Community Research and Development Information Service - CORDIS


In order to get reliable data on workers' exposure to dust inhalation, a measurement system ideally needs to be able to determine the three particle size fractions according the standard EN 481 ‘Workplace atmospheres: Size fraction definitions for measurement of airborne particles’ (CEN, 1993).

A new reference method for the simultaneous measurement of hazardous particulate matter according EN 481 was developed. This development includes the design and testing of two three stage personal air samplers based on the existing IOM and GSP samplers for the inhalable fraction incorporating additional porous plastic foams. Two foam plugs with different porosity are used to select the thoracic and respirable dust fraction, which reach the lower parts of the lung.

Polyurethane foam has been found to serve well as a sampling and selection medium for particles. The physical and chemical behaviour of porous foams was investigated using microscopy (optical, SEM), elemental and organic chemical analyses. The results indicate that selected foams with predicted geometry and porosity comply with the required penetration curves sufficiently well.

Special attention has also been paid to the development of suitable analysis procedures to determine the mass and chemical composition of the sampled dust collected in each stage.

Download application/zip (573998)

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