Indoor Air Quality Monitoring in Mobility Situations by car around Paris using low-cost technologies : methodology and evaluation of performances compared to standard methods

International audienceIn many industrialized countries, people spend more than one hour a day in their vehicles where particulate matter (PM) could reach high concentrations. The lack of concentration data highlights the need to monitor and control the pollution in such atmospheres. In order to tackle this challenge, attention has been redirected towards low-cost sensing units due to their interesting features such portability, highfrequency operation, fast-deployment and cost. However, while the technical developments of the last few decades have fostered the development of new paradigms, the performance of these emerging and innovative products calls for caution and a better understanding of the metrological limits intrinsic to their technology through field studies. Contrary to fixed-point monitoring situations are emerging (LCSQA 2018), there are currently no studies in the car interior and in real driving conditions where the microsensors performances are considered. The project QABINE 2 (Air Quality in Moving Airs 2) provided the opportunity to compare measurements from low-cost sensors and optical indicators with reference ones in identical environments. Thus, low-cost microsensors’ performances evaluation is performed through two in-field campaigns, almost forty different tests