DOI: 10.1016/j.marpolbul.2017.12.055
Scopus记录号: 2-s2.0-85039790772
论文题名: Elevated concentrations of naturally occurring radionuclides in heavy mineral-rich beach sands of Langkawi Island, Malaysia
作者: Khandaker M.U. ; Asaduzzaman K. ; Sulaiman A.F.B. ; Bradley D.A. ; Isinkaye M.O.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2018
卷: 127 起始页码: 654
结束页码: 663
语种: 英语
英文关键词: Beach sand
; Gamma ray spectrometry
; Natural radioactivity
; Radiological hazard parameters
; Statistical analysis
Scopus关键词: Beaches
; Electronics industry
; Gamma ray spectrometers
; Gamma rays
; Minerals
; Nuclear fuels
; Radiation
; Radioactivity
; Radioisotopes
; Radiometry
; Spectrometry
; Spectroscopy
; Statistical methods
; Activity concentration
; Beach sand
; Elevated concentrations
; Gamma ray spectrometry
; Mean activity concentrations
; Natural radioactivity
; Naturally-occurring radionuclides
; Radiological hazard
; Sand
; mineral
; potassium 40
; radioisotope
; radium 226
; thorium 232
; concentration (composition)
; gamma ray spectrometry
; heavy mineral
; radioactivity
; radionuclide
; sand
; statistical analysis
; Article
; cancer risk
; cluster analysis
; correlation analysis
; gamma radiation
; gamma spectrometry
; Malaysia
; natural radioactivity
; principal component analysis
; radiation hazard
; sand
; Kedah
; Langkawi
; Malaysia
; West Malaysia
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Study is made of the radioactivity in the beach sands of Langkawi island, a well-known tourist destination. Investigation is made of the relative presence of the naturally occurring radionuclide 40K and the natural-series indicator radionuclides 226Ra and 232Th, the gamma radiation exposure also being estimated. Sample quantities of black and white sand were collected for gamma ray spectrometry, yielding activity concentration in black sands of 226Ra, 232Th and 40K from 451 ± 9 to 2411 ± 65 Bq kg− 1 (mean of 1478 Bq kg− 1); 232 ± 4 to 1272 ± 35 Bq kg− 1 (mean of 718 Bq kg− 1) and 61 ± 6 to 136 ± 7 Bq kg− 1 (mean of 103 Bq kg− 1) respectively. Conversely, in white sands the respective values for 226Ra and 232Th were appreciably lower, at 8.3 ± 0.5 to 13.7 ± 1.4 Bq kg− 1 (mean of 9.8 Bq kg− 1) and 4.5 ± 0.7 to 9.4 ± 1.0 Bq kg− 1 (mean of 5.9 Bq kg− 1); 40K activities differed insubstantially from that in black sands, at 85 ± 4 to 133 ± 7 Bq kg− 1 with a mean of 102 Bq kg− 1. The mean activity concentrations of 226Ra and 232Th in black sands are comparable with that of high background areas elsewhere in the world. The heavy minerals content gives rise to elevated 226Ra and 232Th activity concentrations in all of black sand samples. Evaluation of the various radiological risk parameters points to values which in some cases could be in excess of recommendations providing for safe living and working. Statistical analysis examines correlations between the origins of the radionuclides, also identifying and classifying the radiological parameters. Present results may help to form an interest in rare-earth resources for the electronics industry, power generation and the viability of nuclear fuels cycle resources. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/88496
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
There are no files associated with this item.
作者单位: Center for Radiation Sciences, School of Healthcare and Medical Sciences, Sunway University, Bandar Sunway, Selangor, Malaysia; Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia; Institute of Nuclear Science and Technology, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh; Department of Physics, University of Surrey, Guildford, Surrey, United Kingdom; Department of Physics, Faculty of Science, Ekiti State University, Ado Ekiti, Nigeria
Recommended Citation:
Khandaker M.U.,Asaduzzaman K.,Sulaiman A.F.B.,et al. Elevated concentrations of naturally occurring radionuclides in heavy mineral-rich beach sands of Langkawi Island, Malaysia[J]. Marine Pollution Bulletin,2018-01-01,127