Journal of Aerosol Science, Vol.25, No.7, 1321-1330, 1994
DEVELOPMENT OF A LOW CUTPOINT SLIT VIRTUAL IMPACTOR FOR SAMPLING AMBIENT FINE PARTICLES
This paper presents the development of a small cut-off size slit-nozzle virtual impactor that operates at a small pressure drop. Operating with a preselective inlet that removes particles larger than 2.5 mu m in aerodynamic size, the impactor can sample ambient particles in the accumulation range (0.1