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The development of the odour threshold test for environmental odour assessment

The development of the odour threshold test for environmental odour assessment / Ros Nadiah Rosli
Pengeluaran bau boleh menyebabkan gangguan yang serius kepada penduduk di sekitar kawasan tersebut. Di Malaysia, Olfaktometer digunakan untuk mengukur bau berdasarkan nilai kepekatan bau yang dihasilkan. Olfaktometer tersebut amat mahal dan memerlukan operator profesional dalam pengendaliannya. Oleh itu, kajian ini telah dijalankan untuk menghasilkan kaedah pengukuran bau berkonsepkan Beg Bau Tiga Segi. Kaedah pengukuran bau yang dihasilkan di dalam kajian ini mempunyai keunikannya yang tersendiri iaitu roda bau bergambar dan skala keselesaan bau yang digunakan sebagai pengukuran tambahan kepada parameter penilaian bau. Semasa persampelan dan pengukuran bau, sesetengah pembolehubah yang mungkin memberi perubahan kepada nilai kepekatan bau telah dikenalpasti. Pembolehubah tersebut (saiz panel, bilangan beg yang diguna semula dan masa penyimpanan sampel di dalam beg) disaring dengan mengendalikan ujikaji menggunakan rekabentuk factorial. Hasil kajian mendapati hanya bilangan beg yang diguna semula dan masa penyimpanan sampel di dalam beg yang menyebabkan perubahan terhadap nilai kepekatan bau. Di akhir kajian ini, sebuah pokok peramal untuk persampelan dan pengukuran bau dicadangkan untuk analisis pengukuran bau di makmal. Pokok peramal yang dihasilkan di dalam kajian ini berupaya mengenalpasti prosedur penilaian bau dan peralatan yang sesuai untuk digunakan dikawasan pengeluaran bau. _______________________________________________________________________________________________________ Odour emissions can cause serious annoyance in the neigbourhood of the emission source. In Malaysia, the Olfactometer is used to measure the odour emission which reports odour concentration value. The Olfactometer is very expensive and requires professional odour operator to conduct the equipment. Therefore, this research was conducted to develop on alternative odour measurement method using the Triangular Odour Bag concept. The uniqueness of this study was the design of an illustrated odour wheel and the pleasantness scales as additional odour assessment parameter. During odour sampling and measurement, several variables that might give changes to odour concentration value have been detected. The variables (size of panels, number of reused odour bag and storage time of the sampling bag) were screened in order to check their significance by conducting experiments using factorial design. The results show that out of the three variables, only the number of reused odour bag and storage time of the sampling bag significantly influence odour concentration. At the end of the study, a decision tree for sampling and odour measurement was suggested for laboratory odour measurement analysis. The decision tree developed from this study enables the identification of the suitable odour assessment procedure and equipments to a site’s condition.
Contributor(s):
Ros Nadiah Rosli - Author
Primary Item Type:
Thesis
Identifiers:
Accession Number : 875007447
Language:
English
Subject Keywords:
Odour emissions; serious annoyance; neigbourhood
First presented to the public:
4/1/2015
Original Publication Date:
5/8/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Civil Engineering
Citation:
Extents:
Number of Pages - 225
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-06-12 15:04:56.273
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

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