The Mathematics of Blunt Body Sampling [electronic resource] /

Particle samplers are widely used in workplaces in order to determine the concentration of airborne particles in the atmosphere. They generally operate by drawing air, with the aid of a pump, through one or more orifices in the sampler body and housed within the sampler is a filter through which the air is subsequently drawn. The airborne particles are collected on the filter and their concentration is determined. Various samplers have been designed for this purpose including "static" samplers, which are located in a fixed position in a working environment and determine the dust concentration averaged over a prescribed period of time at that one point, and "personal" samplers which are mounted on a working person near to the breathing zone. The ORB sampler, a static sampler designed by Ogden and Birkett (1978) to have approximately the same entry efficiency, for particles with aerodynamical diameter up to at least 25~m, as a human head equally exposed to all wind directions for wind speeds between 0 and 2. 75m1s, is shown in Fig. l. l and examples of personal samplers are shown in Fig. 1. 2a, b and c and represent a single 4mm hole sampler, a seven hole sampler and a 25mm open face filter holder respectively. These three samplers are some of the most commonly used personal samplers for sampling the total airborne concentrations of workplace dusts in Britain.

Bibliographic Details

Main Authors:	Dunnett, Sarah Jane. author., Ingham, Derek Binns. author., SpringerLink (Online service)
Format:	Texto biblioteca
Language:	eng
Published:	Berlin, Heidelberg : Springer Berlin Heidelberg, 1988
Subjects:	Environment., Applied mathematics., Engineering mathematics., Noise control., Soil science., Soil conservation., Waste management., Air pollution., Water pollution., Waste Management/Waste Technology., Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution., Atmospheric Protection/Air Quality Control/Air Pollution., Soil Science & Conservation., Noise Control., Appl.Mathematics/Computational Methods of Engineering.,
Online Access:	http://dx.doi.org/10.1007/978-3-642-83563-6
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