作　　者： ; ; ; ; ;

机构地区： 中国水产科学研究院东海水产研究所

出　　处： 《农业环境科学学报》 2013年第10期2066-2071,共6页

摘　　要： 为了解福岛核事故泄漏放射性核素对海洋环境的污染情况,于2011年8—11月在北太平洋公海渔场采集柔鱼样品,带回实验室利用超低本底HPGeγ谱仪进行分析。监测到福岛核事故释放并扩散至北太平洋公海海域的放射性核素有110Ag、134Cs和137Cs,其中110Ag在3种核素中含量百分比最高,在90%以上,134Cs只占0~1.5%,137Cs也只为0.2~1.3%。在所有站位中,110Ag、137Cs、134Cs 3种核素均在同一站位(155.08°E、42.17°N)含量达最高,分别为101.31、32.63、32.63 Bq·kg-1。另外,对比了靠近日本西侧的日本海海域样品,检测到的110Ag核素含量为1.50 Bq·kg-1、137Cs核素含量为0.05 Bq·kg-1,但未检测出超出本底的134Cs,总体放射性核素含量比日本以东的公海海域明显要低,暗示这次日本核泄漏对西部海域海洋生物的影响比较小。 To examine contamination of radionuclides emitted from Fukushima nuclear accident on marine organisms, neon flying squid samples were collected from the high seas in the North Pacific Ocean between August and November in 201 I. A HPGe~ spectrometer with ultra-low background was used to measure concentrations of three radionuclides（ 180Ag, 134Cs and 137Cs ）. Of three radionuclides, II^Ag was dominant with over 90%, while Cs and IS7Cs were 0%-1.5% and 0.2%-1.3%, respectively. These nuclides had the highest concentrations 110Ag, 101.31 Bqkg-1 137 Cs, 32.63 Bq-kg-~ and t^4Cs, 32.63 Bq＇kg-~） in the squids at the site（ 155.08E, 42.17N）. On the contrary, the radionuclides in the squid from the Japan Sea close to the western Japanese main islands were much lower（ II^Ag, 1.50 Bq. kg-J; 137Cs, 0.05 Bq＂ kg-~ and ~4Cs, 0 Bq＂ kg-~ ）. These findings indicated that the Fukushima nuclear accident might have limited influences on marine organ- isms in the Sea of Japan.

关 键 词： 福岛核事故 人工放射性核素 柔鱼 北太平洋海域

领　　域： [环境科学与工程]