Chemical sensor system

Details Chemical sensor system Chemical sensor system

H - Electricity

01

J

H01J 37/08 (2006.01) B01D 59/44 (2006.01) G01N 27/64 (2006.01) H01J 49/00 (2006.01)

Patent

CA 2506030

A chemical sensing apparatus (10) and method for the detection of sub parts- per-trillion concentrations of molecules in a sample by optimizing electron utilization in the formation of negative ions is provided. A variety of media may be sampled including seawater, dry sediment, or undersea sediment. An electrostatic mirror (22) is used to reduce the kinetic energy of an electron beam to zero or near-zero kinetic energy.

L'invention concerne un appareil de détection chimique et un procédé correspondant de détection de concentrations de molécules, en sous-parties par trillion, dans un échantillon, par optimisation d'une utilisation d'électrons dans la formation d'ions négatifs. Des supports variés peuvent être échantillonnés, y compris, l'air, l'eau de mer, des sédiments secs ou des sédiments sous-marins. Un miroir électrostatique est utilisé pour réduire l'énergie cinétique d'un faisceau d'électrons à des valeurs nulles ou voisines de zéro.

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