparticles, Aerosols, Powders, Particle Size, Equipment Design,
Pubmed
Web of science
Open Access
Oui
Création de la notice
14/11/2016 12:21
Dernière modification de la notice
08/05/2019 18:34
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