Performance of a scanning mobility particle sizer in measuring diverse types of airborne nanoparticles: Multi-walled carbon nanotubes, welding fumes, and titanium dioxide spray.

摘要: ABSTRACTDirect-reading instruments have been widely used for characterizing airborne nanoparticles in inhalation toxicology and industrial hygiene studies exposure/risk assessments. Instruments using electrical mobility sizing followed by optical counting, e.g., scanning or sequential particle spectrometers (SMPS), considered as the “gold standard” nanoparticles. An SMPS has advantage of rapid response used, but there is little information on its performance assessing full spectrum encountered workplace. In this study, an was evaluated effectiveness producing “monodisperse” aerosol adequacy overall size distribution three test aerosols, each mimicking a unique class real-life nanoparticles: singlets nearly spherical titanium dioxide (TiO2), agglomerates fiber-like multi-walled carbon nanotube (MWCNT), aggregates that constitutes welding fume...