Northwest Fisheries Science Center

Display All Information

Document Type: Journal Article
Center: NWFSC
Document ID: 7614
Title: Trace levels of Fukushima disaster radionuclides in East Pacific albacore
Author: Delvan R. Neville, Anthony Jason Phillips, Richard D. Brodeur, Kathryn A. Higley
Publication Year: 2014
Journal: Environmental Science & Technology
Volume: 48
Issue: 9
Pages: 4739-4743
Keywords: radioecology,albacore,cesium,seafood safety
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 (234824 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 (103272 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.

URL1: The next link will exit from NWFSC web site http://dx.doi.org/10.1021/es500129b
Theme: Sustainable, safe and secure seafood for healthy populations and vibrant communities
Foci: Support collaborative community-based data collection, dissemination, and analysis for fishers, fisheries management, science, marketing, seafood safety, and education
Provide scientific support to ensure safe seafood for healthy populations and characterize how human activities and climate affect risks from pathogens, chemical contaminants and biotoxins