Indexing low-level radioisotopes in Felda Jengka cultivated land / Masitah Alias

Naturally occurring radionuclides such as 40K, 226Ra and 228Ra which emit gamma radiation through their decay process could reach the human in vicinity. The amount of radioactivity concentration of these radionuclides is the important factor in assessing whether it harmful or vice versa. In this stu...

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Main Author: Alias, Masitah
Format: Thesis
Language:English
Published: 2005
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Online Access:https://ir.uitm.edu.my/id/eprint/101735/1/101735.pdf
https://ir.uitm.edu.my/id/eprint/101735/
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spelling my.uitm.ir.1017352024-11-30T06:38:21Z https://ir.uitm.edu.my/id/eprint/101735/ Indexing low-level radioisotopes in Felda Jengka cultivated land / Masitah Alias Alias, Masitah Agriculture Soils. Soil science. Including soil surveys, soil chemistry, soil structure, soil-plant relationships Soil conservation and protection Naturally occurring radionuclides such as 40K, 226Ra and 228Ra which emit gamma radiation through their decay process could reach the human in vicinity. The amount of radioactivity concentration of these radionuclides is the important factor in assessing whether it harmful or vice versa. In this study, the oil palm plantation in Jengka 15, Maran District, Pahang Darul Makmur was chosen as a study area, since geographically it has various sections such as slope, flat land and catchments area. The samples were collected using hand auger at specific locations determined by using global positioning system. The surface dose measurement were done in-situ using dose rate meter, and the radioactivity concentration levels were done by counting the soil samples using gamma spectrometer with HPGe detector in the laboratory. The concentrations of uranium, thorium and potassium were determined using neutron activation analysis technique. It is found that the mean radioactivity concentrations for 40K are 70.7 ± 12.4 Bq/kg and 55.5 ± 10.9 Bq/kg, 50.5 ± 11.2 Bq/kg and 61.9 ± 12.8 Bq/kg, and 243.0 ± 29 Bq/kg for flats 1 and 2, slopes 1 and 2 and catchments area respectively. The mean radioactivity concentrations for 226Ra are 16.6 ± 0.8 Bq/kg and 17.9 ± 0.8 Bq/kg, 20.1 ± 1.4 Bq/kg and 18.8 ± 1.7 Bq/kg and 22.1 ± 1.1 Bq/kg for flats 1 and 2, slopes 1 and 2 and catchments area respectively. The mean radioactivity concentrations for 228Ra are 22.4 ± 2.5 Bq/kg and 26.9 ± 2.6 Bq/kg, 27.1 ± 3.5 Bq/kg and 24.5 ± 3.1 Bq/kg, and 36.6 ± 13.2 Bg/kg for flats 1 and 2, slopes 1 and 2 and catchments respectively. The mean concentrations of uranium are 3.0 ± 0.2 µg/g and 2.0 ± 0.2 µg/g for flats area, 2.0 ± 0.2 µg/g for slopes area and 3.1 ± 0.2 µg/g for catchments area. The mean concentrations of thorium are 7.7 ± 3 µg/g and 6.9 ± 2 µg/g for flats area, 3.9 ± 1µg/g and 4.3 ± 2 µg/g for slopes area, and 11.4 ± 4 µg/g for catchments area. The mean concentrations of potassium are 1763 ± 14 µg/g and 2148 ± 13 µg/g for flats area, 1484 ± 13 µg/g and 1657 ± 15 µg/g for slopes area, and 6200 ± 13 µg/g for catchments area. 2005 Thesis NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/101735/1/101735.pdf Indexing low-level radioisotopes in Felda Jengka cultivated land / Masitah Alias. (2005) Masters thesis, thesis, Universiti Teknologi MARA (UiTM). <http://terminalib.uitm.edu.my/101735.pdf>
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic Agriculture
Soils. Soil science. Including soil surveys, soil chemistry, soil structure, soil-plant relationships
Soil conservation and protection
spellingShingle Agriculture
Soils. Soil science. Including soil surveys, soil chemistry, soil structure, soil-plant relationships
Soil conservation and protection
Alias, Masitah
Indexing low-level radioisotopes in Felda Jengka cultivated land / Masitah Alias
description Naturally occurring radionuclides such as 40K, 226Ra and 228Ra which emit gamma radiation through their decay process could reach the human in vicinity. The amount of radioactivity concentration of these radionuclides is the important factor in assessing whether it harmful or vice versa. In this study, the oil palm plantation in Jengka 15, Maran District, Pahang Darul Makmur was chosen as a study area, since geographically it has various sections such as slope, flat land and catchments area. The samples were collected using hand auger at specific locations determined by using global positioning system. The surface dose measurement were done in-situ using dose rate meter, and the radioactivity concentration levels were done by counting the soil samples using gamma spectrometer with HPGe detector in the laboratory. The concentrations of uranium, thorium and potassium were determined using neutron activation analysis technique. It is found that the mean radioactivity concentrations for 40K are 70.7 ± 12.4 Bq/kg and 55.5 ± 10.9 Bq/kg, 50.5 ± 11.2 Bq/kg and 61.9 ± 12.8 Bq/kg, and 243.0 ± 29 Bq/kg for flats 1 and 2, slopes 1 and 2 and catchments area respectively. The mean radioactivity concentrations for 226Ra are 16.6 ± 0.8 Bq/kg and 17.9 ± 0.8 Bq/kg, 20.1 ± 1.4 Bq/kg and 18.8 ± 1.7 Bq/kg and 22.1 ± 1.1 Bq/kg for flats 1 and 2, slopes 1 and 2 and catchments area respectively. The mean radioactivity concentrations for 228Ra are 22.4 ± 2.5 Bq/kg and 26.9 ± 2.6 Bq/kg, 27.1 ± 3.5 Bq/kg and 24.5 ± 3.1 Bq/kg, and 36.6 ± 13.2 Bg/kg for flats 1 and 2, slopes 1 and 2 and catchments respectively. The mean concentrations of uranium are 3.0 ± 0.2 µg/g and 2.0 ± 0.2 µg/g for flats area, 2.0 ± 0.2 µg/g for slopes area and 3.1 ± 0.2 µg/g for catchments area. The mean concentrations of thorium are 7.7 ± 3 µg/g and 6.9 ± 2 µg/g for flats area, 3.9 ± 1µg/g and 4.3 ± 2 µg/g for slopes area, and 11.4 ± 4 µg/g for catchments area. The mean concentrations of potassium are 1763 ± 14 µg/g and 2148 ± 13 µg/g for flats area, 1484 ± 13 µg/g and 1657 ± 15 µg/g for slopes area, and 6200 ± 13 µg/g for catchments area.
format Thesis
author Alias, Masitah
author_facet Alias, Masitah
author_sort Alias, Masitah
title Indexing low-level radioisotopes in Felda Jengka cultivated land / Masitah Alias
title_short Indexing low-level radioisotopes in Felda Jengka cultivated land / Masitah Alias
title_full Indexing low-level radioisotopes in Felda Jengka cultivated land / Masitah Alias
title_fullStr Indexing low-level radioisotopes in Felda Jengka cultivated land / Masitah Alias
title_full_unstemmed Indexing low-level radioisotopes in Felda Jengka cultivated land / Masitah Alias
title_sort indexing low-level radioisotopes in felda jengka cultivated land / masitah alias
publishDate 2005
url https://ir.uitm.edu.my/id/eprint/101735/1/101735.pdf
https://ir.uitm.edu.my/id/eprint/101735/
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score 13.23648