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Title:
Dynamics of odour release: Application methods for olfactometry and the electronic nose
Author(s): Gregor Brose and Eberhard Hartung, Hohenheim
Publication Date: January 1, 2001
Reference: Dr. Gregor Brose is scientist, Dr. Eberhard Hartung scientific assistant, in the specialist department for Procedural Technology in Livestock Production and Agricultural Buildings (director: Prof. Dr. Thomas Jungbluth), at the Institute for Agricultural Engineering, GarbenstraAYe 9, 70599 Stuttgart, e-mail: gbrose@uni-hohenheim.de Our thanks to Baden-WA?rttemberg for financing this project within BW-PLUS A refereed paper for LANDTECHNIK, the full-length version of which can be accessed under LANDTECHNIK- NET.com

Summary:

For prognostic calculation of odour pollution,
exact knowledge of odour emissions
is necessary. For this, odour concentration
in exhaust air and exhaust volume flow
have to be measured with odour emission
calculated from the product [1, 2]. Olfactometry
is applied as standard method for determining
odour concentration. However,
despite all standardisation, this has shown
to have a few important disadvantages.
Through the non-continuous sampling involved
in individual sampling, only momentary
samples are possible in odour situations
where output is mainly variable. The subjectivity
of human testers plus the relatively
high costs per odour sample are further disadvantages
of olfactometry. In comparison,
the new a

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