Rosli, Ros Nadiah (2015) The Development of The Odour Threshold Test for Environmental Odour Assessment. Masters thesis, Universiti Sains Malaysia.
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Abstract
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 dikawasanpengeluaran 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.
| Item Type: | Thesis (Masters) |
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| Additional Information: | Full text is available at http://irplus.eng.usm.my:8080/ir_plus/institutionalPublicationPublicView.action?institutionalItemId=2105 |
| Subjects: | T Technology T Technology > TA Engineering (General). Civil engineering (General) > TA1-2040 Engineering (General). Civil engineering (General) |
| Divisions: | Kampus Kejuruteraan (Engineering Campus) > Pusat Pengajian Kejuruteraan Awam (School of Civil Engineering) > Thesis |
| Depositing User: | Mr Mohd Jasnizam Mohd Salleh |
| Date Deposited: | 12 Jun 2018 07:06 |
| Last Modified: | 12 Jun 2018 07:06 |
| URI: | http://eprints.usm.my/id/eprint/40767 |
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