Geochemometrics of primordial radionuclides and their potential radiological risk in coastal sediments of Southeast Coast of India

Bharath, K. Manikanda; Natesan, Usha; Chandrasekaran, S.; Srinivasalu, S.; Abdelrahman, K.; Abu-Alam, T.; Abioui, Mohamed

doi:10.1016/j.jrras.2023.100525

Cited by 7 publications

(7 citation statements)

References 38 publications

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“…40 K in the present work with the similar works around the world. From this, the mean activity concentration of 226 Ra in the present work is lower compared with the results reported in East Coast of Tamil Nadu, Southeast Coast of India, Ghana, Egypt, Namibia, Bangladesh, Kerala, and North Chennai to Pondicherry (Tamil Nadu), (7,8,28,29,(31)(32)(33)(34) . Comparatively, the activity of 232 Th is higher than the existing reports in East Coast of Tamil Nadu, Port Said (Egypt), Yemen, Ghana, Egypt, North Sulawesi, Namibia, and North Chennai to Pondicherry (Tamil Nadu) (7,(26)(27)(28)(29)(30)(31)34) , but lower than Southeast Coast of India, Bangladesh, and Kerala (8,32,33) .…”

Section: Activity Concentration In Sediment Samplescontrasting

confidence: 83%

“…From this, the mean activity concentration of 226 Ra in the present work is lower compared with the results reported in East Coast of Tamil Nadu, Southeast Coast of India, Ghana, Egypt, Namibia, Bangladesh, Kerala, and North Chennai to Pondicherry (Tamil Nadu), (7,8,28,29,(31)(32)(33)(34) . Comparatively, the activity of 232 Th is higher than the existing reports in East Coast of Tamil Nadu, Port Said (Egypt), Yemen, Ghana, Egypt, North Sulawesi, Namibia, and North Chennai to Pondicherry (Tamil Nadu) (7,(26)(27)(28)(29)(30)(31)34) , but lower than Southeast Coast of India, Bangladesh, and Kerala (8,32,33) . The activity of 40 K is higher than the results of East Coast of Tamil Nadu, Southeast Coast of India, Port Said (Egypt), Ghana, Egypt, North Sulawesi, Namibia, Kerala (7,8,26,(28)(29)(30)(31)33) , while lower than Yemen, Bangladesh, and North Chennai to Pondicherry (Tamil Nadu) (27,32,34) .…”

Section: Activity Concentration In Sediment Samplescontrasting

confidence: 83%

“…Since significant contribution comes from natural sources, substantially, artificial radionuclides such as 137 Cs, 95 Zr, and 90 Sr, technologically produced by humans (technologically enhanced naturally occurring radioactive materials, TENORM) are attributed to the gamma radiation (6,7) . The spatial distribution sequences of radium and thorium and their posterities were influenced by physical, chemical, geo-chemical, and biological interactions, which ultimately depended on the processes involved in the formation and movement of soil and sediment, rocks, and higher altitudes (8,9) . Sediments play a crucial role in the transit and storage of potentially harmful radioactive elements in aquatic ecosystems, as they are the primary source and sink of radioactive substances and pollutants (8,10) .…”

Section: Introductionmentioning

confidence: 99%

“…The spatial distribution sequences of radium and thorium and their posterities were influenced by physical, chemical, geo-chemical, and biological interactions, which ultimately depended on the processes involved in the formation and movement of soil and sediment, rocks, and higher altitudes (8,9) . Sediments play a crucial role in the transit and storage of potentially harmful radioactive elements in aquatic ecosystems, as they are the primary source and sink of radioactive substances and pollutants (8,10) .…”

Section: Introductionmentioning

confidence: 99%

“…As well as the radionuclides, they can be transferred through the translocation of soil to plants and animals and, thereupon, to humans (7,11) . In India, many radioactivity measurements have been carried out on sediments from coastal regions like Kerala, Tamil Nadu, and Kalpakkam because of the deposition of zircon, monazite, and rare-earth-bearing minerals (8) .…”

Section: Introductionmentioning

confidence: 99%

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Gamma Ray Spectroscopy Analysis of Sediments of Coastal Areas in Ennore, Tamil Nadu

Rajendiran,

Karthikayini,

Veeramuthu

et al. 2024

IJST

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Objectives: This research focuses on the determination of the natural radionuclides radium, thorium, and potassium in the twenty-six sediment samples collected at the sea, beach, and creek regions of Ennore Port. Methods: The activity concentrations of 226Ra, 232Th, and 40K were determined using gamma ray spectrometry with a high-purity germanium (HPGe) detector. Findings: The average activity concentrations of 226Ra, 232Th, and 40K were in the descending order of 40K (397.58 Bq kg-1) > 232Th (65.83 Bq kg-1) > 226Ra (18.28 Bq kg-1). The estimated average values of radiological parameters such as radium equivalent activity (143.04 Bq kg-1), absorbed dose rate (64.91 nGy h-1), annual effective dose equivalent (0.32 mSv y-1), and external hazard index (0.39) were lower than the respective world average values, reported by United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR, 2000). Moreover, the representative level index and annual gonadal dose equivalent were slightly higher than the world average value. Hence, this research proved that the study area is radiologically safe for humans and the environment. Novelty: A location and sample collection-based novelty is approached to carried out the work. Sea sediments were also collected along with samples from creek and beach regions in order to examine the dispersion of natural radionuclides from land to marine environments. The samples from the beach and creek regions were collected using a Peterson grab sampler. Especially in the sea region, the samples were collected using a Van Veen grab sampler at a depth of 4 m and a distance of 10 m parallel to the shoreline. Keywords: Natural radioactivity, Sediment, Ennore, Gamma ray spectrometry, HPGe detector, Radiological parameters

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