An effort towards understanding the sources of impurities in generating nanoparticles via liquid-phase methods
Faghihi, Ehsan Majd, Morawska, Lidia, & He, Congrong (2013) An effort towards understanding the sources of impurities in generating nanoparticles via liquid-phase methods. In European Aerosol Conference (EAC 2013), 1-6 September 2013, Clarion Congress Hotel , Prague.
Generating nano-sized materials of a controlled size and chemical composition is essential for the manufacturing of materials with enhanced properties on an industrial scale, as well as for research purposes, such as toxicological studies. Among the generation methods for airborne nanoparticles (also known as aerosolisation methods), liquid-phase techniques have been widely applied due to the simplicity of their use and their high particle production rate. The use of a collison nebulizer is one such technique, in which the atomisation takes place as a result of the liquid being sucked into the air stream and injected toward the inner walls of the nebulizer reservoir via nozzles, before the solution is dispersed. Despite the above-mentioned benefits, this method also falls victim to various sources of impurities (Knight and Petrucci 2003; W. LaFranchi, Knight et al. 2003). Since these impurities can affect the characterization of the generated nanoparticles, it is crucial to understand and minimize their effect.
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