Patent ID: 8728397

Claim:
A substance detection device comprising: a chemical substance analyzer comprising: an ion mobility spectrometer; a conduit; and a membrane, wherein the membrane extends across a cross-section of the conduit, wherein the membrane is positioned to have one side and an analysis side opposite the one side, wherein the substance detection device is adapted to direct a portion of a chemical substance to the one side through the conduit so that at least a portion of the chemical substance is transferred to the membrane by interacting with the one side of the membrane, wherein the membrane is adapted to diffuse at least a portion of the chemical substance transferred to the membrane through the membrane to the analysis side; and a particle separator comprising: a cyclone including a collection chamber having a first side with respect to a longitudinal axis of the collection chamber, and a second side with respect to the longitudinal axis of the collection chamber, wherein a particle outlet is located at the first side of the collection chamber, wherein an internal surface of the collection chamber at the first side of the collection chamber is in the form of a protuberance extending into the collection chamber, and wherein the particle outlet extends through the protuberance, wherein the cyclone is configured to cause particles to flow along an inner surface of the collection chamber in a first direction towards the first side of the collection chamber, then flow along an outer surface of the protuberance in a second direction towards the second side of the collection chamber, and then flow through the particle outlet in the first direction, and wherein the outlet is in fluid communication with the conduit such that particles directed through the outlet travel through the conduit and chemical substances which may be on those particles directed through the outlet are transferred to the membrane by interacting with the one side of the membrane.