Concentration of 129I in aquatic biota collected from a lake adjacent to the spent nuclear fuel reprocessing plant in Rokkasho, Japan
| Autor: | Hidenao Hasegawa, Shun'ichi Hisamatsu, Shinji Ueda, Hideki Kakiuchi, Hidehisa Kawamura |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Aquatic Organisms
Water Pollutants Radioactive Radiation integumentary system Radiological and Ultrasound Technology Brackish water fungi Public Health Environmental and Occupational Health Biota General Medicine Aquatic biota Spent nuclear fuel Iodine Radioisotopes Lakes Japan Radiation Monitoring Environmental chemistry Nuclear Power Plants Radioactive Waste Environmental science Radiology Nuclear Medicine and imaging Biological Assay Recycling Accelerator mass spectrometry |
| Zdroj: | Radiation protection dosimetry. 167(1-3) |
| ISSN: | 1742-3406 |
| Popis: | The spent nuclear fuel reprocessing plant in Rokkasho, Japan, has been undergoing final testing since March 2006. During April 2006-October 2008, that spent fuel was cut and chemically processed, the plant discharged (129)I into the atmosphere and coastal waters. To study (129)I behaviour in brackish Lake Obuchi, which is adjacent to the plant, (129)I concentrations in aquatic biota were measured by accelerator mass spectrometry. Owing to (129)I discharge from the plant, the (129)I concentration in the biota started to rise from the background concentration in 2006 and was high during 2007-08. The (129)I concentration has been rapidly decreasing after the fuel cutting and chemically processing were finished. The (129)I concentration factors in the biota were higher than those reported by IAEA for marine organisms and similar to those reported for freshwater biota. The estimated annual committed effective dose due to ingestion of foods with the maximum (129)I concentration in the biota samples was 2.8 nSv y(-1). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|