NBS (National Bureau of Standards) Portable Ambient Particulate Sampler

摘要

The NBS portable ambient particulate sampler is designed to collect the respirable and inhalable particle size fractions at a sampling rate of 6 L/min for 24 hour sampling periods. Particulates are fractionated and collected by series filtration. The collection efficiency of the inlet is measured by comparison with isokinetic probes in the wind tunnel. The collection efficiency and sampling size characteristics of two small personal cyclone samplers are also reported.