title: Underground measurements of artificial radioactivity in squids from the western Pacific Ocean.
abstract: To investigate the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident's radiological effect on marine ecosystem, ash samples of squids from the western Pacific Ocean were collected in May 2014 and measured using an underground gamma-ray spectrometer in the underground laboratory JinPing. Low levels of108mAg,110mAg,134Cs and137Cs were detected, which indicates that the influence of the FDNPP accident on marine ecosystem is lasting but decreasing.
authors.affiliation: Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084, China.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Zeng
authors.affiliation: Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084, China.
authors.forename: Yu-Hao
authors.initials: YH
authors.lastname: Mi
authors.affiliation: Laboratory of Marine Isotopic Technology and Environmental Risk Assessment, State Oceanic Administration, Xiamen 361005, China; Third Institution of Oceanography, State Oceanic Administration, Xiamen 361005, China.
authors.forename: Jian-Hua
authors.initials: JH
authors.lastname: He
authors.affiliation: Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084, China. Electronic address: mahao@tsinghua.edu.cn.
authors.forename: Hao
authors.initials: H
authors.lastname: Ma
authors.affiliation: Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084, China.
authors.forename: Jian-Ping
authors.initials: JP
authors.lastname: Cheng
mesh_terms: D000818:Animals; D002681:China; D049832:Decapodiformes / Q000737:chemistry*; D017753:Ecosystem; D005507:Food Contamination, Radioactive / Q000032:analysis; D062406:Fukushima Nuclear Accident; D006801:Humans; D010140:Pacific Ocean; D011834:Radiation Monitoring / Q000379:methods; D011848:Radioactive Pollutants / Q000032:analysis*; D013051:Spectrometry, Gamma
chemical_list: D011848:Radioactive Pollutants
keywords: Artificial radioactivity; CJPL; Fukushima Dai-ichi Nuclear Power Plant accident; GeTHU; Squid