Technology is presented for the high efficiency concentration of fine and ultrafine airborne particles into a small fraction of the sampled airflow by condensational enlargement, aerodynamic focusing and flow separation. A nozzle concentrator structure including an acceleration nozzle with a flow extraction structure may be coupled to a containment vessel. The containment vessel may include a water condensation growth tube to facilitate the concentration of ultrafine particles. The containment vessel may further include a separate carrier flow introduced at the center of the sampled flow, upstream of the acceleration nozzle of the nozzle concentrator to facilitate the separation of particle and vapor constituents.
This invention was made with government support under the following Grant Nos: U.S. Dept. of Energy Grand #DE-FG02-08ER86335 and DE-FG02-04ER86179; and National Institutes of Environmental Health Grant #ES014997. The government has certain rights in the invention.