食品科学

• 安全检测 • 上一篇    下一篇

舟山口岸进口鱿鱼中134Cs、137Cs比活度水平分析

周秀锦,鲁 华,邵宏宏,张 静,杨赛军   

  1. 1.舟山出入境检验检疫局,浙江 舟山 316021;2.舟山市食品药品检验检测研究院,浙江 舟山 316021
  • 出版日期:2016-07-25 发布日期:2016-07-26
  • 基金资助:

    浙江省公益科技计划项目(2015C37051);浙江检验检疫科技计划项目(ZK201426)

Investigation of the Specific Activity Values of 134Cs and 137Cs in Import Squid at Zhoushan Ports

ZHOU Xiujin, LU Hua, SHAO Honghong, ZHANG Jing, YANG Saijun   

  1. 1. Zhoushan Entry-Exit Inspection and Quarantine Bureau, Zhoushan 316021, China;
    2. Zhoushan Institute for Food and Drug Control, Zhoushan 316021, China
  • Online:2016-07-25 Published:2016-07-26

摘要:

目的:研究日本福岛核事故对舟山口岸进口鱿鱼中134Cs和137Cs比活度的影响。方法:选取北太、日本海、阿根廷和秘鲁4 个区域2011—2014年间310 份鱿鱼样品,采用高纯锗γ谱仪分析样品中134Cs和137Cs的比活度。结果:共检出阳性样品20 份,检出率为6.5%,其中北太鱿鱼占阳性样品的85.0%,134Cs的最高比活度为4.12×103 Bq/g,137Cs的最高比活度为6.89×103 Bq/g,远低于各国限量标准(最低限量为100×103 Bq/g)。结论:舟山口岸进口鱿鱼放射性核素134Cs、137Cs比活度低于10.0×103 Bq/g,不会危害食品质量安全,但是北太和日本海鱿鱼相对检出率高,应给予一定的关注。

关键词: 高纯锗&gamma, 谱仪, 鱿鱼, 放射性核素134Cs和137Cs, 比活度

Abstract:

Objective: To examine the influence of the Japanese Fukushima nuclear accident on the activity concentrations
of 134Cs and 137Cs in import squid at Zhoushan ports. Methods: A total of 310 samples from the North Pacific Ocean, the Sea
of Japan, Argentina sea area, and Peru sea area were selected during 2011?2014, and the activity concentrations of 137Cs and
134Cs in these samples were analyzed by using a high-purity germanium (HPGe) gamma-ray spectrometer. Results: Among
310 samples analyzed, 20 (6.5%) were found to be positive and the North Pacific squid accounted for 85.0% of the total
positive samples. The highest specific activity values of 137Cs and 134Cs were 6.89 × 103 and 4.12 × 103 Bq/g, respectively, far
lower than the standard limits in different countries (the minimum limit is 100 × 103 Bq/g). Conclusion: The specific activity
values of 137Cs and 134Cs in import squid at Zhoushan ports were lower than 10.0 × 103 Bq/g, not harmful to food quality and
safety. However, the relative detection rates of squid from the North Pacific Ocean and the Sea of Japan squid were higher.
Thus, attention should be paid to this issue.

Key words: high purity germanium gamma-ray spectrometer, squid, nuclear pollution, specific activity

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