Development of novel microfluidics systems for radionuclide detection

开发用于放射性核素检测的新型微流体系统

• 批准号: 1940684
• 金额: --
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1940684
• 关键词: Development; novel; microfluidics; systems; radionuclide

Robust assessment of radionuclide distribution and dispersion is fundamental to environmental process studies, routine and post-accident environmental monitoring, industrial facility monitoring and process control. Such assessments have generally relied on sampling and laboratory analysis, limiting the spatial resolution achievable and resulting in delays in data availability. In-situ techniques can provide real time data and temporal trending with significantly improved spatial resolution, particularly if the detection system is combined with a mobile platform. Remote detection also provides benefits in minimizing operator exposure to radiation, particularly important in post-accident scenarios or monitoring of high radiation dose environments such as nuclear or oil / gas facilities. Existing in-situ techniques have focused on measurement of gamma emitting radionuclides which are relatively easy to detect. Pure beta and alpha emitting radionuclides, such as 90Sr and Pu, pose a significant technical challenge. Microfluidics coupled with on-line preconcentration strategies can provide a highly flexible, sensitive platform which can be developed to measure a wide range of beta and alpha emitting radionuclides. Such systems offer the potential for integration into autonomous vehicles, providing significant improvements in spatial resolution and real-time mapping of radionuclide dispersion in the marine environment as well as offering attractive capability for nuclear site decommissioning surveys (pipelines, storage tanks etc). Additionally, such platforms can be integrated into automated control systems providing improved process monitoring and control for reactor operation and waste management.

放射性核素分布和弥散的可靠评估对于环境过程研究、常规和事故后环境监测、工业设施监测和过程控制至关重要。这种评估一般依赖于取样和实验室分析，限制了可实现的空间分辨率，并导致数据提供方面的延误。现场技术可以提供具有显著提高的空间分辨率的真实的时间数据和时间趋势，特别是如果检测系统与移动的平台组合。远程检测还提供了使操作员暴露于辐射最小化的益处，这在事故后场景或监测高辐射剂量环境（诸如核或石油/天然气设施）中特别重要。现有的现场技术集中于测量相对容易检测的伽马发射放射性核素。纯β和α放射性核素，如90 Sr和Pu，构成了重大的技术挑战。微流控技术与在线预浓缩策略相结合，可以提供一个高度灵活、灵敏的平台，可以开发用于测量广泛的β和α发射放射性核素。这种系统有可能集成到自动驾驶车辆中，大大提高空间分辨率，实时绘制放射性核素在海洋环境中的分布图，并为核设施退役调查（管道、储罐等）提供有吸引力的能力。此外，这种平台可以集成到自动化控制系统中，为反应器操作和废物管理提供改进的过程监测和控制。