sensitive, chemical-physical, chemical and toxicological device for diagnosis in real matrices

摘要

Detection device (1) for detecting chemical contaminants composition and / or a real matrix, particularly in an environmental fluid in a food or in a biological fluid, said device comprising: - a housing (2) - at least a material (MS1, MS2) responsive to at least one chemical composition and / or contaminants present in said real matrix, - support means (3) for supporting said at least one material (MS1, MS2), - a detection unit (8) for detecting said contaminant chemical composition and / or through changes in electrical properties and / or optical of said material (MS1, MS2), and that for each material (MS1, MS2) responsive to at least one chemical composition and / or contaminant further comprises: - at least one emitter or light source (4) capable of emitting one or more light radiation on said responder material (MS1, MS2), said light source is connected to said attached d detection (8), - an optical receiver (5) for receiving reflected light radiation from said material (MS1, MS2) and / or emitted by it, said optical receiver is connected to said detection unit (8) and transmits one or more signals containing information about the optical properties of said material (MS1, MS2), and - a pair of electrodes (6, 7, 6 ', 7'), each of which has one end in contact with said material (MS1, MS2), and the other end is electrically connected to said detection unit (8), said detection unit (8) is capable of applying, via said electrodes, a potential difference on said responder material (MS1, MS2) such that the latter generates one or more response signals containing information about the electrical properties, said device further comprises that said light source (4) is capable of emitting sequentially said light radiations and each light radiation has a respectiv a predetermined wavelength; and that said detection unit (8) comprises a database (22), within which is stored: - a plurality of predetermined materials responders; - a plurality of optical spectra associated with each of said predetermined responders materials obtained in the absence and presence of a predetermined potential difference applied to each, each optical spectrum associated with interaction with one or more chemical agents composition and / or contaminants predetermined, - a plurality of changes of electrical properties associated with each of said predetermined responders material, each change of electrical property is associated with interaction with one or more chemical composition and / or contaminants, wherein said detection unit (8) is configured to receive signals containing information about the optical properties of said responder material (MS1, MS2), and / or a signal containing information about the electrical properties of the responder material, to obtain optical spectra of each responder equipment (MS1, MS2 ), In the presence and absence of a potential difference applied by said detection unit (8), starting from light radiation received from said optical receiver, and to perform a first comparison between each optical spectrum of said chemical composition and / or contaminant to be detected and the respective optical spectrum stored in said database (22), and / or performing a second comparison between changes in the electrical properties of every responder material (MS1, MS2) and changes the electrical properties of every responder material (MS1, MS2) stored within said database (22), so that from one of said comparison or a combination of such comparisons one or more chemical agents identified composition and / or contaminants in said actual matrix.