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odor

elicits a physiological response in the olfactory organs. “organoleptic attribute perceptible by the olfactory organ on sniffing certain volatile substances [ISO 5492]”

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Odorant

A substance capable of eliciting an olfactory response. It is simply something that has a distinctive smell. Odorants come in all variations and can be used as a safety precaution…

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odour

elicits a physiological response in the olfactory organs. “organoleptic attribute perceptible by the olfactory organ on sniffing certain volatile substances [ISO 5492]”

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Odour abatement efficiency

The reduction of the odour concentration or the odour flow rate due to an abatement technique, expressed as a fraction (or percentage) of the odour concentration in or the odour…

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Odour Annoyance

Annoyance with respect to odour is a set of complex reactions that takes place when repeated or continued exposure to that odour takes place.  Ultimately, annoyance may lead to a…

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odour concentration

number of odour units present in one meter cubed at standard conditions. Can only be assessed at 1 OUE/m3. The odour concentration is then expressed as multiple of 1 OUE/m3….

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Odour dispersion modeling

Odour dispersion modelling is used to calculate how odour disperse in the atmosphere and what the odour concentration may be at ground level.  There are several models available with advantages…

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Odour emission rate (OER)

Determines the odour concentration per time from a source.  It is calculated by taking the product of the odour concentration and flow rate from a source.  For example, if a…

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Odour impact assessment

Uses a three-level framework in the assessment for odour sources. A Level 1 odour impact assessment is a simple screening based on general site activity and parameters. This level requires…

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Odour intensity

A measure of how strong an odour may be based on an initial perception.  Odour intensity and odour concentration have a non-linear relationship.  For instance, if two distinct odours are…

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