Assessment of the Equivalence of Low-Cost Sensors with the Reference Method in Measuring PM10 Concentration Using Selected Correction Functions
Autor: | Piotr Oskar Czechowski, Tomasz Owczarek, Mariusz Rogulski |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
Coefficient of determination
Geography Planning and Development air pollution TJ807-830 010501 environmental sciences Management Monitoring Policy and Law TD194-195 01 natural sciences Wind speed Renewable energy sources uncertainty of measurement 03 medical and health sciences 0302 clinical medicine GE1-350 030212 general & internal medicine Equivalence (measure theory) 0105 earth and related environmental sciences Mathematics particulate matter Equivalence testing Environmental effects of industries and plants Renewable Energy Sustainability and the Environment Linear model Regression analysis low cost meters Regression PM10 concentrations Environmental sciences equivalence of measurement methods Measurement uncertainty Algorithm |
Zdroj: | Sustainability Volume 12 Issue 13 Sustainability, Vol 12, Iss 5368, p 5368 (2020) |
ISSN: | 2071-1050 |
DOI: | 10.3390/su12135368 |
Popis: | The aim of the work is to demonstrate the possibility of building models to correct the results of measurements of particulate matter PM10 concentrations obtained using low-cost devices. Such devices apply the optical method to values comparable with those obtained using the reference gravimetric method. An additional goal is to show that the results corrected in this way can be used to carry out the procedure for testing equivalence of these methods. The study used generalized regression models (GRMs) to construct corrective functions. The constructed models were assessed using the coefficients of determination and the methodology of calculating the measurement uncertainty of the device. Measurement data from the two tested devices and the reference method were used to estimate model parameters. The measurement data were collected on a daily basis from 1 February to 30 June 2018 in Nowy Sącz. Regression allowed building multiple models with various functional forms and very promising statistical properties as well as good ability to describe the variability of reference measurements. These models also had very low values of measurement uncertainty. Of all the models constructed, a linear model using the original PM10 concentrations from the tested devices, air humidity, and wind speed was chosen as the most accurate and simplest model. Apart from the coefficient of determination, expanded relative uncertainty served as the measure of quality of the obtained model. Its small value, much lower than 25%, indicates that after correcting the results it is possible to carry out the equivalence testing procedure for the low-cost devices and confirm the equivalence of the tested method with the reference method. |
Databáze: | OpenAIRE |
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