罕见的地表低辐射水平区域:珊瑚礁区

辐射防护 ›› 2018, Vol. 38 ›› Issue (4): 287-291.

罕见的地表低辐射水平区域:珊瑚礁区

林武辉^1,2, 余克服^1,2, 王英辉^1,2, 刘昕明³, 汪建君⁴, 宁秋云³, 李英花³

1.广西南海珊瑚礁研究重点实验室,南宁 530004;
2.广西大学海洋学院,南宁 530004;
3.广西海洋研究院,南宁 530004;
4.国家海洋局海洋大气化学与全球变化重点实验室,福建厦门 361005

收稿日期:2017-10-18 出版日期:2018-07-20 发布日期:2020-07-28
通讯作者: 余克服。 E-mail: kefuyu@scsio.ac.cn
作者简介:林武辉(1987—),男,2009年本科毕业于厦门大学海洋科学专业,2015年毕业于清华大学核科学与技术专业,获博士学位。E-mail: linwuhui8@163.com
基金资助:
国家重大科学研究计划项目(2013CB956102), 广西自然科学基金(2017GXNSFBA198096), 国家海洋局海洋-大气化学与全球变化重点实验室开放基金(GCMAC1606), 国家自然科学基金项目(91428203)和广西“珊瑚礁资源与环境”八桂学者项目(2014BGXZGX03)。

Unusual low radiation area on the surface of the earth: coral reefs

LIN Wuhui^1,2, YU Kefu^1,2, WANG Yinghui^1,2, LIU Xinming³, WANG Jianjun⁴, NING Qiuyun³, LI Yinghua³

1. Guangxi Laboratory on the study of Coral Reefs in the South China Sea, Nanning 530004;
2. School of Marine Sciences, Guangxi University, Nanning 530004;
3. Guangxi Academy of Oceanography, Nanning 530022;
4. Key Lab of Global Change and Marine-Atmospheric Chemistry, State Oceanic Administration, Fujian Xiamen 361005

Received:2017-10-18 Online:2018-07-20 Published:2020-07-28

摘要/Abstract

摘要： 相对于陆地辐射水平研究,珊瑚礁区的研究较为匮乏。利用高纯锗γ谱仪测量南海岸礁和环礁的珊瑚礁区沉积物中的放射性核素,得到:²³⁸U比活度均值为28.96 Bq/kg,²²⁸Ra为5.08 Bq/kg,²²⁶Ra为3.34 Bq/kg,⁴⁰K为24.36 Bq/kg。研究发现南海珊瑚礁区沉积物的辐射环境质量评价指数显著低于国际推荐值,南海珊瑚礁区沉积物的等当量镭指数为其它中国海区、中国均值、世界均值的等当量镭指数的10%左右,是高辐射本底区域的等当量镭指数的1‰,是地表环境中罕见的低辐射水平区域。

关键词: 珊瑚礁, 放射性核素, 低辐射水平, 南海

Abstract: Radioactivity levels are rarely investigated in coral reefs compared to the land. In this study, the average radioactivity levels of ²³⁸U, ⁴⁰K, ²²⁸Ra and ²²⁶Ra were measured by High Purified Germanium (HPGe) γ spectrometry and found to be 28.96 Bq/kg, 24.36 Bq/kg, 5.08 Bq/kg, 3.34 Bq/kg respectively in marine sediments collected from coral reefs of the South China Sea (SCS).The environmental radiation quality was assessed by several indexes which was found to be significantly lower than the international recommended values. A comparison with marine sediments from other sea areas of China, the average of China, and the world average indicated that radium equivalent activity of coral reefs was only ~10% and ~1‰ of the world average and the high background radiation area (HBRA), respectively. Coral reefs have a unique feature of extremely low radioactivity in the surface of the earth.

Key words: coral reefs, radionuclide, low radioactivity, South China Sea

中图分类号:

X834

林武辉, 余克服, 王英辉, 刘昕明, 汪建君, 宁秋云, 李英花. 罕见的地表低辐射水平区域:珊瑚礁区[J]. 辐射防护, 2018, 38(4): 287-291.

LIN Wuhui, YU Kefu, WANG Yinghui, LIU Xinming, WANG Jianjun, NING Qiuyun, LI Yinghua. Unusual low radiation area on the surface of the earth: coral reefs[J]. RADIATION PROTECTION, 2018, 38(4): 287-291.

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