Measurement of radon-222 and radium-226 in well water of Kelantan

The Environmental Protection Agency (EPA) of USA sets the Maximum Contamination Level (MCL) for 222Rn in drinking water to be 11.1000 Bq/l and for 226Ra to be 0.1100 Bq/l. This study was conducted to determine the levels of 222Rn and 226Ra in private well water in the state of Kelantan. A total of 2...

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Main Author:	Sidi Ahmad, Nurul Ashikin
Format:	Thesis
Language:	English
Published:	2013
Subjects:	Q Science (General)
Online Access:	http://eprints.utm.my/id/eprint/47932/25/NurulAshikinSidiAhmadMFS2013.pdf
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id	my-utm-ep.47932
record_format	uketd_dc
spelling	my-utm-ep.479322017-07-04T00:38:03Z Measurement of radon-222 and radium-226 in well water of Kelantan 2013-08 Sidi Ahmad, Nurul Ashikin Q Science (General) The Environmental Protection Agency (EPA) of USA sets the Maximum Contamination Level (MCL) for 222Rn in drinking water to be 11.1000 Bq/l and for 226Ra to be 0.1100 Bq/l. This study was conducted to determine the levels of 222Rn and 226Ra in private well water in the state of Kelantan. A total of 25 samples of well water were collected from various districts in the state. The levels of 222Rn and 226Ra dissolved in well water were measured using the liquid scintillation counting technique. 222Rn activity concentrations were found within the range of 0.0491 to 4.3127 Bq/l for both unfiltered and filtered samples. Meanwhile, activity concentration of 226Ra measured is between 0.0278 to 1.9670 Bq/l for both unfiltered and filtered samples, exceeding the MCL value. The annual effective doses due to the intake of natural radionuclide from well water for three different age groups were estimated based on the amount of water consumed. The average annual effective dose of 226Ra calculated for babies in the range of 0.12 to 1.79 µSv/y. The average annual effective dose of 226Ra for children was in the range of 0.11 to 0.34 µSv/y while, for the adults, it was in the range of 0.11 to 0.33 µSv/y for 226Ra. The annual effective dose intake for the babies was found to be higher than other groups but within the limit recommended by World Health Organization (WHO). The doses for the other two groups are below the recommended value. 2013-08 Thesis http://eprints.utm.my/id/eprint/47932/ http://eprints.utm.my/id/eprint/47932/25/NurulAshikinSidiAhmadMFS2013.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	Q Science (General)
spellingShingle	Q Science (General) Sidi Ahmad, Nurul Ashikin Measurement of radon-222 and radium-226 in well water of Kelantan
description	The Environmental Protection Agency (EPA) of USA sets the Maximum Contamination Level (MCL) for 222Rn in drinking water to be 11.1000 Bq/l and for 226Ra to be 0.1100 Bq/l. This study was conducted to determine the levels of 222Rn and 226Ra in private well water in the state of Kelantan. A total of 25 samples of well water were collected from various districts in the state. The levels of 222Rn and 226Ra dissolved in well water were measured using the liquid scintillation counting technique. 222Rn activity concentrations were found within the range of 0.0491 to 4.3127 Bq/l for both unfiltered and filtered samples. Meanwhile, activity concentration of 226Ra measured is between 0.0278 to 1.9670 Bq/l for both unfiltered and filtered samples, exceeding the MCL value. The annual effective doses due to the intake of natural radionuclide from well water for three different age groups were estimated based on the amount of water consumed. The average annual effective dose of 226Ra calculated for babies in the range of 0.12 to 1.79 µSv/y. The average annual effective dose of 226Ra for children was in the range of 0.11 to 0.34 µSv/y while, for the adults, it was in the range of 0.11 to 0.33 µSv/y for 226Ra. The annual effective dose intake for the babies was found to be higher than other groups but within the limit recommended by World Health Organization (WHO). The doses for the other two groups are below the recommended value.
format	Thesis
qualification_level	Master's degree
author	Sidi Ahmad, Nurul Ashikin
author_facet	Sidi Ahmad, Nurul Ashikin
author_sort	Sidi Ahmad, Nurul Ashikin
title	Measurement of radon-222 and radium-226 in well water of Kelantan
title_short	Measurement of radon-222 and radium-226 in well water of Kelantan
title_full	Measurement of radon-222 and radium-226 in well water of Kelantan
title_fullStr	Measurement of radon-222 and radium-226 in well water of Kelantan
title_full_unstemmed	Measurement of radon-222 and radium-226 in well water of Kelantan
title_sort	measurement of radon-222 and radium-226 in well water of kelantan
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2013
url	http://eprints.utm.my/id/eprint/47932/25/NurulAshikinSidiAhmadMFS2013.pdf
_version_	1747817266713460736

Measurement of radon-222 and radium-226 in well water of Kelantan

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