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KMID : 0895420080180030177
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Journal of Korean Society of Occupational and Enviromental Hygiene
2008 Volume.18 No. 3 p.177 ~ p.184
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Characteristic comparison of Andersen and total suspended particulate samplers in a particulate matter generation chamber
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Park Joo-Myun
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Abstract
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The purpose of this study was to compare the performance characteristics of Andersen and total suspended particulate (TSP) samplers in terms of particle size distribution (PSD) and mass sampling efficiency. In the present study, two Andersen and four TSP samplers were selected and tested to quantitatively estimate human exposure to fly ash representing industrial particulate matter (PM) in a carefully controlled chamber. The PSD characteristics, a mass median aerodynamic diameter and a geometric standard deviation, were found from the sampled PM of airborne samplers in the chamber. An Andersen sampler was compared with a TSP sampler quantified by a Coulter Counter Multisizer, as a reference sampler, to describe the correlation of mass sampling efficiencies between two types of samplers. Overall results indicate that Andersen samplers overestimated small PM due to particle bounce phenomena between impaction stages. There was reasonably good correlation (R2 = 0.89 and 0.91) between the mass sampling efficiencies of Andersen and TSP samplers during the two tests. However, the lower values of slope (0.71 and 0.72) in two tests showed that the Andersen sampler underestimated PM (> AD 10.1 μm) with sufficient inertia due to a relatively lower Andersen inlet velocity at 0.8 m/s comparing with the operating air velocity at 2.1 m/s in the sampling zone of a chamber.
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KEYWORD
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Andersen sampler, TSP sampler, Particulate matter, Particle size distribution, Sampling efficiency, Air sampling
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