240 Pu/239Pu atom ratios in the bottom sediments of the NW Pacific Ocean
Creators
- 1. Korea Institute of Nuclear Safety, Taejon (Korea, Republic of). Dept. of Radiological Safety Research
- 2. Korea Ocean Research and Development Institute, Seoul (Korea, Republic of). Isotope Oceanography Lab.
- 3. Meteorological Research Institute, Ibaraki (Japan). Geochemical Research Dept.
- 4. Linkoeping Univ. (Sweden). Dept. of Radiation Physics
Description
239+240Pu concentrations and 240Pu/239Pu atom ratios in bottom sediments of the Yellow Sea, Korea Strait, East Sea (Sea of Japan), Sea of Okhotsk, and Northwest Pacific Ocean were determined. In coastal sediments near the Korean Peninsula, 239+240Pu concentrations varied from 0.02 to 1.72 Bq x kg-1, and their 240Pu/239Pu atom ratios from 0.15 to 0.24, with an average of 0.20 ± 0.03. 240Pu/239Pu atom ratios of bottom sediments in the deep NW Pacific Ocean and its marginal seas (East, Okhotsk seas) were in the range of 0.15-0.23. A little elevated 240Pu/239Pu atom ratios in the bottom layer sediment may be due to Pu released into the environment during the pre-moratorium period, having high 240Pu/239Pu atom ratios and low 238Pu/239+240Pu activity ratios. (author)
Additional details
Publishing Information
- Journal Title
- Journal of Radioanalytical and Nuclear Chemistry
- Journal Volume
- 258
- Journal Issue
- 2
- Journal Page Range
- p. 265-268
- ISSN
- 0236-5731
- CODEN
- JRNCDM
INIS
- Country of Publication
- Hungary
- Country of Input or Organization
- Hungary
- INIS RN
- 35018863
- Subject category
- S54: ENVIRONMENTAL SCIENCES;
- Descriptors DEI
- ISOTOPE RATIO; PACIFIC OCEAN; PLUTONIUM 239; PLUTONIUM 240; RADIOACTIVITY; REPUBLIC OF KOREA; SEA BED; SEDIMENTS
- Descriptors DEC
- ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; ASIA; DEVELOPING COUNTRIES; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; HEAVY NUCLEI; ISOTOPES; NUCLEI; PLUTONIUM ISOTOPES; RADIOISOTOPES; SEAS; SPONTANEOUS FISSION RADIOISOTOPES; SURFACE WATERS; YEARS LIVING RADIOISOTOPES
Optional Information
- Notes
- 15 refs.