Gas sensors are identified as emerging devices for indicative measurements as defined in the European Directive for Air Quality. Compared to reference measurements, gas sensors would allow air pollution monitoring at lower cost. Recent development in sensors platforms mainly focused on the use of amperometric sensors because of the high linearity of their response and their limited drift over time. Conversely, this type of sensors suffers from a lack of selectivity that makes especially difficult to distinguish between ozone and nitrogen dioxide.
Acknowledgments
This study was carried out within the EMRP Joint Research Project ENV01 MACPoll. The EMRP is jointly funded by the EMRP participating countries within EURAMET and the European Union. The authors wish to acknowledge the collaboration of Unitec S.r.l.-IT, Ingenieros Assessores S.A.-SP, SGX Sensotech-CH, IMN2P Marseille University-FR, MIKES and the Aalto University-FR and of our colleague Friedrich Lagler.
