Abstract
This paper compares the results for ambient odour concentrations measured by three different techniques, one of which is a new developed technology; Scentroid SM110. This new instrument was developed recently in Canada for assessing ambient odour concentrations. The results obtained by this instrument were compared with two other techniques presently used for assessing ambient odours: the first technique which combines source odour testing with dispersion modelling to predict off-site odour concentration and a second technique; direct ambient odour measurement which includes collection of odour samples at the sensitive receptors with olfactometry analysis. In recent years in Canada, direct ambient odour measurements are more common and are usually combined with source testing and dispersion modelling analysis. A previous study that I carried out determined a correlation between off- site odour concentrations estimated by dispersion modelling analysis which were based on the measured odour emission rates at each potential odour sources and the direct ambient measurements using odour sampling at the sensitive receptors with olfactometry analysis. Since this time however, a new instrument - the Scentroid SM110 was developed for assessing ambient odours, and as a continuation of my previous study, this paper shows the results between the measurements obtained by the new instrument compared to traditional ambient sampling and olfactometry analysis. In addition to the comparison of these two techniques, a third technique is also contrasted to this study; the Nasal Ranger technique, which in a previous study showcased some deviancies.
