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

Sathish, V.; Chandrasekaran, A.; Tamilarasi, A.; Thangam, V.

doi:10.1007/s10967-022-08570-0

Cited by 9 publications

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References 42 publications

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“…The energy calibration was accomplished by inserting known-energy gamma sources, 137 Cs (662 keV) and 60 Co (1173-1332 keV), into the detector.Considering that 238 U, and 232 Th, as well as their decay products, are in secular equilibrium, the concentration of 238 U, and 232 Th were calculated from their progeny photopeak of 1764 keV for 214 Bi and 2614 keV for 208 Tl were used for determining the activity concentrations of 238 U and 232 Th respectively, and the gamma-ray transition of 1460 keV was used to determine40 K concentrations. Other details of the instrument and procedure for radioactivity measurement (NaI (Tl) γ-ray spectrometer) were discussed in our previous works(Sathish et al, 2022a;Sathish et al, 2022b).…”

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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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