Radiochemical and elemental analysis of clay soils collected from different locations

Radiochemical and elemental analysis of clay soils collected from different locations within Ekiti State have been performed with this study using gamma and XRF spectrometric measurements. Pb is definitely moderately enriched in all the locations. in the sample, is the atomic mass (kg 121062-08-6 mol-1), E,i is the decay constant of the measured isotope of element (s-1), is the fractional atomic large quantity in nature, and is the measured specific activity (Bq kg-1) of the radionuclide under consideration (238U, 232Th and 40?K), is the Avogadros quantity (6.023??1023 atoms mol-1), 121062-08-6 and is a constant with value of 1 1,000,000 for U and Th (concentration in ppm) or 100 for K (concentration in % of mass portion). Results and conversation The concentrations of 15 major and small elements together with three radionuclides are offered in Furniture?1, ?,22 and ?and3.3. The major elements, Fe, Ti, Ca, and K were estimated as their respective oxides and are given in % by excess weight, while the small elements, Cu, Zn, Mn, Zr, Ni, Se, Rb, Sr, Nb, Pb and As are offered in mg/kg unit. The naturally occurring radionuclides; U and Th are offered in ppm devices while K is definitely offered in % by excess weight. The conversation on each group is definitely presented below: Table 121062-08-6 1 Mass concentrations of U, Th and K and external gamma dose rate in clay dirt samples Table 2 Concentrations of major elements in clay dirt samples Table 3 Concentrations of small or trace elements in clay dirt samples Naturally happening radionuclides The massic elemental concentrations of three naturally happening radionuclides U, Th and K measured in the clay dirt samples investigated with this study are presented in Table?1. Ado Ekiti samples possess the highest mean concentration of uranium and potassium, and the highest mean concentration of thorium is found in Orin 121062-08-6 Ekiti. All the lowest imply concentrations are acquired in Isan Ekiti. The concentrations of the three radionuclides, U, Th and K, ranged from 1.2C4.1 ppm, 2.7C8.2 ppm and 0.1C1.6%, respectively. These radionuclides showed a range of concentrations, as a consequence of varying geological composition of the analyzed area. Massic conconcentrations of U, Th and K in comparison with additional locations around the world is definitely offered in Table?4. The mean U (ppm) concentration acquired with this study is definitely greater than ideals acquired in Albenia, Australia, Cyprus and Italy, lower than ideals acquired in Canada, Egypt and Jordan but comparable to ideals acquired in Serbia and Montenegro, and USA (Table?4). The mean concentration of Th (ppm) is definitely higher than those acquired in Cyprus and Egypt but lower than those acquired in Albenia, Australia, Bulgaria, Canada, Italy, Jordan, Serbia and Montenegro, and USA. The mean concentration of K (%) is definitely however lower than the ideals acquired in all these country except Cyprus. All the radionuclides concentrations except 121062-08-6 uranium are lower than the world average ideals (Table?4). Table 4 The assessment of the mass concentrations of U, Th and K in clay dirt samples of the present study with other locations around the world Estimation of gamma dose rate The radiological implications of the activity concentrations of the naturally occurring radionuclides present Mouse monoclonal to KDM3A in the clay samples were estimated using the external gamma dose rates at 1 m above an infinite homogeneous dirt medium per unit radioelement concentration presuming radioactive equilibrium in the uranium and thorium decay series. In the calculation, the contributions of artificial radionuclides.