Abstract
This paper discusses the application of three different odour characterization techniques, i.e. chemical analyses, dynamic olfactometry and electronic noses, for the assessment of odour emissions from a landfill site. The results of the chemical analyses, which are useful to determine the chemical composition of odours, show no correlation with the odour concentration values measured by dynamic olfactometry. Olfactometric analyses enabled to measure odour concentration and thereby to quantify the sensory impact of odours. Finally, the continuous ambient air monitoring by electronic noses allowed to quantify the time percentage in which odours are detected at the landfill boundaries and at a receptor, which always turned out to be lower than 15%. This study represents a critical review of employing three different odour characterization methods for differing reasons on the same site, showing that, whilst the results don't necessarily correlate, they do have an intrinsic value, and therefore demonstrating the complexity of environmental odour measurement.
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