Radioactivity in the community water supplies of Ife-Central and Ife-East local government areas of Osun State, Nigeria

Assessment of Radionuclide Concentrations and Absorbed Dose from Consumption of Community Water Supplies in Oil and Gas Producing Areas in Delta State, Nigeria

“…Although the results of our investigation are high when compare to that of a non oil and gas areas (control) with similar geology, but still within arrange obtained elsewhere [23]. K may be determined directly from all the water types since some of them are ingested indirectly by man.…”

“…Measurement of radionuclide concentrations in the water sample were carried out at least twice to check on the reproducibility of results and the stability of the counting system. The overall uncertainty in the measured concentrations was estimated using the procedure already described in an earlier work [23].…”

“…Here in Nigeria, Olomo et al, [22] reported their findings on the mean specific activities in soil and water around some nuclear establishment in Ile-Ife; while Tchokossa et al [23] reported the results of measurements of naturally occurring radionuclide concentrations in the community water supplies in two local government areas in Ile-Ife Osun State.…”

Assessment of Radioactivity Contents and Associated Risks in Some Soil Used for Agriculture and Building Materials in Cameroon

“…The sealed samples were kept for at least 28 days to allow a stage of secular equilibrium to reach before gamma spectrometry analysis commenced. The counting equipment well described elsewhere [12,16] was a Canberra vertical high-purity coaxial germanium (HPGe) crystal detector, model GC 2018 -7500, serial number b87063 enclosed in a 100 mm thick lead shield and coupled to a Canberra Multichannel Analysing (MCA) computer system. The energy and efficiency calibrations were done using a well calibrated standard soils sources supplied by the International Atomic Energy Agency (IAEA), Vienna, Austria (Reference Material IAEA-375 for radionuclides and trace elements in soil) and some radioactive point sources from the Isotopes Products Laboratories, Burbank, California, USA.…”

“…Here in Nigeria, Tchokossa and his co-workers reported the results of many investigations on the distribution of radioactivity content in various environmental matrices [12][13][14][15][16][17][18][19], while in Cameroon, Makon et al carried out similar research in some edible vegetable cultivated and consumed worldwide [20]. Cameroon is located at the center of both operational and non-operational nuclear reactors and industries (Figure 1), and to the best of my knowledge, there is no published or on-going works on the survey of Cameroonian's soil.…”