Determination of natural radioactivity in beach sands collected along the coastal area of Tamilnadu, India using gamma ray spectrometry

Thangam, V.; Rajalakshmi, A.; Chandrasekaran, A.; Arun, B.; Viswanathan, S.; Venkatraman, B.; Bera, Subhas Chandra

doi:10.1007/s10967-022-08193-5

Cited by 15 publications

(3 citation statements)

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“…Where, A c is the activity concentration of the radionuclide given in Bq kg − 1 , NCPS is the net count per second, which is obtained by subtracting the background counts from the gross counts with the same counting time (10000 seconds) under the selected photo peaks, w is the weight of the respective sample in kg, and is the e ciency factor (cps/Bq) [24].…”

Section: Resultsmentioning

confidence: 99%

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Mineralogical characterization and environmental radiation health assessment in brick samples of Tamil Nadu

Karthikayini

Chandrasekaran

2023

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Natural radioactivity due to 238U, 232Th, and 40K in brick samples from Tamil Nadu was determined using gamma-ray spectrometry. The calculated mean activity concentrations of 238U, 232Th, and 40K, 69 ± 6, 62 ± 6, and 462 ± 23 Bq kg− 1, are higher than the world recommended limits of 35, 45, and 420 Bq kg− 1, respectively, and they are compared with the other countries. The calculated radiological parameters radium equivalent activity (193 ± 17 Bq kg− 1), internal hazard index (0.71 ± 0.06), activity utilization index (1.43 ± 0.13) were lower, while absorbed dose rate (89 ± 8 nGy h− 1), annual effective dose equivalent (0.43 ± 0.04 mSv y− 1) and excess lifetime cancer risk (1.52 ± 0.13 mSv y− 1), which are slightly higher than the world’s recommended limits. The minerals presented in the soil samples were identified using FT-IR and XRD techniques. Both techniques revealed that the presence of quartz, orthoclase, kaolinite, microcline, albite, illite, calcite, montmorillonite and organic carbon in the samples. Bi-variate statistical analysis was estimated to corroborate the relationship between radionuclides and radiological hazards.

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Section: Resultsmentioning

confidence: 99%

“…Where, σ B is the standard deviation of background counts per second, ε is the absolute e ciency of photopeak, and T is the counting time in seconds [24]. The calculated BDL values were 8 Bq kg − 1 for 238 U and 232 Th, and 30 Bq kg − 1 for 40 K [25].…”

Section: Bdl = (1)mentioning

confidence: 99%

Mineralogical characterization and environmental radiation health assessment in brick samples of Tamil Nadu

Karthikayini

Chandrasekaran

2023

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“…Therefore, natural radionuclides are found mostly in high concentrations in volcanic, phosphate, granite, and salt rocks (Dindaroğlu, 2014). Metamorphic, sedimentary rocks, and granite rocks and their decomposition products are highly widespread around the Tamil Nadu coastal areas (Thangam et al, 2022). Figure 2 shows the box plot distribution of gross alpha and gross beta activity concentration for sediment samples.…”

Section: Measurement Of Gross Alpha and Beta Activity In Sediment Sam...mentioning

confidence: 99%

Alpha, beta and gamma radiation assessment along the Northeast Coast of Tamil Nadu, India

Sathish,

Chandrasekaran,

Musthafa

2023

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In this study, 21 sediment samples were collected from twenty-one locations along the Northeast coastal area of Tamil Nadu, India to estimate the activity concentration of gross α, gross β, and primordial radionuclides (238U, 232Th, and 40K) using alpha & beta counters, and NaI (Tl) γ-ray detector respectively. Mean activity concentrations were measured as 32 Bq kg− 1 for gross α, 621 Bq kg− 1 for gross β, 60 Bq kg− 1 for 238U, 70 Bq kg− 1 for 232Th, and 573 Bq kg− 1 for 40K. The different radiological parameters are calculated for all samples and compared to assess the complete radiological profile of the sediments. The average activities of 238U, 232Th, and 40K are higher than the world average values of UNSCEAR reports. Gamma dose rate and annual effective dose equivalent in the sediment samples are more than the recommended safety levels. eU/eTh ratio applied for the paleo-oxygenation state of the coastal sediments.

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Natural radioactivity and mineral assessment in red and black colored soils collected from agricultural area of Tiruvannamalai district of Tamil Nadu, India

Sathish¹,

Chandrasekaran²,

Tamilarasi³

et al. 2022

J Radioanal Nucl Chem

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Determination of natural radioactivity in beach sands collected along the coastal area of Tamilnadu, India using gamma ray spectrometry

Cited by 15 publications

References 50 publications

Mineralogical characterization and environmental radiation health assessment in brick samples of Tamil Nadu

Mineralogical characterization and environmental radiation health assessment in brick samples of Tamil Nadu

Alpha, beta and gamma radiation assessment along the Northeast Coast of Tamil Nadu, India

Natural radioactivity and mineral assessment in red and black colored soils collected from agricultural area of Tiruvannamalai district of Tamil Nadu, India

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