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NanoMet: On-Line Characterization of Nanoparticle Size and Composition
ISSN: 0148-7191, e-ISSN: 2688-3627
Published June 19, 2000 by SAE International in United States
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NanoMet is a new technique for on-line characterization of nanoparticle size and composition and their diffusion behavior. NanoMet consists of a pocket size diluter with tunable dilution ratio, a sampling interface for high concentration measurements and two on-line sensors. Simultaneous operation of the two sensors yields both the active surface (corona discharge diffusion charging sensor, DC) and the active surface times material coefficient (photoelectric aerosol sensor, PAS). Division of the readings provides the material coefficient which turns out to be characteristic of the particle source. Thus, information on source and toxicity of the aerosol is obtained. Thanks to the diluter and the sensitivity of the sensors the measurable concentration range stretches from (vehicle) raw emissions to ambient air / occupational exposure measurements. A particle sizing unit with a diffusion battery and a centrifuge is under development.
NanoMet measures particles in-situ, i.e. as aerosol. The time resolution (down to 1 second) and the sensitivity of the instrument facilitates transient measurements in the whole concentration range. For diesel soot, excellent correlation of NanoMet readings and the concentration of elemental carbon (EC) was found. The instrument is available in various configurations from tailpipe measurement systems fitting in a large suitcase down to pocket size sensors for occupational exposure monitoring. It is robust enough to be operated under fairly rough field conditions. The design can be simplified to a point where no special skills in particle measurement are required any more to operate NanoMet. This paper reports results and experience with a unit from the first series of equipment and discusses applications and accessories beyond the present state.
CitationKasper, M., Matter, U., and Burtscher, H., "NanoMet: On-Line Characterization of Nanoparticle Size and Composition," SAE Technical Paper 2000-01-1998, 2000, https://doi.org/10.4271/2000-01-1998.
Particle Size Distribution in the Exhaust of Diesel and Gasoline Engines
Number: SP-1552; Published: 2000-06-19
Number: SP-1552; Published: 2000-06-19
- BRISKA Gysin, C. 1999
- Filippov, A. 1993 Charging of Aerosols in the Transition Regime J. Aerosol Sci. 24 423 436
- Hueglin, Ch. Scherrer, L. Burtscher, H. 1997 An Accurate, Continuously Adjustable Dilution System (1:10 to 1:104) for Submicron Aerosols J. Aerosol Sci. 28 1049 1055
- Jing, L. 1999 Generation of Combustion Soot Particles for Calibration Purposes 3rd ETH Zurich Workshop “Nanoparticle Measurement”, Proceedings 1999
- Keller, A. et al. 2000 Evaluation of the Surface Properties of Nanoparticles J. Aerosol Sci.
- Matter, U. Siegmann, H.C. Burtscher, H. 1998 Particle Emissions from Diesel Engines - Measurement of Combustion Exhaust Occupational Exposure 2nd ETH Zurich Workshop “Nanoparticle Measurement”, Proceedings 1998
- Matter U. Siegmann H.C. Burtscher H. 1999 Dynamic Field Measurement of Submicron Particles from Diesel Engines. Environ. Sci. Technol. 33 1946-1952
- Matter, U. et al. 1999 Formation of Volatile Particles in Traps 3rd ETH Zurich Workshop “Nanoparticle Measurement”, Proceedings 1999
- Mayer, A. Matter, U. Scheidegger, G. Czerwinski, J. Wyser, M. Kieser, D. Weidhofer, J. 1999 Particulate Traps for Retro-Fitting Construction Site Engines VERT: Final Measurements and Implementation SAE Technical Paper Series, 1999-01-0116
- Pandis, S.N. Baltensperger, U. Wolfenbarger, J.K. Seinfeld, J.H. 1991 Inversion of Aerosol Data from the Epiphaniometer J. Aerosol Sci. 22 417 428
- Wasserkort, R. Hartmann, A. Widmer, R. M. Burtscher, H. 1998 Correlation between On-Line PAH Detection in Airborne Particle Samples and Their Bacterial Genotoxicity, Ecotoxicology and Environmental Safety 40 126 136