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Trace Levels of Fukushima Disaster Radionuclides in East Pacific Albacore Public Deposited

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https://ir.library.oregonstate.edu/concern/articles/1r66j227k

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Abstract
  • The Fukushima Daiichi power station released several radionuclides into the Pacific following the March 2011 earthquake and tsunami. A total of 26 Pacific albacore (Thunnus alalunga) caught off the Pacific Northwest U.S. coast between 2008 and 2012 were analyzed for ¹³⁷Cs and Fukushima-attributed ¹³⁴Cs. Both 2011 (2 of 2) and several 2012 (10 of 17) edible tissue samples exhibited increased activity concentrations of ¹³⁷Cs (234−824 mBq/kg of wet weight) and ¹³⁴Cs (18.2−356 mBq/kg of wet weight). The remaining 2012 samples and all pre-Fukushima (2008−2009) samples possessed lower ¹³⁷Cs activity concentrations (103−272 mBq/kg of wet weight) with no detectable ¹³⁴Cs activity. Age, as indicated by fork length, was a strong predictor for both the presence and concentration of ¹³⁴Cs (p < 0.001). Notably, many migration-aged fish did not exhibit any ¹³⁴Cs, suggesting that they had not recently migrated near Japan. None of the tested samples would represent a significant change in annual radiation dose if consumed by humans.
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  • Neville, D. R., Phillips, A. J., Brodeur, R. D., & Higley, K. A. (2014). Trace Levels of Fukushima Disaster Radionuclides in East Pacific Albacore. Environmental Science & Technology, 48(9), 4739-4743. doi:10.1021/es500129b
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  • 48
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  • 9
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  • The authors thank the Office of Science Director of the National Marine Fisheries Service for helping to fund this work.
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