Investigation of dielectric constant variations for Malaysians soil species towards its natural background dose
The correlation of natural background gamma radiation and real part of the complex relative permittivity (dielectric constant) for various species Malaysian soils was investigated in this research. The sampling sites were chosen randomly according to soils groups that consist of sedentary, all...
| Main Authors: | , , , , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2017
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/6970/1/P9685_e9b5eb0dd9117f7cb1f620801d11e299.pdf |
| _version_ | 1796869467805843456 |
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| author | Mohd Jafery, Khawarizmi Embong, Zaidi Yee, See Khee Dahlan, Samsul Haimi Ahmad Tajudin, Saiful Azhar Ahmad, Salawati Sahari, Siti Kudnie Maxwell, Omeje |
| author_facet | Mohd Jafery, Khawarizmi Embong, Zaidi Yee, See Khee Dahlan, Samsul Haimi Ahmad Tajudin, Saiful Azhar Ahmad, Salawati Sahari, Siti Kudnie Maxwell, Omeje |
| author_sort | Mohd Jafery, Khawarizmi |
| collection | UTHM |
| description | The correlation of natural background gamma radiation and real part of the complex
relative permittivity (dielectric constant) for various species Malaysian soils was investigated
in this research. The sampling sites were chosen randomly according to soils groups that
consist of sedentary, alluvial and miscellaneous soil which covered the area of Batu Pahat,
Kluang and Johor Bahru, Johor state of Malaysia. There are 11 types of Malaysian soil species
that have been studied; namely Peat, Linau-Sedu, Selangor-Kangkong, Kranji, Telemong�Akob-Local Alluvium, Holyrood-Lunas, Batu Anam-Melaka- Tavy, Harimau Tampoi, Kulai�Yong Peng, Rengam-Jerangau, and Steepland soils. In-situ exposure rates of each soil species
were measured by using portable gamma survey meter and ex-situ analysis of real part of
relative permittivity was performed by using DAK (Dielectric Assessment Kit assist by
network analyser). Results revealed that the highest and the lowest background dose rate were
94 ±26.28 μR hr-1 and 7 ±0.67 μR hr-1 contributed by Rengam Jerangau and Peat soil species
respectively. Meanwhile, dielectric constant measurement, it was performed in the range of
frequency between 100 MHz to 3 GHz. The measurements of each soils species dielectric
constant are in the range of 1 to 3. At the lower frequencies in the range of 100 MHz to 600
MHz, it was observed that the dielectric constant for each soil species fluctuated and
inconsistent. But it remained consistent in plateau form of signal at higher frequency at range
above 600 MHz. From the comparison of dielectric properties of each soil at above 600 MHz
of frequency, it was found that Rengam-Jerangau soil species give the highest reading and
followed by Selangor-Kangkong species. The average dielectric measurement for both
Selangor-Kangkong and Rengam-Jerangau soil species are 2.34 and 2.35 respectively.
Meanwhile, peat soil species exhibits the lowest dielectric measurement of 1.83. It can be clearly seen that the pattern of dielectric measurement for every soil at the frequency above
600 MHz demonstrated a specific distribution which can be classified into two main regions
which are higher and lower between the ranges of 1.83 to 2.35. Pearson correlation analysis
between the frequency of 100 MHz and 2.6 GHz with respect to exposure rate for every soil
species was r = 0.38 and r = 0.51, respectively. This indicates that there was no strong
correlation between both parameter, natural background dose and soils dielectric for each soils
sample. This factor could be contributed by major and minor elements contained in each soils
sample species, especially Ferum, Fe and Silica, Si. |
| first_indexed | 2024-03-05T21:55:20Z |
| format | Conference or Workshop Item |
| id | uthm.eprints-6970 |
| institution | Universiti Tun Hussein Onn Malaysia |
| language | English |
