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Use of mobile aerosol dosimeter to estimate seasonal concentrations of ultrafine particles

A. ILIE1,2, J. VASILESCU1, C. TALIANU1,* , S. ANDREI1, A. M. DANDOCSI1, A. V. DANDOCSI1,3

Affiliation

  1. National Institute of Research and Development for Optoelectronics - INOE 2000, 409 Atomistilor St., 077125, Măgurele, Romania
  2. Faculty of Geography, University of Bucharest, 1 Nicolae Bălcescu Blvd., 010041, Bucharest, Romania
  3. UNST Politehnica of Bucharest, 1-3 Iuliu Maniu Blvd., Bucharest, 061071, Bucharest, Romania

Abstract

The study was carried out for Bucharest, Romania, and assessed the ability of aerosol dosimeter measurements to highlight the seasonal and spatial variability of ultrafine particle emissions. For this purpose, a mobile campaign of measurements on the design route was conducted for two distinct periods: May-July 2022 and January-February 2023, during which 15 routes were successfully completed for each period, covering almost a 100 km long route. The results indicate that the aerosol dosimeter is able to highlight the main sources of ultrafine particle emissions as well as their variability. Thus, for both seasons, the highest concentrations of ultrafine particles were recorded in areas with heavy traffic, such as boulevards and important intersections, which are predominant sources of ultrafine particles in urban environments. Moreover, significant diurnal variations in the concentrations of ultrafine particles were observed, especially in the cold season, with peaks occurring during the morning and evening hours, periods of time associated with household activities and home heating. These results ensure the premise that calibrated and inter-compared aerosol dosimeters can be used in air quality monitoring networks in urban areas as well as in mobile measurement campaigns..

Keywords

Aerosol dosimeter, Ultrafine particles, Mobile measurements, Air quality.

Submitted at: March 21, 2025
Accepted at: Aug. 5, 2025

Citation

A. ILIE, J. VASILESCU, C. TALIANU, S. ANDREI, A. M. DANDOCSI, A. V. DANDOCSI, Use of mobile aerosol dosimeter to estimate seasonal concentrations of ultrafine particles, Journal of Optoelectronics and Advanced Materials Vol. 27, Iss. 7-8, pp. 368-381 (2025)