Determination of radium-226 activity concentration in water using liquid scintillation counting (LSC) technique / Siti Shahrina Agos

Determination of radium-226 activity concentration in water using liquid scintillation counting (LSC) technique / Siti Shahrina Agos

The measurement of radioactivity in water allows the determination of population exposure to radiation by the habitual consumption of water. The occurrence of radionuclide in water causes human internal exposure, caused by the decay of radionuclide taken into the body through ingestion and inhalatio...

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Main Author: Agos, Siti Shahrina
Format: Student Project
Language:English
Published: Faculty of Applied Sciences 2010
Subjects:
Analytical chemistry
Online Access:http://ir.uitm.edu.my/id/eprint/23047/
http://ir.uitm.edu.my/id/eprint/23047/1/PPb_SITI%20SHAHRINA%20AGOS%20AS%2010_5.pdf
id uitm-23047
recordtype eprints
spelling uitm-230472019-02-27T09:09:00Z http://ir.uitm.edu.my/id/eprint/23047/ Determination of radium-226 activity concentration in water using liquid scintillation counting (LSC) technique / Siti Shahrina Agos Agos, Siti Shahrina Analytical chemistry The measurement of radioactivity in water allows the determination of population exposure to radiation by the habitual consumption of water. The occurrence of radionuclide in water causes human internal exposure, caused by the decay of radionuclide taken into the body through ingestion and inhalation. The purposes of this study were to determine the activity concentration of radium-226 in water and to compare the value with the allowable limit. Twelve samples were collected along Kelantan River at Kuala Krai and Kota Bahru district. The activity of radium-226 was determined indirectly from its daughter using Liquid Scintillation Counting for filtered and unfiltered samples. From the results, water samples from Sok River (SI), Lebir River (S8), and Sabah Hill (S12), gave high value of radon-222 activity; 1.654±0.85 Bq/L, 1.655±0.24 Bq/L and 1.438±0.49 Bq/L respectively. For radium-226 activity, high value was recorded in water sample from Sok River (SI), Lebir River (S8), and Sabah Hill (S12) with activity of 0.302±0.16 Bq/L, 0.290±0.04 Bq/L and 0.251±0.09 Bq/L respectively. Low radium-226 activity was recorded in sample from Sok River estuary (S5) with value of 0.107±0.03 Bq/L. For the other samples, the activity ranged from 0.142±0.08 to 0.190±0.01 Bq/L. Pearson correlation analysis showed a weak negative correlation between the radium-226 activity with pH and total dissolved solid of the water. Medium correlation showed in the activity with temperature and dissolved oxygen. The concentrations of radium-226 for most of the samples were above than the allowable limit regulated by United State Environmental Protection Agency. Several factors that contributed to the radioactivity are the geographical features and agricultural activity along the river. Further study need to be conducted to understand the routes and mechanisms of this radionuclide entering the human body. Faculty of Applied Sciences 2010 Student Project NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/23047/1/PPb_SITI%20SHAHRINA%20AGOS%20AS%2010_5.pdf Agos, Siti Shahrina (2010) Determination of radium-226 activity concentration in water using liquid scintillation counting (LSC) technique / Siti Shahrina Agos. [Student Project] (Unpublished)
repository_type Digital Repository
institution_category Local University
institution Universiti Teknologi MARA
building UiTM Institutional Repository
collection Online Access
language English
topic Analytical chemistry
spellingShingle Analytical chemistry
Agos, Siti Shahrina
Determination of radium-226 activity concentration in water using liquid scintillation counting (LSC) technique / Siti Shahrina Agos
description The measurement of radioactivity in water allows the determination of population exposure to radiation by the habitual consumption of water. The occurrence of radionuclide in water causes human internal exposure, caused by the decay of radionuclide taken into the body through ingestion and inhalation. The purposes of this study were to determine the activity concentration of radium-226 in water and to compare the value with the allowable limit. Twelve samples were collected along Kelantan River at Kuala Krai and Kota Bahru district. The activity of radium-226 was determined indirectly from its daughter using Liquid Scintillation Counting for filtered and unfiltered samples. From the results, water samples from Sok River (SI), Lebir River (S8), and Sabah Hill (S12), gave high value of radon-222 activity; 1.654±0.85 Bq/L, 1.655±0.24 Bq/L and 1.438±0.49 Bq/L respectively. For radium-226 activity, high value was recorded in water sample from Sok River (SI), Lebir River (S8), and Sabah Hill (S12) with activity of 0.302±0.16 Bq/L, 0.290±0.04 Bq/L and 0.251±0.09 Bq/L respectively. Low radium-226 activity was recorded in sample from Sok River estuary (S5) with value of 0.107±0.03 Bq/L. For the other samples, the activity ranged from 0.142±0.08 to 0.190±0.01 Bq/L. Pearson correlation analysis showed a weak negative correlation between the radium-226 activity with pH and total dissolved solid of the water. Medium correlation showed in the activity with temperature and dissolved oxygen. The concentrations of radium-226 for most of the samples were above than the allowable limit regulated by United State Environmental Protection Agency. Several factors that contributed to the radioactivity are the geographical features and agricultural activity along the river. Further study need to be conducted to understand the routes and mechanisms of this radionuclide entering the human body.
format Student Project
author Agos, Siti Shahrina
author_facet Agos, Siti Shahrina
author_sort Agos, Siti Shahrina
title Determination of radium-226 activity concentration in water using liquid scintillation counting (LSC) technique / Siti Shahrina Agos
title_short Determination of radium-226 activity concentration in water using liquid scintillation counting (LSC) technique / Siti Shahrina Agos
title_full Determination of radium-226 activity concentration in water using liquid scintillation counting (LSC) technique / Siti Shahrina Agos
title_fullStr Determination of radium-226 activity concentration in water using liquid scintillation counting (LSC) technique / Siti Shahrina Agos
title_full_unstemmed Determination of radium-226 activity concentration in water using liquid scintillation counting (LSC) technique / Siti Shahrina Agos
title_sort determination of radium-226 activity concentration in water using liquid scintillation counting (lsc) technique / siti shahrina agos
publisher Faculty of Applied Sciences
publishDate 2010
url http://ir.uitm.edu.my/id/eprint/23047/
http://ir.uitm.edu.my/id/eprint/23047/1/PPb_SITI%20SHAHRINA%20AGOS%20AS%2010_5.pdf
first_indexed 2023-09-18T23:09:58Z
last_indexed 2023-09-18T23:09:58Z
_version_ 1777418736555261952

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