نتایج جستجو برای: natural radionuclides
تعداد نتایج: 485083 فیلتر نتایج به سال:
The paper provides an overview of natural radionuclides in surface water and groundwater, their maximum permissible concentrations, health effects, different processes of removal (aeration, coagulation and co-precipitation, filtration, adsorption, ion exchange, membrane separation), treatment costs, and options of radioactive waste management.
The main aim of this work was to determine the levels multiple natural radionuclides in an aquatic system (Moulouya river, Morocco) impacted by abandoned Zinc and Lead mines. 238U, 234U, 232Th, 230Th 210Po were determined alpha-particle spectrometry water sediment samples collected along river from three pit lakes mines, located Upper Moulouya catchment area. results enabled analysis different ...
a reconnaissance study has been made on the distribution of 238u, 232th, 40k, 137cs andgeochemical features in soil and sediment samples at various locations on the coast of bushehr in the persiangulf. in this study a gamma-ray spectrometer based on a high purity germanium detector and a pc basedmca and x-ray fluorescence (xrf) method were used. estimation of the measured radionuclide contentha...
The present paper has determined the radioactivity concentrations, which are due to natural occurrence of radionuclides along with heavy metal concentration in water, sediment, and fish from 2 reservoirs in Ghana. Heavy metal concentrations in all samples were generally within the WHO safe limits with the average activity concentrations of 238U, 232Th, and 40K in water being respectively 0.42±0...
Measurement of natural radionuclides concentration in Samosir area of Sumatera island of Indonesia aims to obtain basis data of the content of radionuclides that could be tended in the development of the area. This research was conducted using Neutron Activation Analysis (NAA), which consists of a sampling of soil of Samosir Island as the residential area and the soil surrounding of Pangururan ...
The paper summarizes results of investigation of the current state of radioactive contamination on site being under consideration for planned nuclear power plant in northern Poland. Thanks to use of sequential procedure it was possible to determine activity concentrations for radioisotopes of nine elements, both natural and artificial. Results show that observed levels of radioactive contaminat...
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