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Concentrations of iodine-129 in livestock, agricultural, and fishery products around spent nuclear fuel reprocessing plant in Rokkasho, Japan, during and after its test operation.
- Source :
-
Environmental monitoring and assessment [Environ Monit Assess] 2019 Jan 11; Vol. 191 (2), pp. 61. Date of Electronic Publication: 2019 Jan 11. - Publication Year :
- 2019
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Abstract
- Concentrations of iodine-129 ( <superscript>129</superscript> I) and atomic ratios of <superscript>129</superscript> I/ <superscript>127</superscript> I in livestock (grass and milk), agricultural (cabbage, Japanese radish, and rice), and fishery (flatfish and brown alga) products collected from locations around the first Japanese commercial spent nuclear fuel reprocessing plant in Rokkasho were measured from 2006 to 2016. The actual spent nuclear fuel rods were cut and processed to test the functioning of the plant that discharged controlled amounts of <superscript>129</superscript> I to the atmosphere and coastal seawater during the period from 2006 to 2008 (the "cutting period"). Statistically significant increases in <superscript>129</superscript> I concentration and <superscript>129</superscript> I/ <superscript>127</superscript> I ratio were observed during the cutting period in livestock products and flatfish. On the other hand, these parameters were statistically comparable during and after the cutting period in the other products. The radiation dose through the ingestion of the maximum <superscript>129</superscript> I concentrations, measured in the different products, was estimated to be in the nanoSievert per year level. This value is much smaller than 1 mSv yr <superscript>-1</superscript> , which is the permissible authentic radiation dose for the general public. The <superscript>129</superscript> I levels in the samples, especially in milk and flatfish, are discussed in context of the <superscript>129</superscript> I discharge history from the plant.
- Subjects :
- Agriculture
Animals
Atmosphere analysis
Brassica chemistry
Fisheries
Japan
Livestock metabolism
Milk chemistry
Nuclear Power Plants
Oryza chemistry
Phaeophyceae chemistry
Poaceae chemistry
Raphanus chemistry
Seawater chemistry
Air Pollutants, Radioactive analysis
Crops, Agricultural chemistry
Flatfishes metabolism
Iodine Radioisotopes analysis
Radiation Monitoring
Water Pollutants, Radioactive analysis
Subjects
Details
- Language :
- English
- ISSN :
- 1573-2959
- Volume :
- 191
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Environmental monitoring and assessment
- Publication Type :
- Academic Journal
- Accession number :
- 30635730
- Full Text :
- https://doi.org/10.1007/s10661-019-7211-z