Abrégé

Methods and devices for detecting a target substance on a subject without contacting the subject are disclosed. At least one air jet blows analyte from a surface of the subject into an airflow, the airflow entraining the analyte. A desorption channel desorbs molecules from analyte in a portion of the airflow travelling through the desorption channel. An ionizer forms ions from vapour molecules in the portion of the airflow. At least one mass spectrometer analyzes the ions to detect the target substance. The airflow travels without interruption from the subject to the at least one mass spectrometer. The desorption channel causes a sufficient quantity of molecules to desorb from the analyte to enable the at least one mass spectrometer to detect the target substance.

Classes IPC  ?

• H01J 49/04 - Dispositions pour introduire ou extraire les échantillons devant être analysés, p. ex. fermetures étanches au videDispositions pour le réglage externe des composants électronoptiques ou ionoptiques
• H01J 49/12 - Sources d'ionsCanons à ions utilisant une décharge d'arc, p. ex. du type duo-plasmatron
• H01J 49/42 - Spectromètres à stabilité de trajectoire, p. ex. monopôles, quadripôles, multipôles, farvitrons