Jaakko Yli-Ojanperä, Jonna Kannosto, Marko Marjamäki, Jorma Keskinen

  • Department of Physics, Tampere University of Technology, P.O. Box 692, FIN-33101 Tampere, Finland

Received: July 31, 2010
Revised: July 31, 2010
Accepted: July 31, 2010
Download Citation: ||https://doi.org/10.4209/aaqr.2009.10.0060 

  • Download: PDF


Cite this article:
Yli-Ojanperä, J., Kannosto, J., Marjamäki, M. and Keskinen, J. (2010). Improving the Nanoparticle Resolution of the ELPI. Aerosol Air Qual. Res. 10: 360-366. https://doi.org/10.4209/aaqr.2009.10.0060


 

ABSTRACT


The nanoparticle resolution of Electrical Low Pressure Impactor (ELPI) has been improved by designing and manufacturing a new impactor stage for the impactor. The measured cutpoint of the stage is 16.7 nm. The additional stage does not affect the properties (e.g. cutpoints) of other impactor stages. The performance of the new impactor construction was evaluated with laboratory and heavy duty diesel exhaust measurements. Based on the laboratory measurements the lower limit for the measured geometric mean diameter is expanded down to 11 nm. The diesel exhaust measurements made parallel with the new and the old construction show that the results are equal at large particle sizes. For nanoparticles, the resolution and precision are improved with the new construction. Using the new impactor stage and density analyzing method density can be analyzed even for 10 nm particles.


Keywords: Nanoparticle; Impactor; ELPI


Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

Latest coronavirus research from Aerosol and Air Quality Research

2018 Impact Factor: 2.735

5-Year Impact Factor: 2.827


SCImago Journal & Country Rank

Sign up to AAQR Newsletter

Sign up to receive latest research, letters to the editors, and review articles, delivered to your inbox every second week!