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Assessment of radiological health from ambient environment in the Muar district, Johor, Malaysia

Saleh, Muneer Aziz and Ramli, Ahmad Termizi and Alajerami, Yasser and Abu Mhareb, Mohammad Hasan and Aliyu, Abubakar Sadiq and Gabdo, Hamman Tukur and Garba, Nuraddeen Nasiru (2014) Assessment of radiological health from ambient environment in the Muar district, Johor, Malaysia. Radiation Physics and Chemistry, 103 . pp. 243-252. ISSN 0969-806X

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Official URL: http://dx.doi.org/10.1016/j.radphyschem.2014.05.05...


This study aims to obtain baseline data of environmental terrestrial radiation and to assess the corresponding health risk in the ambient environment in Muar District, Johor, Malaysia in view of the possible construction of nuclear power plant (NPP) in the future. The external gamma dose rate (GDR), measured using two portable survey meters, was 151nGyh-1. The activity concentrations of 232Th, 226Ra, and 40K were determined using hyper pure germanium (HPGe) detector. The activity concentrations were varied from 11±1 to 583±18Bqkg-1 for 232Th, 6±1 to 244±9Bqkg-1 for 226Ra, and 13±6 to 830±13Bqkg-1 for 40K. Various types of water samples were analyzed using a Low Background Alpha Beta Series 5 XLB instrument at Nuclear Malaysia (NM). Gross alpha activity concentrations in tap water varied from 3±1mBqL-1 to 34±6mBqL-1 and gross beta activity concentrations varied from 58±5mBqL-1 to 709±39mBqL-1 which were lower than the recommended value by Interim National Water Quality Standards for Malaysia (INWQS) and World Health Organization (WHO, 1993). The radiological health which are the annual effective dose equivalent, the collective effective dose, radium equivalent activity and external hazard index 0.220mSv, 0.526×102manSvy-1, 359Bqkg-1 and 0.969, respectively. The results.

Item Type:Article
Uncontrolled Keywords:gross alpha, gross beta, K-40, Ra-226, radioactivity, Th-232
Subjects:Q Science
ID Code:51948
Deposited By: Siti Nor Hashidah Zakaria
Deposited On:01 Feb 2016 11:51
Last Modified:30 Nov 2018 14:57

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