Zarra et al. (2010) mention two research directions used for studies of odour impact: measurement of odour emissions from stationary sources (methods: sensory analytical and instrumental) and an assessment of the impact of the whole area (methods: modeling dispersion in the air—this method requires the definition and analyze multiple input parameters, which are not always available—and field measurement techniques). Olfactometry research can be divided into indirect and direct olfactometry. Direct (field) olfactometry is based on the analysis of the air directly from the source, while in the case of indirect olfactometry, the sample must be pressed into a suitable container and, in a second stage, be analyzed. Achieved results vary widely between laboratories (Schulz and van Harreveld 1996) and that human factors affect sensory panel performance (Bliss et al. 1996). Also, to avoid condensation or adsorption processes during or storage of the sample, containers made of suitable materials should be used.
Odour Samples Degradation During Detention in Tedlar Bags
Scentroid Odour Measurement