Being specialized in an avant-garde field, i.e. dynamic olfactometry, LOD is in a position to perform the analysis – i.e. measurement and characterization – of odours originating from any type of process. LOD is a company with a big potential: as a matter of fact, dynamic olfactometry is a measurement technique presenting a fast evolution, the use of which can determine changes and improvements in relationships between production premises and inhabited settlements, as well as in the integration of chemical–physical techniques with sensory techniques.
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Dynamic olfactometry is the only methodology acknowledged at the international level for the measurement of odour concentration; and it is the method prescribed by the European norm EN 13725, adopted in Italy in 2004. This method is based on an analysis by a group of selected and trained people, (examiners), consisting in an olfactive test of sampled scented gases, adequately diluted with unscented air according to well defined ratios. Every sample is presented to the examiners in a series of decreasing dilutions, so as to have them identify the perception threshold.
Analyses results can supply conclusive elements to improve environmental impact, estimate the efficiency of abatement systems and do a modelling of odour dispersion in neighbouring areas.
NORMS AND TRAINING

The concept of olfactive nuisance has become particularly important since odour was compared to other traditional pollutants, thus becoming an element to be kept under control, with possible legal consequences [...]

MONITORING – ODOUR PROTOCOL

There are two fundamental actions to the procedure, that of characterizing pollutants and that of recognizing substances constituting the gaseous mixtures, through the measurement of odour concentration, combined with specific [...]

MONITORING – ELECTRONIC NOSES

These are complex instruments that reproduce the human olfactive system, recognizing odours only if they have been experienced already. Sensors are set up on the territory in order to survey [...]

DISPERSION MODELLING

The procedure shows how substances dispersed in the air diffuse in the environment according to various parameters, such as temperature, dampness, pressure, wind speed and direction. Dispersion modelling produces maps [...]

HEDONICITY

New aspects, which are also important, regard the use of olfactive measurement methodologies in the evaluation of odour pleasantness. Defining if an odour is pleasant or unpleasant may also help [...]