Development of method for simultaneous measurement of gross alpha and beta in aqueous environmental samples / Masitah Alias

Measurement of gross alpha and beta in aqeous environmental sample using standard method is a very lengthy, tedious and time consuming process. Alternatively, liquid scintillation counting (LSC) offers a better solution, since the latest model of LSC offer simultaneous counting of gross alpha and be...

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Main Author:	Alias, Masitah
Format:	Thesis
Language:	English
Published:	2014
Online Access:	https://ir.uitm.edu.my/id/eprint/16417/1/ABS_MASITAH%20ALIAS%20TDRA%20VOL%205%20IGS_14.pdf
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id	my-uitm-ir.16417
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spelling	my-uitm-ir.164172022-03-29T08:52:59Z Development of method for simultaneous measurement of gross alpha and beta in aqueous environmental samples / Masitah Alias 2014-02 Alias, Masitah Measurement of gross alpha and beta in aqeous environmental sample using standard method is a very lengthy, tedious and time consuming process. Alternatively, liquid scintillation counting (LSC) offers a better solution, since the latest model of LSC offer simultaneous counting of gross alpha and beta. The success of LSC technique will depend on two factors; first is the proper setting of the LSC window and its pulse shape analyzer (PSA) concluded in the new protocol for alpha beta simultaneous counting. Secondly, the successful incorporation of the water phase which contains the radionuclides into the organic solvent phase using proper choice of emulsifier which produce a clear stable solution with reasonably high counting rate and figure of merit. This new developed method was validated to ensure that it gave accurate and precise results and the method was verified. Later, the method was applied for measuring various types of environmental water samples including river water, lake water, hot spring water, sea water, mineral and drinking water. The activity concentrations of gross alpha and gross beta in various types of water were above the limit of National Water Quality Standard except for bottled mineral and drinking water. Another aspect of this study was to construct the gross alpha and gross beta spectra using Microsoft excel in order to identify the radionuclides present in the samples through their spectrum. Therefore the result was not only based on the count rate but also the spectrum of the samples. Additional information from the spectrum will help researcher to plan for further analysis if needed. 2014-02 Thesis https://ir.uitm.edu.my/id/eprint/16417/ https://ir.uitm.edu.my/id/eprint/16417/1/ABS_MASITAH%20ALIAS%20TDRA%20VOL%205%20IGS_14.pdf text en public phd doctoral Universiti Teknologi MARA Faculty of Applied Sciences
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
description	Measurement of gross alpha and beta in aqeous environmental sample using standard method is a very lengthy, tedious and time consuming process. Alternatively, liquid scintillation counting (LSC) offers a better solution, since the latest model of LSC offer simultaneous counting of gross alpha and beta. The success of LSC technique will depend on two factors; first is the proper setting of the LSC window and its pulse shape analyzer (PSA) concluded in the new protocol for alpha beta simultaneous counting. Secondly, the successful incorporation of the water phase which contains the radionuclides into the organic solvent phase using proper choice of emulsifier which produce a clear stable solution with reasonably high counting rate and figure of merit. This new developed method was validated to ensure that it gave accurate and precise results and the method was verified. Later, the method was applied for measuring various types of environmental water samples including river water, lake water, hot spring water, sea water, mineral and drinking water. The activity concentrations of gross alpha and gross beta in various types of water were above the limit of National Water Quality Standard except for bottled mineral and drinking water. Another aspect of this study was to construct the gross alpha and gross beta spectra using Microsoft excel in order to identify the radionuclides present in the samples through their spectrum. Therefore the result was not only based on the count rate but also the spectrum of the samples. Additional information from the spectrum will help researcher to plan for further analysis if needed.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Alias, Masitah
spellingShingle	Alias, Masitah Development of method for simultaneous measurement of gross alpha and beta in aqueous environmental samples / Masitah Alias
author_facet	Alias, Masitah
author_sort	Alias, Masitah
title	Development of method for simultaneous measurement of gross alpha and beta in aqueous environmental samples / Masitah Alias
title_short	Development of method for simultaneous measurement of gross alpha and beta in aqueous environmental samples / Masitah Alias
title_full	Development of method for simultaneous measurement of gross alpha and beta in aqueous environmental samples / Masitah Alias
title_fullStr	Development of method for simultaneous measurement of gross alpha and beta in aqueous environmental samples / Masitah Alias
title_full_unstemmed	Development of method for simultaneous measurement of gross alpha and beta in aqueous environmental samples / Masitah Alias
title_sort	development of method for simultaneous measurement of gross alpha and beta in aqueous environmental samples / masitah alias
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Applied Sciences
publishDate	2014
url	https://ir.uitm.edu.my/id/eprint/16417/1/ABS_MASITAH%20ALIAS%20TDRA%20VOL%205%20IGS_14.pdf
_version_	1783733526451978240

Development of method for simultaneous measurement of gross alpha and beta in aqueous environmental samples / Masitah Alias

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