The measurement of gamma-emitting radionuclides in beach sand cores of coastal regions of Ramsar, Iran using HPGe detectors

Tari, Marziyeh; Zarandi, Sayyed Ali Moussavi; Mohammadi, Kheirollah; Zare, Mohammad Reza

doi:10.1016/j.marpolbul.2013.06.030

Cited by 32 publications

(8 citation statements)

References 45 publications

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“…To address these problems, assessment of radioactivity concentration in the marine environment is essential. Natural radioactivity measurements in coastal sediments in different parts of the world were reported by many authors (Akram et al, 2006;Mohanty et al, 2004;Alatise et al, 2008;Amekudzie et al, 2011;Tari et al, 2013).…”

Section: Introductionmentioning

confidence: 82%

Assessments of radioactivity concentration of natural radionuclides and radiological hazard indices in sediment samples from the East coast of Tamilnadu, India with statistical approach

Ravisankar¹,

Chandramohan

Chandrasekaran³

et al. 2015

Marine Pollution Bulletin

162

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Section: Introductionmentioning

confidence: 82%

Assessments of radioactivity concentration of natural radionuclides and radiological hazard indices in sediment samples from the East coast of Tamilnadu, India with statistical approach

Ravisankar¹,

Chandramohan

Chandrasekaran³

et al. 2015

Marine Pollution Bulletin

162

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“…Approximately 420 g of each meshed surface soil and beach sand sample was removed to a PVC (8.2 cm × 7.5 cm) cylindrical container. The container was sealed hermetically and externally using cellophane tape and left for about four weeks to ensure equilibrium between 226 Ra and its daughters and 228 Ra and its daughters [15].…”

Section: Surface Soil and Beach Sand Sample Collection And Preparationmentioning

confidence: 99%

Measurement of radionuclides in surface soil and beach sand samples from Rayong Province (Thailand) and the evaluation of excess lifetime cancer risk

Kessaratikoon¹,

Boonkrongcheepa²,

Polthum³

2021

ScienceAsia

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Specific activities of natural ( 40 K, 226 Ra, and 232 Th) and anthropogenic ( 137 Cs) radionuclides in 230 surface soil and beach sand samples collected from the densely populated areas of industrial activities in Rayong Province, Thailand, were analyzed. Experimental results were obtained using a high-purity germanium detector and gamma spectrometric analysis system. The frequency distributions of the four radionuclides were investigated and calculated as suitable medium values of all distributions. According to asymmetrical distribution, medium values of the specific activities of all required radionuclides should be median values. Furthermore, the median values of the three natural radionuclides were also used to evaluate absorbed dose rates in the air (D), radium equivalent (Ra eq ), external hazard index (H ex ), annual effective dose rate (AED out ), and excess lifetime cancer risk (ELCR) in the studied areas. The results were compared with data obtained from the annual report of Thailand's Office of Atoms for Peace, the global radioactivity measurements, and the evaluations and recommended values proposed by the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). It was found that most of the results were significantly lower than the recommended values of UNSCEAR except for the median value of specific activity of 226 Ra. Moreover, the radioactive contour map for the investigated areas was constructed.

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“…And the natural radioactivity of marine sand depends on the sediment formation and transport processes that were involved; chemical and biochemical interactions influence the distribution patterns of uranium, thorium and their decay products. However, many studies had been carried out on the radionuclide concentrations in sand beaches around the world, such as India [8] [9], Brazil [10] [11], Thailand [12], Egypt [13], Iran [14], and China (Xiamen, [15]) using the gamma ray spectrometry. In spite of the high number of works carried out around the world on the beach sands, there is a lack of studies about radionuclides of offshore sands.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Natural Radioactivity in Marine Sand Deposits from Offshore China

Li¹,

Hu²,

Zhao³

et al. 2017

OJMS

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Natural radioactivity is very important for the assessment of the marine sand property and usability. By using gamma spectrometry, the concentration of the natural radionuclides 226 Ra, 232Th and 40 K have been measured in marine sand deposits from Liaodong Bay (LDB), North Yellow Sea (NYS), Zhoushan area (ZS), Taiwan Shoal (TS) and Pearl River Mouth (PR), offshore China, which are potential marine sand mining areas. The radiation activity equivalent (Raeq), indoor gamma absorbed dose rate (DR), annual effective dose (HR), alpha index (Ia), gamma index (Ig), external radiation hazard index (Hex), internal radiation hazard index (Hin), representative level index (RLI), excess lifetime cancer risk (ELCR) and annual gonadal dose equivalent (AGDE) associated with the natural radionuclides are calculated to assess the radiation hazard of the natural radioactivity in the marine sands offshore China. From the analysis, it is found that these marine sands are safe for the constructions. The Pearson correlation coefficient reveals that the 226 Ra distribution in the marine sands offshore China is controlled by the variation of the 40 K concentration. Principal component analysis (PCA) yields a two-component representation of the entire data from the marine sands, wherein 98.22% of the total variance is explained. Our results provide good baseline data to expand the database of radioactivity of building materials in China and all over the world.

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The measurement of gamma-emitting radionuclides in beach sand cores of coastal regions of Ramsar, Iran using HPGe detectors

Cited by 32 publications

References 45 publications

Assessments of radioactivity concentration of natural radionuclides and radiological hazard indices in sediment samples from the East coast of Tamilnadu, India with statistical approach

Assessments of radioactivity concentration of natural radionuclides and radiological hazard indices in sediment samples from the East coast of Tamilnadu, India with statistical approach

Measurement of radionuclides in surface soil and beach sand samples from Rayong Province (Thailand) and the evaluation of excess lifetime cancer risk

Evaluation of Natural Radioactivity in Marine Sand Deposits from Offshore China

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