| 摘要 |
<p>A sampling inlet (150,163) for sampling aerosols in atmospheric air comprises an inlet housing (163) that has an air flow and an inertial particle classification impactor (182,183,184,185,197) in a series flow path from an inlet opening (155) in the sampler to a filter (203) which collects the material. The sampler is a classification device of the virtual impactor type, utilizing at least one nozzle (182) that receives the flow carrying the aerosols, and a receiver tube that is aligned with the nozzle (182) and spaced therefrom, with a major portion of flow being diverted from the space between the nozzle (182) and the receiver tube (185). The heavier particles are carried by inertia into the receiver tube (185) and then are carried off by minor flow of fluid that passes through the receiver tube (185).</p> |
