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Distribution and accumulation of artificial radionuclides in marine products around Korean Peninsula.
- Source :
- Marine Pollution Bulletin; Sep2019, Vol. 146, p521-531, 11p
- Publication Year :
- 2019
-
Abstract
- We investigated the distributions of the artificial radionuclides <superscript>137</superscript>Cs, <superscript>239+240</superscript>Pu, and <superscript>90</superscript>Sr in the various marine products around Korean Peninsula collected in 2015–2017. The activities of <superscript>137</superscript>Cs, <superscript>239+240</superscript>Pu, and <superscript>90</superscript>Sr were in the ranges of 12.2–258.4 mBq kg<superscript>−</superscript><superscript>1</superscript>, 0.014–1.879 mBq kg<superscript>−</superscript><superscript>1</superscript>, and 11.3–18.3 mBq kg<superscript>−</superscript><superscript>1</superscript>, respectively. The higher <superscript>239+240</superscript>Pu (a factor of 10–50) relative to fishes were observed in mollusks. <superscript>137</superscript>Cs in fishes were significantly enriched with growths. The calculated concentration factors (CFs) of <superscript>137</superscript>Cs, <superscript>239+240</superscript>Pu, and <superscript>90</superscript>Sr in marine products were 7–143, 3–407, and 15–25, respectively. Overall, no noticeable artificial radioactivity was detected in marine organisms when comparing these results with previous data reported before the Fukushima nuclear accident and recommended CF values. The annual effective doses of <superscript>137</superscript>Cs, <superscript>239+240</superscript>Pu, and <superscript>90</superscript>Sr by seafood consumption in South Korea were estimated to be 1.1 × 10<superscript>−</superscript><superscript>4</superscript>, 1.6 × 10<superscript>−</superscript><superscript>5</superscript> and, 2.9 × 10<superscript>−</superscript><superscript>5</superscript> mSv yr<superscript>−</superscript><superscript>1</superscript>, respectively, which is insignificant relative to that of natural radionuclides. • Artificial radionuclides (ARs) were determined in marine products around South Korea. • No significant spatiotemporal variation of <superscript>137</superscript>Cs, <superscript>239,240</superscript>Pu, <superscript>90</superscript>Sr in marine biota • <superscript>137</superscript>Cs and <superscript>239,240</superscript>Pu in marine biota could vary according to main habitats and growth. • <superscript>137</superscript>Cs activity in fishes except salmon logarithmically correlated with body weight. • Annual dose of ARs were insignificant relative to those of natural radionuclides. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0025326X
- Volume :
- 146
- Database :
- Supplemental Index
- Journal :
- Marine Pollution Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 141613316
- Full Text :
- https://doi.org/10.1016/j.marpolbul.2019.06.082