The project deal with the accomplishment of a smart detector able to identify and quantify toxic gases of neurotoxic and general action class (warfare chemical agents, industrial toxic gases). The detector will be of matrix type, envisaging 3-6 sensors with surface acoustic wave, wich allow in general toxic gas detection at a concentration in air of ppm or under ppm.  The detector will have a alarm level an order of magnitude below the warning level of the concentration for the toxic gas which is going to be identified. It is pursued a real time reaction detector or a delay in resposivity of maximum 2-5 seconds. It will be a robust and portable.