我国放射分析化学的现状和展望

    Present Status and Perspectives of Radioanalytical Chemistry in China

    • 摘要: 放射分析化学是分析化学的重要分支,其以放射性核素及其形态和种态为研究对象,是聚焦核素分离材料、核素分离与测量技术、设备和方法研究的一门学科。几十年来,该学科在我国核科学与技术发展及国家核安全领域发挥了重要作用。特别是近年来,我国放射分析化学取得了长足发展,在特效分离材料国产化、痕量放射性核素的高灵敏分析、海洋环境放射性分析、核燃料循环过程工艺分析技术等方面取得了一系列高水平创新研究成果,专业技术队伍与科研平台的建设明显加强,有力支撑了我国国防建设、核环境安全保障、核能产业的快速发展和核燃料后处理的技术跃升。但与国际先进水平和我国核能与核技术应用发展的战略需求相比,在低水平难分析核素的高灵敏准确分析、复杂体系中核素形态的准确识别与分析、放射分析自动化、核素测量设备的自主研发等方面仍面临很多挑战。需要进一步加强特效分离材料与分析设备国产化创新、核素及其形态的原位自动化分析、放射性医药质控分析、大范围环境放射性在线监测和后处理等高辐射条件下自动化智能化分析测量系统的建设等方面研究,提高放射化学分析方法技术与分析仪器设备的自主化、自动化和智能化水平;同时需要关注放射分析化学中的基础科学问题,强化放射分析标准化技术和方法、核设施退役多维度表征技术研发,拓展其在多领域应用,推动高水平放射分析化学平台和团队建设,全面提升我国放射分析化学水平。

       

      Abstract: Radioanalytical chemistry is an important branch of analytical chemistry which deals with analysis of radionuclides and their species in various samples, including all relevant aspects: development of specific reagents and materials such as extractants and resins for separation of radionuclides and their species from various sample matrix, radiochemical separation procedures of radionuclides, sensitive measurement techniques as well as equipment and instrumental apparatus, and methods and instrument for on-line and in-situ analysis of radionuclides. For decades, radioanalytical chemistry has played an important role in the nuclear science and technology and provided powerful support for national security in China. In recent years, radioanalytical chemistry has made significant progress in China. A series of innovative achievements have been made in the synthesizing and production of special separation materials, high-sensitivity measurement methods for radionuclides, accurate analysis of radionuclides in the environment, and analytical technique and methods of radionuclides in nuclear fuel cycle industry. The professional research teams and platforms have been significantly strengthened, ensuring the fundamental research in radioanalytical chemistry. All these have provided strong support for China’s national defense and nuclear environmental safety, rapid development of the nuclear energy industry, and leap in nuclear fuel reprocessing technology. However, compared with the international advanced level and China’s strategic requirement in nuclear energy and technology development, there are still many scientific challenges in several scopes, including high-sensitivity and accurate analysis of low-level difficult-to-measure radionuclides, speciation analysis of radionuclides in complicated environment matrix, and advanced materials and equipment for radiochemical analysis. The following points should be addressed and strengthened in the future: (1) development of high performance specific separation material and apparatus; (2) in-situ analytical methods and techniques for radionuclides speciation; (3) innovative radiochemical analytical method for quality control of radiopharmaceuticals; (4) automated and intelligent radioanalytical methods and systems for large-scale environmental radioactivity monitoring and on-line analysis in spent nuclear fuel reprocessing. These efforts will certainly help to improve the level of self-reliance, automation, and intelligence of radioanalytical chemistry and instrumentation in China. Furthermore, some issues such as standardization of radioanalytical method, characterization analysis for decommission of nuclear facilities, enlarging the application of radioanalytical chemistry in new and interdisciplinary fields, and scientific research platform construction.

       

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