Abstract
The odorants discharged from nine odour sources were classified into eight compound groups and were analysed by a systematic gas-chromatographic technique. The characterisation of trace amounts of the odorants was carried out by using the values for new proposed units (pOUm, pOUa, logOU, OUt and OU; all terms are dimensionless) based on the ratio of the detected concentration to the odour recognition threshold concentration. The graphical representation of these data is effective for rapid recognition of the whole state. A polar co-ordinate pattern display was also proposed for the explanation of the relationship between odour characteristics (odour quality and intensity) and chemical analysis data of the odorants responsible for each odour discharged from nine odour sources. The calculated pOUm and pOUa values of eight odorant groups were plotted on polar co-ordinate circular odour charts. These charts illustrated a characteristic pattern and it was found that the shapes and sizes of each odour chart could characterise the quality and intensity of each odour from the nine odour sources. This was confirmed by investigating examples of processes or factories belonging to the nine odour sources.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
