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...

Full description

Saved in:

Bibliographic Details
Main Author:	Alias, Masitah
Format:	Thesis
Language:	English
Published:	2005
Subjects:	Agriculture Soil conservation and protection
Online Access:	https://ir.uitm.edu.my/id/eprint/101735/1/101735.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-uitm-ir.101735
record_format	uketd_dc
spelling	my-uitm-ir.1017352024-11-30T06:38:21Z Indexing low-level radioisotopes in Felda Jengka cultivated land / Masitah Alias 2005 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 https://ir.uitm.edu.my/id/eprint/101735/ https://ir.uitm.edu.my/id/eprint/101735/1/101735.pdf text en public masters Universiti Teknologi MARA (UiTM) Faculty of Applied Sciences
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
topic	Agriculture Agriculture Soil conservation and protection
spellingShingle	Agriculture Agriculture 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
qualification_level	Master's degree
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
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Applied Sciences
publishDate	2005
url	https://ir.uitm.edu.my/id/eprint/101735/1/101735.pdf
_version_	1818588011276795904

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

Similar Items