In-situ aerosol nanoparticle characterization by small angle X-ray scattering at ultra-low volume fraction.

ABSTRACT: State-of-the-art aerosol nanoparticle techniques all have one feature in common: for analysis they remove the nanoparticles from their original environment. Therefore, physical and chemical properties of the particles might be changed or cannot be measured correctly. To overcome these shortcomings, we apply synchrotron based small angle X-ray scattering (SAXS) as an in-situ measurement technique. Contrasting other aerosol studies using SAXS, we focus on particle concentrations which allow direct comparison to common aerosol nanoparticle analyzers. To this end, we analyze aerosol nanoparticles at ambient pressure and concentrations of slightly above ~10⁶ cm^-3. A differential mobility particle sizer (DMPS) is operated in parallel. We find that SAXS enables measurement o

SUBMITTER: Bauer PS 

PROVIDER: S-EPMC6408461 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature