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21.
El-Reefy HI Sharshar T Zaghloul R Badran HM 《Journal of environmental radioactivity》2006,87(2):148-169
The concentrations and distribution of gamma-ray emitting isotopes in Burullus Lake were investigated with the aim of evaluating the environmental radioactivity. Particularly in wetlands, natural properties of the environment can cause the actual inventory to be different from the activity originally deposited. The mean concentrations of (226)Ra, (232)Th and (40)K were 14.3, 15.5 and 224 Bq/kg, respectively, in the coastal soils. On the other hand, soil samples from the islands had mean concentrations of 13.5, 17.4 and 341 Bq/kg for (226)Ra, (232)Th and (40)K, respectively. Samples from coast and islands show evidence of possible transfer and accumulation of the (137)Cs radionuclide. The mean (137)Cs activity concentrations in the soil samples were 1.2 and 15.1 Bq/kg in the coast and islands, respectively. The vertical migration of (137)Cs was studied based on its content in the consequently located three soil layers down to 30 cm depth. The radium equivalent, dose rate in air and annual dose equivalent from the terrestrial natural gamma-radiation were evaluated. The mean activity concentrations of the gamma-ray emitting radionuclides in vegetation were relatively low. 相似文献
22.
Elbaz Ahmed M. Ahmed Ayman M. H. Abdel-Maqsoud Ahmed Badran Aml M. M. Abdel-Moneim Abdel-Moneim Eid 《Environmental science and pollution research international》2022,29(30):45578-45588
Environmental Science and Pollution Research - Global warming has become intensified and widespread, threatening the world with causing acute heatwaves that adversely affect poultry production and... 相似文献