A system to create stable nanoparticle aerosols from nanopowders

Details

Ressource 1Download: BIB_515FC144161E.P001.pdf (1124.96 [Ko])
State: Public
Version: Final published version
Serval ID
serval:BIB_515FC144161E
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
A system to create stable nanoparticle aerosols from nanopowders
Journal
Journal of Visualized Experiments : Jove
Author(s)
Ding Yaobo, Riediker Michael
ISSN
1940-087X (Electronic)
ISSN-L
1940-087X
Publication state
Published
Issued date
2016
Peer-reviewed
Oui
Number
113
Pages
e54414
Language
english
Notes
Publication types: Journal ArticlePublication Status: epublish
Abstract
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.
Keywords
Nanoparticles, Aerosols, Powders, Particle Size, Equipment Design,
Pubmed
Web of science
Open Access
Yes
Create date
14/11/2016 11:21
Last modification date
20/08/2019 14:07
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