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Fibrous-Particle-Measuring Department

The Fibrous-Particle-Measuring Department at the Faculty of Medicine Göttingen has primarily been employed as an internal measuring department for the university medical centre.
The department's main task is the monitoring of the condition of all building in terms of a potentially release of asbestos and other hazard respirable fibers e.g. special man-made mineral fibers (MMMF), as well as final clearance air monitoring linked to asbestos abatements.
Accreditation by the AKMP for group 2: measurement of inorganic fibrous particles; scanning electron microscopy method, from 2000 to 2003.

Scope

  • Determining of airborne respirable fibre concentration values in indoor air linked to sources of asbestos especially (-demolition, -abatement or -servicing) according to the 'Asbestos Guideline' and TRGS 519 (technical guideline for the handling of hazardous materials)

  • Determining the airborne respirable fibre concentration levels in the air for occupational exposure assessment to MMMF (category 2 and 3 according to the 'Ordinance on Hazardous Substances' GefStoffV) to evaluate and optimize work processes (workplace analysis according to TRGS 402)

  • Additional tasks



Measuring instructions

  • VDI 3492 (June 2013):
    Indoor air measurement - Ambient air measurement - Measurement of inorganic fibrous particles; Scanning electron microscopy method

  • BGI 505-46 (February 2014):
    Method for determination of inorganic fibers in occupational areas - Scanning electron microscopy method




Principle
In both methods a defined air volume is leading to a capillary pore membrane filter where the airborne particles will be separate at the surface. The analysis of the sample takes place at a scanning electron microscope by way of count and energy-dispersive X-ray analysis (EDXA).