Method and means for detecting chemicals on ground

Details Method and means for detecting chemicals on ground Method and means for detecting chemicals on ground

G - Physics

01

N

G01N 1/02 (2006.01) G01N 1/00 (2006.01) G01N 33/24 (2006.01) G01V 9/00 (2006.01)

Patent

CA 2280188

The invention relates to a method and means for detecting chemical contaminants on the ground. A tracked or wheeled vehicle is driven on the ground in question and a sampling screen (2) arranged as a mudflap in connection with at least one track/wheel of the vehicle is thereby contaminated by particles (3) thrown up from the ground, and an air stream carrying substances evaporated from said particles is caused to flow from said sampling screen (2) through a conduit (6) via a detection unit (4) in the vehicle. The sampling screen (2) is preferably provided with a heating device (11) to enhance the evaporation of possible chemicals from said particles.

L'invention concerne un procédé et des moyens de détection de contaminants chimiques sur le sol. En conduisant sur le sol en question un véhicule doté de chenilles ou de roues, un écran d'échantillonnage (2), conçu comme un garde-boue associé à au moins une chenille/roue du véhicule, est contaminé par des particules (3) projetées à partir du sol, et un courant d'air portant des substances évaporées à partir de ces particules traverse ledit écran (20), circule dans une conduite (6) et passe par une unité de détection (4) montée dans le véhicule. De préférence, l'écran d'échantillonnage (2) est doté d'un dispositif chauffant (11) destiné à accroître l'évaporation des éventuels produits chimiques, à partir desdites particules.

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