Measurement report: Evaluation of the TOF-ACSM-CV for PM<sub>1.0</sub> and PM<sub>2.5</sub> measurements during the RITA-2021 field campaign

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Abstract 2.5 aerodynamic lens (TOF-ACSM-CV-PM2.5) aims to improve the collection efficiency and chemical characterization of aerosol particles with a diameter smaller than 2.5 µ m. In this study, comprehensive cross-comparisons were performed between real-time online measurements and offline filter analysis with 24 h collection time. The goal was to evaluate the capabilities of the TOF-ACSM-CV-PM2.5 lens, as well as the accuracy of the TOF-ACSM-CV-PM2.5. The experiments were conducted at Cabauw Experimental Site for Atmospheric Research (CESAR) during the RITA-2021 campaign. The non-refractory fine particulate matter (PM1.0 and PM2.5) was measured by two collocated TOF-ACSM-CV-PM2.5 instruments by placing them behind a PM2.5 and PM1.0 inlet, respectively. A comparison between the ACSMs and PM2.5 and PM1.0 filter samples showed a much better accuracy than ± 30  % less given in the previous reports, with average differences less than ± 10  % for all inorganic chemical species. In addition, the ACSMs were compared to the Monitoring Instrument for Aerosol and Gas (MARGA) (slope between 0.78 and 0.97 for inorganic compounds, R 2 ≥  0.93) and a mobility particle size spectrometer (MPSS), measuring the particle size distribution from around 10 to 800 nm (slope was around 1.00, R 2 =  0.91). The intercomparison of the online measurements and the comparison between the online and offline measurements indicated a low bias (< 2.5 lens for the atmospheric observations of particle matter. The two ACSMs exhibited an excellent agreement, with differences less than 7 %, which allowed a quantitative estimate of PM1.0 vs. PM2.5 chemical composition. The result showed that the PM1.0 accounted for about 70 %–80 % of the PM2.5 on average. The NO3 mass fraction increased, but the organic carbon (OC) mass fraction decreased from PM1.0 to PM2.5, indicating the size dependence on chemical composition.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Measurement report: Evaluation of the TOF-ACSM-CV for PM1.0 and PM2.5 measurements during the RITA-2021 field campaign ; volume:24 ; number:6 ; year:2024 ; pages:3405-3420 ; extent:16
Atmospheric chemistry and physics ; 24, Heft 6 (2024), 3405-3420 (gesamt 16)

Klassifikation
Soziale Probleme, Sozialdienste, Versicherungen

Urheber
Liu, Xinya
Henzing, Bas
Hensen, Arjan
Mulder, Jan
Yao, Peng
van Dinther, Danielle
van Bronckhorst, Jerry
Huang, Rujin
Dusek, Ulrike

DOI
10.5194/acp-24-3405-2024
URN
urn:nbn:de:101:1-2024032207591336245353
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
14.08.2025, 11:04 MESZ

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Beteiligte

  • Liu, Xinya
  • Henzing, Bas
  • Hensen, Arjan
  • Mulder, Jan
  • Yao, Peng
  • van Dinther, Danielle
  • van Bronckhorst, Jerry
  • Huang, Rujin
  • Dusek, Ulrike

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