Nano Archive

Comparison of four mobility particle sizers with different time resolution for stationary exposure measurements

Asbach, Christof and Kaminski, Heinz and Fissan, Heinz and Monz, Christian and Dahmann, Dirk and Mülhopt, Sonja and Paur, Hanns R. and Kiesling, Heinz J. and Herrmann, Friedhelm and Voetz, Matthias and Kuhlbusch, Thomas A. J. (2009) Comparison of four mobility particle sizers with different time resolution for stationary exposure measurements. Journal of Nanoparticle Research, 11 (7). pp. 1593-1609.

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Exposure to airborne ultrafine and nanoparticles has raised increased interest over the recent years as they may cause adverse health effects. A common way to quantify exposure to airborne particles is to measure particle number size distributions through electrical mobility analysis. Four mobility particle sizers have been subject to a detailed intercomparison study, a TSI Fast Mobility Particle Sizer (FMPS), a Grimm Sequential Mobility Particle Sizer (SMPS+C), and two TSI Scanning Mobility Particle Sizers (SMPSs), equipped with two different condensation particle counters (CPC). The instruments were challenged with either NaCl or diesel soot particles. The results indicate that the sizing of all tested instrument was similar with only the FMPS size distributions consistently shifted toward smaller particle sizes. The Grimm SMPS generally measured higher concentrations and broader distributions than the TSI instruments. The two Grimm DMAs agreed well with each other; however, the TSI SMPS results showed a reproducible dependence on the flow rates. While TSI and Grimm SMPS delivered consistent results for sodium chloride (NaCl) and diesel soot, the FMPS seemed to react differently to the changing particle source than the SMPSs, which may be caused by either the different morphology or particle size dependent effects. For NaCl particles, the FMPS delivered the narrowest distributions and concentrations comparable with TSI SMPSs, whereas for diesel soot, it delivered the broadest distributions and higher concentrations than TSI SMPSs.

Item Type:Article
Uncontrolled Keywords:Electrical mobility - Particle sizer - SMPS - FMPS - Engineered nanoparticles - EHS
Subjects:Technology > Nanotechnology and environmental applications
NanoSafety > Environment, health and safety aspects of nanotechnology
Biomedical Science > Nanotechnology for human health
Material Science > Soft materials
ID Code:7702
Deposited By:Lesley Tobin
Deposited On:01 Apr 2010 13:00
Last Modified:01 Apr 2010 13:00

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