Field Assessment of Low-cost Particulate Matter Sensors against Reference Methods

During 2018 and 2019 an assessment of five Clarity® low-cost particle matter sensors has been performed in our Research Centre in the city of Madrid. The instruments performance has been evaluated in different ambient conditions during the study period. The parameters reference bias, time drift, particle composition effect, reproducibility between sensors and meteorological influence over the sensors data have been evaluated in order to determine their importance in the analytical results. Both composition of the atmospheric particles and drift have proved to be influential factors in the performance of these instruments.