P1.9.24 Development of a standardized multi-sensors system for on-line atmospheric pollution monitoring

14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany
P1.9 Technology and Application
Z. Al Barakeh, P. Breuil, C. Pijolat, J. Viricelle - Centre SPIN, Ecole des Mines de Saint Etienne (France), N. Redon, N. Locoge - Département Chimie et Environnement, Ecole des Mines de Douai (France)
1232 - 1235


Air Pollution monitoring and measurement are done by the use of sampling techniques and analysis equipment often heavy, complex and expensive. Although these methods offer us a high measurement precision their use is in a disadvantage for quality oriented applications where simple information with low precision can be sufficient. The use of semiconductor gas sensors networks can provide the answer for a "low cost" system intended for such applications in air pollution detection fields. The main disadvantages of these sensors are their low reproducibility and low long-term stability. Three identical portable autonomous sensors arrays were built to classify different type of encountered atmospheric pollution like urban, photochemical, or traffic pollution. A calibration procedure was established to correct any sensors drift. A standardization test was developed in order to standardize all sensors sensitivity. Complementary tests under low gas concentrations were made to prove the ability of such system to detect sub-ppm gas concentration. The obtained system was used for on-site pollution monitoring in association with the air quality monitoring networks in France (AASQA).