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Original Articles

A 10 μm Outpoint Size Selective Inlet for Hi-Vol Samplers

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Pages 544-547 | Received 30 Mar 1984, Accepted 28 Feb 1984, Published online: 09 Mar 2012
 

Abstract

A Two-stage Size Selective Inlet for use with hi-vol samplers was designed and tested. The inlet, which operates at a flow rate of 1.13 m3/min, is shown to have a cutpoint of 9.8 μm and a fractionation curve slope of 1.45. The cutpoint is well within the EPA suggested limits of 10 ± 1 μm. Fractionation is not affected by wind speed over the test range of 2-24 km/h.

Re-entrainment or bounce of solid particles is not of consequence. The difference in penetration of 20 μm aerodynamic diameter glass beads and liquid aerosols is less than 1% at all wind speeds.

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