| 摘要 |
PCT No. PCT/SE98/00300 Sec. 371 Date Aug. 19, 1999 Sec. 102(e) Date Aug. 19, 1999 PCT Filed Feb. 20, 1998 PCT Pub. No. WO98/37398 PCT Pub. Date Aug. 27, 1998The 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. |
