Radon and thoron study in areas of elevated background radiation in Palong, Segamat, Johor

The study aims to present data on indoor and outdoor radon and thoron concentrations in areas of elevated background radiation in Palong, Segamat, Johor. The chosen area has the highest gamma background radiation in Johor. The measurements of equilibrium equivalent concentration of radon (EECRn) and...

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Main Author:	Abd. Wahab, Nur Amira
Format:	Thesis
Language:	English
Published:	2015
Subjects:	QC Physics
Online Access:	http://eprints.utm.my/id/eprint/54006/1/NurAmiraAbdWahabMFS2015.pdf
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spelling	my-utm-ep.540062020-10-14T08:47:33Z Radon and thoron study in areas of elevated background radiation in Palong, Segamat, Johor 2015-04 Abd. Wahab, Nur Amira QC Physics The study aims to present data on indoor and outdoor radon and thoron concentrations in areas of elevated background radiation in Palong, Segamat, Johor. The chosen area has the highest gamma background radiation in Johor. The measurements of equilibrium equivalent concentration of radon (EECRn) and thoron (EECTn) were carried out for periods of 12 hours from 7.00 am until 7.00 pm by using electronic radon dosimeter; DOSEman PRO. Terrestrial gamma radiations were measured and soil samples were collected in the area where radon and thoron monitoring took place. The results of radon and thoron concentrations were divided into three time intervals; morning (7.00 am – 11.00 am), afternoon (11.00 am – 3.00 pm) and evening (3.00 pm – 7.00 pm). The values of indoor and outdoor EECRn varied from 2.6 to 69.3 Bq m-3 and 0.4 to 48.2 Bq m-3 respectively. While for thoron, the values varied from 0 to 20.6 Bq m-3 and 0 to 27.5 Bq m-3 respectively. Indoor and outdoor gamma dose rates varied from 169 to 397 nGy h-1 and 81 to 1007 nGy h-1 respectively. The concentrations of uranium, thorium and potassium in soils were 20.7 to 967.3 Bq kg-1, 24.9 to 1003.8 Bq kg-1 and 4.5 to 4073.2 Bq kg-1 respectively. The populations in this area received annual effective dose between 0.54 mSv yr-1 to 7.52 mSv yr-1 due to terrestrial gamma and radon/ thoron exposure. The radiation dose is still within the normal range of 1-10 mSv yr-1 as stated by International Commission on Radiological Protection (ICRP). 2015-04 Thesis http://eprints.utm.my/id/eprint/54006/ http://eprints.utm.my/id/eprint/54006/1/NurAmiraAbdWahabMFS2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:86582 masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QC Physics
spellingShingle	QC Physics Abd. Wahab, Nur Amira Radon and thoron study in areas of elevated background radiation in Palong, Segamat, Johor
description	The study aims to present data on indoor and outdoor radon and thoron concentrations in areas of elevated background radiation in Palong, Segamat, Johor. The chosen area has the highest gamma background radiation in Johor. The measurements of equilibrium equivalent concentration of radon (EECRn) and thoron (EECTn) were carried out for periods of 12 hours from 7.00 am until 7.00 pm by using electronic radon dosimeter; DOSEman PRO. Terrestrial gamma radiations were measured and soil samples were collected in the area where radon and thoron monitoring took place. The results of radon and thoron concentrations were divided into three time intervals; morning (7.00 am – 11.00 am), afternoon (11.00 am – 3.00 pm) and evening (3.00 pm – 7.00 pm). The values of indoor and outdoor EECRn varied from 2.6 to 69.3 Bq m-3 and 0.4 to 48.2 Bq m-3 respectively. While for thoron, the values varied from 0 to 20.6 Bq m-3 and 0 to 27.5 Bq m-3 respectively. Indoor and outdoor gamma dose rates varied from 169 to 397 nGy h-1 and 81 to 1007 nGy h-1 respectively. The concentrations of uranium, thorium and potassium in soils were 20.7 to 967.3 Bq kg-1, 24.9 to 1003.8 Bq kg-1 and 4.5 to 4073.2 Bq kg-1 respectively. The populations in this area received annual effective dose between 0.54 mSv yr-1 to 7.52 mSv yr-1 due to terrestrial gamma and radon/ thoron exposure. The radiation dose is still within the normal range of 1-10 mSv yr-1 as stated by International Commission on Radiological Protection (ICRP).
format	Thesis
qualification_level	Master's degree
author	Abd. Wahab, Nur Amira
author_facet	Abd. Wahab, Nur Amira
author_sort	Abd. Wahab, Nur Amira
title	Radon and thoron study in areas of elevated background radiation in Palong, Segamat, Johor
title_short	Radon and thoron study in areas of elevated background radiation in Palong, Segamat, Johor
title_full	Radon and thoron study in areas of elevated background radiation in Palong, Segamat, Johor
title_fullStr	Radon and thoron study in areas of elevated background radiation in Palong, Segamat, Johor
title_full_unstemmed	Radon and thoron study in areas of elevated background radiation in Palong, Segamat, Johor
title_sort	radon and thoron study in areas of elevated background radiation in palong, segamat, johor
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2015
url	http://eprints.utm.my/id/eprint/54006/1/NurAmiraAbdWahabMFS2015.pdf
_version_	1747817672083505152

Radon and thoron study in areas of elevated background radiation in Palong, Segamat, Johor

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