<abstract xmlns="http://www.w3.org/1999/xhtml">

The paper presents preliminary analysis of measurements of the mass concentrations of PM2.5 in the indoor environment, obtained with the use of two optical instruments: (Grimm device and low-cost sensor) and a sampler based on the gravimetric method (SKC). It was found that the measurement of PM2.5 using an optical device with active sampling underestimates the actual mass concentration of this mode (PM2.5), while measurement using an optical device with passive sampling of air overestimates the concentration of PM2.5. It has been shown that the physical relationship between the mass concentrations of airborne particles obtained with an optical sensor (<italic>Csensor
</italic>) and concentrations obtained with the gravimetric method (<italic>Cgrav
</italic>) is not linear. However, for practical reasons, the correct (“true”) concentration levels of PM2.5 in an indoor environment can be estimated by converting sensor data according to a simple linear equation, i.e., <italic>Cgrav
</italic> = <italic>a Csensor
</italic>. The coefficient a for the sensor used was estimated at 0.45.
</abstract>

The paper presents preliminary analysis of measurements of the mass concentrations of PM2.5 in the indoor environment, obtained with the use of two optical instruments: (Grimm device and low-cost sensor) and a sampler based on the gravimetric method (SKC). It was found that the measurement of PM2.5 using an optical device with active sampling underestimates the actual mass concentration of this mode (PM2.5), while measurement using an optical device with passive sampling of air overestimates the concentration of PM2.5. It has been shown that the physical relationship between the mass concentrations of airborne particles obtained with an optical sensor (Csensor
) and concentrations obtained with the gravimetric method (Cgrav
) is not linear. However, for practical reasons, the correct (“true”) concentration levels of PM2.5 in an indoor environment can be estimated by converting sensor data according to a simple linear equation, i.e., Cgrav
 = a Csensor
. The coefficient a for the sensor used was estimated at 0.45.

Relationship Between the Concentrations Of PM2.5 Indoors Obtained by Using the Optical and Gravimetric Methods: Preliminary Analysis

Architecture, Civil Engineering, Environment

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Relationship Between the Concentrations Of PM Indoors Obtained by Using the Optical and Gravimetric Methods: Preliminary Analysis

The paper presents preliminary analysis of measurements of the mass concentrations of PM2.5 in the indoor environment, obtained with the use of two optical...

Relationship Between the Concentrations Of PM_2.5 Indoors Obtained by Using the Optical and Gravimetric Methods: Preliminary Analysis

Article Category: research-article

Pubblicato online: 27 gen 2021

Pagine: 105 - 113

Ricevuto: 26 ott 2020

Accettato: 23 nov 2020

DOI: https://doi.org/10.21307/acee-2020-035

Parole chiave
PM, Mass concentration, Gravimetric method, Optical method, Low-cost sensors, Indoor air

© 2020 Jozef S. Pastuszka published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Relationship Between the Concentrations Of PM2.5 Indoors Obtained by Using the Optical and Gravimetric Methods: Preliminary Analysis

Article Category: research-article

Pubblicato online: 27 gen 2021

Pagine: 105 - 113

Ricevuto: 26 ott 2020

Accettato: 23 nov 2020

DOI: https://doi.org/10.21307/acee-2020-035

Parole chiavePM, Mass concentration, Gravimetric method, Optical method, Low-cost sensors, Indoor air

© 2020 Jozef S. Pastuszka published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Relationship Between the Concentrations Of PM_2.5 Indoors Obtained by Using the Optical and Gravimetric Methods: Preliminary Analysis

Parole chiave
PM, Mass concentration, Gravimetric method, Optical method, Low-cost sensors, Indoor air