Assessment of natural radionuclide enrichment and radiation hazard from building materials in Kannur District, Kerala

Mahamood, K. Nadira; Kaliprasad, C. S.; Narayana, Y.; Prakash, V.

doi:10.1007/s10967-019-06519-4

Cited by 7 publications

(2 citation statements)

References 17 publications

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“…Generally, it can be observed from Table 1 that, the activity concentration of 40 K was found to be the highest in all the analysed samples of the four commonly used building materials within the study area, then followed by 2226 Ra with 232 Th having the lowest. This clearly indicates that 226 Ra and 40 K are the major sources of gamma radiation in the studied samples and this is in good agreement with a similar studies conducted in Kerala, India 31 . Additionally, the relatively high amount of 40 K observed in all the samples though not above the world average value, can be attributed to the amount of potassium silicate in the geological formations of area and the intense agricultural activities in the environment 5 .…”

Section: Resultssupporting

confidence: 92%

Investigation of natural radionuclides and radiation shielding potential of some commonly used building materials in Northwestern Nigeria

Garba,

Aliyu,

Rabiu

et al. 2024

Sci Rep

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This study assessed the gamma-ray shielding potential of clay, sand, gypsum and kaolin commonly used as a building material in Northwestern, Nigeria. The radiological status of the samples was first evaluated by determining the activity concentrations of 238U, 232Th and 40K using NaI (Tl) detector after which elemental composition and mass density were determined using Neutron Activation Analytical Technique. After which the mass attenuation coefficients (MAC), linear attenuation coefficients (LAC), half value layer (HVL), tenth value layer (TVL), and effective atomic number (Zeff) were determined experimentally and theoretically using standard point sources of 137Cs and 60Co photon peaks (0.662 and 1.332, 1.173) MeV and Py-MLBUF software. The activity concentrations were found to range from 51 to 59 Bq kg−1 with a mean value of 59 Bq kg−1 for 238U, 24 to 27 Bq kg−1 with a mean value of 29 Bq kg−1 for 232Th, and 219 to 247 Bq kg−1 with a mean value of 247 Bq kg−1 for 40K which were about within the world recommended values of 33, 45 and 420 Bq kg−1 respectively. The results of the elemental compositions show that Si, Al, K, Fe, and Ba in clay and sand samples have concentrations in the range of 36.83–78.48%, 1.92–26.05%, 6.33–21.96%, 2.39–19.09%, and 0.09–1.44%, respectively, while in kaolin and gypsum, results revealed that Si, Al, K, Fe, and Ca range between 0.34 and 65.52%, 1.14–35.82%, 0.00–12.12%, 0.00–5.77%, and 0.00–96.6%, respectively. However, the concentrations of other elements such as Mg, Ti, Mn, Zn, Na, and Ba varied significantly with the samples. The results showed that clay has an average density of 1.96 g/cm3, sand has 2.32 g/cm3, kaolin has 2.63 g/cm3, and gypsum has the highest density with a value of 2.66 g/cm3 compared to other samples. During the measurements, a thallium-activated sodium-iodide NaI (TI) detector was used. A narrow beam transmission geometry condition was adopted for the measurements to ensure minimal scattered radiation. Absorption and attenuation of gamma beams as a function of sample thickness against gamma energy generally exhibit an increasing gamma ray behaviour as the sample thickness increases from 1 to 3 cm. The results showed that the gypsum, kaolin, sand, and clay were capable of attenuating 63.5%, 61.5%, 58.4%, and 44.2 of gamma-ray photons of energy 0.662 MeV at 3 cm thickness %, respectively, and 40.6%, 32.9%, 30.6%, and 27.3% of gamma energy 1.332 MeV at 3 cm thickness, respectively. The results showed that MAC, LAC, and Zeff of all the samples decreased with an increase in photon energy, while those of HVL and TVL increased. The experimental results for all the gamma-ray shielding parameters were found to be in good agreement with the theoretical values obtained using Py-MLBUF. The results have shown that all the samples have similar photon attenuation behaviours; however, gypsum has the best shielding potential than kaolin and this is attributed due to its highest density value.

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Section: Resultssupporting

confidence: 92%

Investigation of natural radionuclides and radiation shielding potential of some commonly used building materials in Northwestern Nigeria

Garba,

Aliyu,

Rabiu

et al. 2024

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Generally, it can be observed from Table 1 that, the activity concentration of 40 K was found to be the highest in all the analyzed samples of the four commonly used building materials within the study area, then followed by 226 Ra with 232 Th having the lowest. This clearly indicates that 226 Ra and 40 K are the major sources of gamma radiation in the studied samples and this is in good agreement with a similar study conducted in Kerala, India [ 38 ]. Additionally, the relatively high amount of 40 K observed in all the samples though not above the world average value, can be attributed to the abundance of potassium silicate minerals in the geological formations of the study area and the intense agricultural activities in the environment.…”

Section: Resultssupporting

confidence: 92%

Evaluation of radiological risk associated with local building materials commonly used in Northwestern Nigeria

Garba

Rabiu

Aliyu

et al. 2023

Heliyon

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Evaluation of radiological hazards due to natural radionuclide in rocks and the dependence of radioactivity on the mineralogy of rocks in Udupi district on the south west coast of India

Achari

Vinutha²,

Kaliprasad

et al. 2021

J Radioanal Nucl Chem

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Assessment of natural radionuclide enrichment and radiation hazard from building materials in Kannur District, Kerala

Cited by 7 publications

References 17 publications

Investigation of natural radionuclides and radiation shielding potential of some commonly used building materials in Northwestern Nigeria

Investigation of natural radionuclides and radiation shielding potential of some commonly used building materials in Northwestern Nigeria

Evaluation of radiological risk associated with local building materials commonly used in Northwestern Nigeria

Evaluation of radiological hazards due to natural radionuclide in rocks and the dependence of radioactivity on the mineralogy of rocks in Udupi district on the south west coast of India

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