| last_indexed | 2024-03-05T21:55:20Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | uthm.eprints-69702022-04-24T00:31:52Z http://eprints.uthm.edu.my/6970/ Investigation of dielectric constant variations for Malaysians soil species towards its natural background dose Mohd Jafery, Khawarizmi Embong, Zaidi Yee, See Khee Dahlan, Samsul Haimi Ahmad Tajudin, Saiful Azhar Ahmad, Salawati Sahari, Siti Kudnie Maxwell, Omeje TD878-894 Special types of environment, Including soil pollution, air pollution, noise pollution The correlation of natural background gamma radiation and real part of the complex relative permittivity (dielectric constant) for various species Malaysian soils was investigated in this research. The sampling sites were chosen randomly according to soils groups that consist of sedentary, alluvial and miscellaneous soil which covered the area of Batu Pahat, Kluang and Johor Bahru, Johor state of Malaysia. There are 11 types of Malaysian soil species that have been studied; namely Peat, Linau-Sedu, Selangor-Kangkong, Kranji, Telemong�Akob-Local Alluvium, Holyrood-Lunas, Batu Anam-Melaka- Tavy, Harimau Tampoi, Kulai�Yong Peng, Rengam-Jerangau, and Steepland soils. In-situ exposure rates of each soil species were measured by using portable gamma survey meter and ex-situ analysis of real part of relative permittivity was performed by using DAK (Dielectric Assessment Kit assist by network analyser). Results revealed that the highest and the lowest background dose rate were 94 ±26.28 μR hr-1 and 7 ±0.67 μR hr-1 contributed by Rengam Jerangau and Peat soil species respectively. Meanwhile, dielectric constant measurement, it was performed in the range of frequency between 100 MHz to 3 GHz. The measurements of each soils species dielectric constant are in the range of 1 to 3. At the lower frequencies in the range of 100 MHz to 600 MHz, it was observed that the dielectric constant for each soil species fluctuated and inconsistent. But it remained consistent in plateau form of signal at higher frequency at range above 600 MHz. From the comparison of dielectric properties of each soil at above 600 MHz of frequency, it was found that Rengam-Jerangau soil species give the highest reading and followed by Selangor-Kangkong species. The average dielectric measurement for both Selangor-Kangkong and Rengam-Jerangau soil species are 2.34 and 2.35 respectively. Meanwhile, peat soil species exhibits the lowest dielectric measurement of 1.83. It can be clearly seen that the pattern of dielectric measurement for every soil at the frequency above 600 MHz demonstrated a specific distribution which can be classified into two main regions which are higher and lower between the ranges of 1.83 to 2.35. Pearson correlation analysis between the frequency of 100 MHz and 2.6 GHz with respect to exposure rate for every soil species was r = 0.38 and r = 0.51, respectively. This indicates that there was no strong correlation between both parameter, natural background dose and soils dielectric for each soils sample. This factor could be contributed by major and minor elements contained in each soils sample species, especially Ferum, Fe and Silica, Si. 2017 Conference or Workshop Item PeerReviewed text en http://eprints.uthm.edu.my/6970/1/P9685_e9b5eb0dd9117f7cb1f620801d11e299.pdf Mohd Jafery, Khawarizmi and Embong, Zaidi and Yee, See Khee and Dahlan, Samsul Haimi and Ahmad Tajudin, Saiful Azhar and Ahmad, Salawati and Sahari, Siti Kudnie and Maxwell, Omeje (2017) Investigation of dielectric constant variations for Malaysians soil species towards its natural background dose. In: iNuSTEC2017, 25 – 27 September 2017, Universiti Tenaga Nasional. https://doi.org/10.1088/1757-899X/298/1/012003 |
| spellingShingle | TD878-894 Special types of environment, Including soil pollution, air pollution, noise pollution Mohd Jafery, Khawarizmi Embong, Zaidi Yee, See Khee Dahlan, Samsul Haimi Ahmad Tajudin, Saiful Azhar Ahmad, Salawati Sahari, Siti Kudnie Maxwell, Omeje Investigation of dielectric constant variations for Malaysians soil species towards its natural background dose |
| title | Investigation of dielectric constant variations for Malaysians
soil species towards its natural background dose |
| title_full | Investigation of dielectric constant variations for Malaysians
soil species towards its natural background dose |
| title_fullStr | Investigation of dielectric constant variations for Malaysians
soil species towards its natural background dose |
| title_full_unstemmed | Investigation of dielectric constant variations for Malaysians
soil species towards its natural background dose |
| title_short | Investigation of dielectric constant variations for Malaysians
soil species towards its natural background dose |
| title_sort | investigation of dielectric constant variations for malaysians soil species towards its natural background dose |
| topic | TD878-894 Special types of environment, Including soil pollution, air pollution, noise pollution |
| url | http://eprints.uthm.edu.my/6970/1/P9685_e9b5eb0dd9117f7cb1f620801d11e299.pdf |
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