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Measurement of ultrafine aerosol size distributions by a combination of diffusion screen separators and condensation particle counters

Feldpausch, Philipp und Fiebig, Markus und Fritzsche, Lutz und Petzold, Andreas (2006) Measurement of ultrafine aerosol size distributions by a combination of diffusion screen separators and condensation particle counters. Journal of Aerosol Science, 37 (5), Seiten 577-597. DOI: 10.1016/j.jaerosci.2005.04.009.

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Offizielle URL: http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235810%232006%23999629994%23622069%23FLA%23&_cdi=5810&_pubType=J&view=c&_auth=y&_acct=C000007338&_version=1&_urlVersion=0&_userid=100058&md5=88ce0fb5ba5b523a04f76b4fccc6fb1f

Kurzfassung

The quasi-real-time measurement of ultrafine aerosol size distributions by a combination of a diffusion screen separator (DS), which is similar to a single stage of a screen-type diffusion battery, and a condensation particle counter (CPC) was developed, characterised, and evaluated. The instrument reports information on the particle size distribution for particle diameters between approximately 20 and 100 nm. The instrument system was characterised for various operation conditions in order to provide reliable instrument transfer functions for data inversion purposes. The penetration behaviour of specified diffusion screens was examined for the expected range of operation pressure conditions (200 hPa ≤ p ≤ 955 hPa), number of diffusion screens (3 ≤ nS ≤ 17), and volumetric flow rates (0.99 ≤ q ≤ 1.89 Lpm). The comparison of results between the calibration experiments and the "classical" filtration theory of particle deposition on fibres or wires shows excellent agreement for the entire range of investigated operation conditions. The calibration results were evaluated in a validation experiment using monodisperse test aerosol particles. In a final study, the entire measurement system consisting of three parallel-operated CPC–DS combinations was successfully applied to polydisperse laboratory-generated test aerosols. A comparison of size distributions obtained from a differential mobility analyser (DMA) and the presented instrument shows very close agreement for cases with the modal diameter of the investigated aerosol size distribution being in the sub-100 nm range.

Dokumentart:Zeitschriftenbeitrag
Titel:Measurement of ultrafine aerosol size distributions by a combination of diffusion screen separators and condensation particle counters
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Feldpausch, PhilippLMU München, München
Fiebig, MarkusNICHT SPEZIFIZIERT
Fritzsche, LutzBundesanstalt für Materialforschung und- prüfun, Berlin
Petzold, AndreasNICHT SPEZIFIZIERT
Datum:Mai 2006
Erschienen in:Journal of Aerosol Science
Referierte Publikation:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:37
DOI :10.1016/j.jaerosci.2005.04.009
Seitenbereich:Seiten 577-597
Status:veröffentlicht
Stichwörter:Nanoparticles, Size distribution measurement, Diffusion battery, Diffusion screen, Real-time particle measurement
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:L VU - Luftverkehr und Umwelt (alt)
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L VU - Luftverkehr und Umwelt
DLR - Teilgebiet (Projekt, Vorhaben):L - Schadstoffarmer Luftverkehr (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Atmosphärische Spurenstoffe
Hinterlegt von: Dr.rer.nat. Markus Fiebig
Hinterlegt am:11 Dez 2006
Letzte Änderung:11 Nov 2014 21:56

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