ELPI VS. MPSS/APSS: PERFORMANCE ASSESSMENT WITH WELL-CHARACTERIZED AEROSOLS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F25%3A00642892" target="_blank" >RIV/67985858:_____/25:00642892 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0372763" target="_blank" >https://hdl.handle.net/11104/0372763</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

ELPI VS. MPSS/APSS: PERFORMANCE ASSESSMENT WITH WELL-CHARACTERIZED AEROSOLS

Popis výsledku v původním jazyce

There are multiple techniques available for quantifying aerosol particle number and size. Among the most widely used instruments for obtaining high time-resolution data across the nanometer to micrometer scale are aerosol spectrometers such as Mobility Particle Size Spectrometers (MPSS) and Aerodynamic Particle Size Spectrometers (APSS). Cascade impactors remain a central tool in gravimetric analyses of atmospheric aerosols, offering the benefit of size-resolved chemical composition, though they operate with comparatively low temporal resolution. A more advanced variant is the electrical cascade impactor — in our implementation, the Electrical Low-Pressure Impactor (ELPI, Dekati). This instrument combines the conventional gravimetric collection on individual stages with an electrical measurement mode: when particles impinge on a stage, the induced current is recorded in near real time. This dual mode provides both direct mass (or deposit) sampling and instantaneous electrical signals (Eckenberger et al., 2025).nThe ability to conduct real-time (up to ~10 Hz), size-resolved (14 stages) measurements alongside chemical composition analysis makes the ELPI approach particularly powerful. Nevertheless, converting the measured currents into meaningful physical quantities (e.g., number, volume, or mass) is nontrivial, in part due to artifacts such as particle bounce, image-charge effects, or incomplete charge transfer. These biases can depend on particle size, shape, composition, or morphology (e.g. bounce behavior under different humidity or particle types).

Název v anglickém jazyce

ELPI VS. MPSS/APSS: PERFORMANCE ASSESSMENT WITH WELL-CHARACTERIZED AEROSOLS

Popis výsledku anglicky

There are multiple techniques available for quantifying aerosol particle number and size. Among the most widely used instruments for obtaining high time-resolution data across the nanometer to micrometer scale are aerosol spectrometers such as Mobility Particle Size Spectrometers (MPSS) and Aerodynamic Particle Size Spectrometers (APSS). Cascade impactors remain a central tool in gravimetric analyses of atmospheric aerosols, offering the benefit of size-resolved chemical composition, though they operate with comparatively low temporal resolution. A more advanced variant is the electrical cascade impactor — in our implementation, the Electrical Low-Pressure Impactor (ELPI, Dekati). This instrument combines the conventional gravimetric collection on individual stages with an electrical measurement mode: when particles impinge on a stage, the induced current is recorded in near real time. This dual mode provides both direct mass (or deposit) sampling and instantaneous electrical signals (Eckenberger et al., 2025).nThe ability to conduct real-time (up to ~10 Hz), size-resolved (14 stages) measurements alongside chemical composition analysis makes the ELPI approach particularly powerful. Nevertheless, converting the measured currents into meaningful physical quantities (e.g., number, volume, or mass) is nontrivial, in part due to artifacts such as particle bounce, image-charge effects, or incomplete charge transfer. These biases can depend on particle size, shape, composition, or morphology (e.g. bounce behavior under different humidity or particle types).

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10509 - Meteorology and atmospheric sciences

Projekt

<a href="/cs/project/LM2023030" target="_blank" >LM2023030: ACTRIS – účast ČR</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

SBORNÍK XXIV. výroční konference České aerosolové společnosti OVZDUŠÍ V ČASe

ISBN

978-80-908653-3-4

ISSN

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e-ISSN

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Počet stran výsledku

3

Strana od-do

70-72

Název nakladatele

Česká aerosolová společnost

Místo vydání

Praha

Místo konání akce

Hustopeče

Datum konání akce

10. 11. 2025

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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