1. Air radioactivity levels following the Fukushima reactor accident measured at the Laboratoire Souterrain de Modane, France.
- Author
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Loaiza P, Brudanin V, Piquemal F, Reyss JL, Stekl I, Warot G, and Zampaolo M
- Subjects
- Agaricales chemistry, Food Contamination, Radioactive analysis, France, Japan, Poaceae chemistry, Radiation Monitoring, Radioactivity, Air Pollutants, Radioactive analysis, Fukushima Nuclear Accident, Radioisotopes analysis
- Abstract
The radioactivity levels in the air of the radionuclides released by the Fukushima accident were measured at the Laboratoire Souterrain de Modane, in the South-East of France, during the period 25 March-18 April 2011. Air-filters from the ventilation system exposed for one or two days were measured using low-background gamma-ray spectrometry. In this paper we present the activity concentrations obtained for the radionuclides (131)I, (132)Te, (134)Cs, (137)Cs, (95)Nb, (95)Zr, (106)Ru, (140)Ba/La and (103)Ru. The activity concentration of (131)I was of the order of 100 μBq/m(3), more than 100 times higher than the activities of other fission products. The highest activities of (131)I were measured as a first peak on 30 March and a second peak on 3-4 April. The activity concentrations of (134)Cs and (137)Cs varied from 5 to 30 μBq/m(3). The highest activity concentration recorded for Cs corresponded to the same period as for (131)I, with a peak on 2-3 April. The results of the radioactivity concentration levels in grass and mushrooms exposed to the air in the Modane region were also measured. Activity concentrations of (131)I of about 100 mBq/m(2) were found in grass., (Copyright © 2012 Elsevier Ltd. All rights reserved.)
- Published
- 2012
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