USE OF THIN FILMS OF MESOPOROUS SILICA AS SENSITIVE COMPONENTS IN GRAVIMETRIC SENSORS FOR DETERMINING THE CONCENTRATION OF NITRATE COMPOUNDS IN GASES

摘要

The invention relates to the use of a thin layer of mesoporous silica obtained by a sol-gel process as sensitive material in a gravimetric sensor for detecting vapours of one or more nitrogen-containing compounds. Applications: control/monitoring of atmospheric pollution and of air quality, monitoring of industrial sites.