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Article

Assessment of Integrated Aerosol Sampling Techniques in Indoor, Confined and Outdoor Environments Characterized by Specific Emission Sources

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INSTM and Department of Mechanical and Industrial Engineering, University of Brescia, via Branze, 38, 25123 Brescia, Italy
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Department of Mathematics and Physics, Università Cattolica del Sacro Cuore, via Musei 41, 25121 Brescia, Italy
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Sensor Laboratory, Department of Information Engineering (DII), University of Brescia, via Branze, 38, 25123 Brescia, Italy
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Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Viale Europa, 11, 25123 Brescia, Italy
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Department of Environmental Health, Robert Stempel College of Public Health and Social Work, Florida International University, 11200 SW 8th Street AHC5, Miami, FL 33199, USA
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Authors to whom correspondence should be addressed.
Academic Editors: Artur Badyda and Carlos Lodeiro
Received: 24 March 2021 / Revised: 3 May 2021 / Accepted: 7 May 2021 / Published: 11 May 2021
This paper highlights advantages and drawbacks due to the use of portable and low-cost devices for aerosol sampling, showing their performances during an aerosol monitoring campaign with the parallel use of the gravimetric sampling reference method and a cascade impactor. A specific monitoring campaign was held running all instruments in parallel in indoor, confined, and outdoor environments characterized by local emission sources or particulate matter background concentrations. PM2.5 concentrations were used to compare data emerging from the different instruments adopted. Significant underestimation of PM2.5 emerged when comparing data coming from optical sensors with those estimated by the cascade impactor, whose data resulted in being coherent with gravimetric determination, integrated over the same sampling time. A cause–effect relationship between PM2.5 concentrations and specific emission sources was found when observing the daily patterns of all the real-time sampling devices. It emerged that optical devices are useful for detecting concentration trends, the presence of peak values, or changes in the background value, even if with limited accuracy and precision. The comparison with particle size distributions obtained by the cascade impactor data allowed us to define which particle sizes are not detected by different optical devices, evidencing a low representativeness of optical low-cost sensors for health exposure measurements. The correlations among the specific particle size fractions detected by the cascade impactor and their specific emission sources were particularly high for car emissions in a semi-confined garage area. View Full-Text
Keywords: air monitoring; gravimetric analysis; optical particle counter (OPC); size distribution; cascade impactor; emission sources air monitoring; gravimetric analysis; optical particle counter (OPC); size distribution; cascade impactor; emission sources
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MDPI and ACS Style

Borgese, L.; Chiesa, M.; Assi, A.; Marchesi, C.; Mutahi, A.W.; Kasemi, F.; Federici, S.; Finco, A.; Gerosa, G.; Zappa, D.; Comini, E.; Carnevale, C.; Volta, M.; Placidi, D.; Lucchini, R.; Bontempi, E.; Depero, L.E. Assessment of Integrated Aerosol Sampling Techniques in Indoor, Confined and Outdoor Environments Characterized by Specific Emission Sources. Appl. Sci. 2021, 11, 4360. https://0-doi-org.brum.beds.ac.uk/10.3390/app11104360

AMA Style

Borgese L, Chiesa M, Assi A, Marchesi C, Mutahi AW, Kasemi F, Federici S, Finco A, Gerosa G, Zappa D, Comini E, Carnevale C, Volta M, Placidi D, Lucchini R, Bontempi E, Depero LE. Assessment of Integrated Aerosol Sampling Techniques in Indoor, Confined and Outdoor Environments Characterized by Specific Emission Sources. Applied Sciences. 2021; 11(10):4360. https://0-doi-org.brum.beds.ac.uk/10.3390/app11104360

Chicago/Turabian Style

Borgese, Laura, Maria Chiesa, Ahmad Assi, Claudio Marchesi, Anne W. Mutahi, Franko Kasemi, Stefania Federici, Angelo Finco, Giacomo Gerosa, Dario Zappa, Elisabetta Comini, Claudio Carnevale, Marialuisa Volta, Donatella Placidi, Roberto Lucchini, Elza Bontempi, and Laura E. Depero. 2021. "Assessment of Integrated Aerosol Sampling Techniques in Indoor, Confined and Outdoor Environments Characterized by Specific Emission Sources" Applied Sciences 11, no. 10: 4360. https://0-doi-org.brum.beds.ac.uk/10.3390/app11104360

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