| 摘要: |
| 良好的环境质量是厦门成为一个宜居和滨海旅游城市的重要基石。自日本福岛核事故发生和福建省核电站陆续运行之后，厦门邻近海域潜在的核污染风险受到公众和管理部门的关注。本研究测定了2015年2月和8月厦门邻近海域海水和海洋沉积物中主要放射性核素的含量水平，并据此评价了该海域的环境放射性质量状况。结果表明海水中总铀、90Sr、226Ra、137Cs处于我国海洋放射性水平变化范围以内，无明显季节差异，其他放射性核素58Co、60Co、134Cs、110mAg、59Fe、54Mn、65Zn均未检出，海水中90Sr和137Cs的活度最大值远低于国家海水水质标准限值，海洋沉积物中放射性核素活度水平亦在我国海洋放射性水平变化范围以内。利用我国现有的海洋放射性环境质量评价方法对厦门邻近海域放射性质量状况进行分级评价得出其海水放射性质量为2级，海洋沉积物放射性环境质量为1级，均属于安全级别。研究结果表明2015年在厦门附近海域未观测到放射性污染现象。 |
| 关键词: 海洋环境科学 放射性污染 环境质量 环境评价 厦门邻近海域 |
| DOI：10.3969/J.ISSN.2095-4972.2022.03.009 |
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| 基金项目:福建省科技计划引导性资助项目(2018Y0058)；厦门市科技计划资助项目(3502Z20132007) |
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| Marine environmental radioactive levels in the waters adjacent to Xiamen and environmental quality assessment |
| CUI Shouxin,ZHANG Honghai,MEN Wu |
| (College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China,Laboratory of Marine Isotopic Technology and Environmental Risk Assessment, Third Institute of Oceanography, MNR, Xiamen 361005, China;College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China,Laboratory for Maine Ecology and Environmental Science, Pilot National Laboratory or Marine Science and Technology, Qingdao 266071, China) |
| Abstract: |
| Environmental quality is an important issue in Xiamen as a livable and coastal tourist city. Since the Fukushima nuclear accident and the successive operations of the nuclear power plants in Fujian Province, the potential risk of nuclear pollution in the waters adjacent to Xiamen has attracted the attention of public and government. In this study, the levels of main radionuclides in seawater and marine sediments in 2015 as well as the environmental radioactive quality were studied in the sea area around xiamen. The results showed that the concentrations (activities) of total uranium, 90Sr, 226Ra and 137 Cs in seawater were within the range of normal marine radioactive levels, and there were no significant seasonal differences. The artificial radionuclides 58Co, 60Co, 134Cs, 110mAg, 59Fe and 134Cs in seawater were under-detectable. The highest activities of 90Sr and 137Cs in seawater were far below the corresponding limits of national Sea Water Quality Standard. The activitiy levels of radionuclides in marine sediments were also in the range of normal marine radioactivity levels. Used the current method of marine radioactive environmental quality assessment set up by our laboratory, the radioactive environmental quality was classified. The results showed that radioactive environmental quality of the sea water in the study sea area was at Grade 2 and that of the marine sediments was at Grade 1, which were at the safety levels. Thus, there was not observable sign of radioactivity contamination in the waters around Xiamen in 2015. |
| Key words: marine environmental science radioactivity pollution environmental quality environmental assessment waters adjacent to Xiamen |
