Studies on internal exposure doses received by the cuban population due to the intake of radionuclides from the environmental sources
| Autor: | I. M. Fernández Gómez, N. Martínez Ricardo, O. Díaz Rizo, A. Hernández Pérez, G. V. Rodríguez Castro, O. Brígido Flores, M. Prendes Alonso, J. Carrazana González, J. Tomás Zerquera, G.M López Bejerano, J. O. Ara do López, N Acosta Rodríguez |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Adult
Male Water Pollutants Radioactive Adolescent Population Radiation Dosage Models Biological Food group Toxicology Population Groups Radiation Monitoring Ingestion Humans Radiology Nuclear Medicine and imaging education Child Food Contamination Radioactive Radioisotopes education.field_of_study Radionuclide Radiation Radiological and Ultrasound Technology Inhalation business.industry Air exchange Public Health Environmental and Occupational Health Cuba General Medicine Environmental Exposure Middle Aged Air Pollutants Radioactive Reference values Child Preschool Environmental science Body Burden Female Nuclear medicine business |
| Zdroj: | Radiation protection dosimetry. 121(2) |
| ISSN: | 0144-8420 |
| Popis: | Studies for the determination of radionuclide concentrations in foodstuffs, water and air were carried out in Cuba for the estimation of annual committed effective doses to members of the public as a result of environmental radionuclides via ingestion and inhalation. As a result of these studies, it was possible to determine the concentrations of 226Ra, 210Pb, 210Po, 232Th, 90Sr and 137Cs in different food groups that constitute the diet of the Cuban population, as well as the 222Rn concentrations in air. Based on these results and using previously obtained results for doses due to the 40K body content, the annual committed effective doses due to the intake of studied radionuclides were estimated. An average value of 120+/-4 microSv y-1 was obtained for doses due to ingestion of food and water and the obtained value for 222Rn inhalation was 240+/-1 microSv y-1. Using the representative value obtained previously for 40K (150+/-40 microSv y-1) and assuming a dose of 50+/-50 microSv y-1 for the probable contribution of 220Rn by inhalation, a representative value of 560+/-20 microSv was estimated for the average annual committed effective doses due to ingestion and inhalation of radionuclides for the Cuban population. Obtained values are consistent with the expected results, taking into account the characteristics of Cuban exposure scenarios, with low-activity concentration levels in environmental objects and high air exchange rates in dwellings: These results are in the same order of magnitude as results obtained by other authors and the reference values established by the USNCEAR. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|