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J Environ Radioact. 2015 Apr;142:54-61. doi: 10.1016/j.jenvrad.2015.01.005. Epub 2015 Jan 30.

Distribution and risk assessment of radionuclides released by Fukushima nuclear accident at the northwest Pacific.

Author information

1
Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China. Electronic address: yuwen@tio.org.cn.
2
Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.

Abstract

In order to understand the impact of Fukushima Nuclear Accident (FNA) on the marine environment, seawater and a composite squid (Ommastrephe bartrami) sample were collected on the monitoring cruise XT01 during June 16-July 4, 2011. The concentration levels of Cesium-134, Cesium-137, Strontium-90, Silver-110 m, Cobalt-58 and Cobalt-60 were measured both for the seawater and squid samples. The elevated activity levels of Cesium-134 and Cesium-137 were found in the sampling area. Cesium-134 and Silver-110 m, which were usually undetectable before FNA, were also found in the squid sample, with the activity levels of 1.65 ± 0.13 Bq/kg-wet and 0.07 ± 0.01 Bq/kg-wet, respectively. The radiological assessment result showed that the radioactive release from the FNA would not have a significant adverse effect on marine biota at the population level.

KEYWORDS:

Fukushima Dai-ichi nuclear power plant accident; Marine radioactivity; Radiological risk assessment; Squid

PMID:
25644751
DOI:
10.1016/j.jenvrad.2015.01.005
[Indexed for MEDLINE]
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