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Nanoparticles with diameters from 10 nm to 1000 nm were analyzed using the scanning mobility particle sizer (SMPS) continuously from October 2020 till May 2021. Mass spectrometry was performed in 129 channels. Measurements of some other air pollution parameters were used for comparison and analysis. A large number of nanoparticles was detected in the period of strong air pollution, as expected. However, a surprisingly large number of nanoparticles was detected in spring and summer, where other parameters of air pollution were good. [ABSTRACT FROM AUTHOR]

A novel method for indoor air quality monitoring is presented in this paper. It is based on the network of smart sensors permanently connected to the cloud. The prototype system, consisting of 10 smart sensors is evaluated in laboratory and real use. Each smart sensor was able to measure air temperature, relative humidity, particulate matter concentration, and carbon dioxide concentration. The cloud-based architecture of the system is explained, followed by the calibration method and real scenario results. The system proved to be suitable for real-time monitoring of indoor air quality parameters for large buildings. [ABSTRACT FROM AUTHOR]

A new method for mobile measurements of black carbon (BC) concentration measurements is presented in this paper. An advanced pocket-sized aethalometer with 5 wavelengths and dual-spot technology was used. Different measurement locations were selected to evaluate the contribution of car emissions and biomass burning emissions during the winter campaign in heavily polluted urban environments. A model based on the Angstrom exponent is proposed for source apportionment studies. Obtained results confirmed the system’s capability to distinguish BC sources with high temporal and spatial resolution. [ABSTRACT FROM AUTHOR]

An advanced system for determination of face mask efficiency is developed and presented in this paper. It is based on a high-end scanning mobility particle sizer (SMPS), which was able to detect nanoparticles from the diameter of 10 nm up to 1000 nm in 129 equidistant channels. Two fitting installations for face masks were used: a mannequin doll head, to simulate realistic use of face mask and a tight-fit system which prevents the air leak. The SMPS-based system was able to determine mask efficiency for different particle sizes. [ABSTRACT FROM AUTHOR]