Multivariate statistical analysis of radiological data of building materials used in Tiruvannamalai, Tamilnadu, India

Ravisankar, R.; Vanasundari, K.; Suganya, M.; Raghu, Y.; Rajalakshmi, A.; Chandrasekaran, A.; Sivakumar, S.; Chandramohan, J.; Vijayagopal, P; Venkatraman, B.

doi:10.1016/j.apradiso.2013.12.005

Cited by 96 publications

(54 citation statements)

References 49 publications

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“…Negative kurtosis indicates a relatively flat distribution. Higher kurtosis means that more of the variance is the result of infrequent extreme deviations, as opposed to frequent modestly sized deviations [2]. In our study, the …”

Section: Radionuclide Activity Concentrationsmentioning

confidence: 68%

“…Thus, the activity concentration index should be used only as a screening tool for identifying materials that might be of concern when used as construction materials; although materials with I γ > 6 should be avoided, these values correspond to dose rates higher than 1 mSv y -1 , which is the highest dose rate value recommended for the population [2]. The gamma index I γ for the building materials varies between 0.16in clay (C3) and 0.32in brick (B3) with an average of 0.22, as presented in Table 1.…”

Section: Alpha Index (I α ) and Gamma Index (I γ )mentioning

confidence: 99%

“…To estimate the level of gamma radioactivity associated with different concentrations of certain specific radionuclides, known as the representative level index [2], the formula is given as RLI = (A Ra /150) + (A Th /100) + (A K /1500) (2) where A Ra , A Th , and A K are the average activity concentrations of, Table 2. The calculated RLI varies from 0.32 to 0.63 with an average of 0.44.…”

Section: Representative Level Index (Rli)mentioning

confidence: 99%

“…Although building materials act as sources of radiation to the inhabitants in dwellings, they also shield against outdoor radiation. Knowing the level of the natural radioactivity in building materials is important to assess the associated radiological hazards to human health and to develop standards and guidelines for the use and management of these materials [2].…”

Section: Introductionmentioning

confidence: 99%

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Distribution of Natural Radionuclide and Radiation Hazards of Building Materials Used in Assiut, Egypt

Issa

Mostafa

2015

IJBSBT

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Section: Radionuclide Activity Concentrationsmentioning

confidence: 68%

Section: Alpha Index (I α ) and Gamma Index (I γ )mentioning

confidence: 99%

Section: Representative Level Index (Rli)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Distribution of Natural Radionuclide and Radiation Hazards of Building Materials Used in Assiut, Egypt

Issa

Mostafa

2015

IJBSBT

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“…A high positive correlation coefficient is observed between 232 Th and 226 Ra (Figure 10(a)), because the radium and thorium decay series occur together in nature [42]. In contrast, a very weak negative correlation coefficient was observed between these two nuclides and (Table 3).…”

Section: Multivariate Statistical Analysismentioning

confidence: 70%

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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Natural Radioactivity, Transfer Factor and Associated Radiological Risk in Commercially Cultivated Yam (Dioscorea Rotundata) in Northcentral Nigeria

Kolo

Olarinoye

Salihu

et al. 2022

Springer Proceedings in Physics

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Multivariate statistical analysis of radiological data of building materials used in Tiruvannamalai, Tamilnadu, India

Cited by 96 publications

References 49 publications

Distribution of Natural Radionuclide and Radiation Hazards of Building Materials Used in Assiut, Egypt

Distribution of Natural Radionuclide and Radiation Hazards of Building Materials Used in Assiut, Egypt

Evaluation of Natural Radioactivity in Marine Sand Deposits from Offshore China

Natural Radioactivity, Transfer Factor and Associated Radiological Risk in Commercially Cultivated Yam (Dioscorea Rotundata) in Northcentral Nigeria

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