Dounreay hot particles: the story so far
Dounreay hot particles: the story so far
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唐雷热粒子：到目前为止的故事
DOI：
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发表时间：
2007
影响因子：
1.5
通讯作者：
F. Henderson
中科院分区：
文献类型：
--
作者：
F. Dennis;G. Morgan;F. Henderson
第一个被正式确认的敦雷热粒子（以下简称“粒子”）是在1983年从敦雷前滨发现的。第二年，又在桑德赛德海滩发现了一个单独的颗粒。自1984年以来，定期从Dounreay前滨和1997年以来的近海沉积物中检测和去除颗粒。自1997年以来，开展了一项广泛的研究和开发方案，以确定微粒的来源、它们在海洋环境中的移动和寿命，以及它们对人类和环境健康的潜在影响。现在已知的是，这些粒子是在20世纪60年代中后期和70年代初被释放到北大西洋的。目前没有证据表明Dounreay站点存在持续的粒子源。从Dounreay前滨和当地海滩回收的颗粒来源是目前存在于Dounreay附近海洋沉积物中的该高速缓存。监测和沉积物建模研究表明，Dounreay颗粒大致平行于海岸向东北方向输送。定义接触频率和人类健康风险的研究表明，与颗粒物相关的健康风险非常低。UKAEA将通过与所有利益相关者协商，制定最佳实用环境选择（BPEO），以确定长期的颗粒物管理计划。
The first Dounreay hot particle (hereafter ‘Particle’) to be formally identified was recovered from the Dounreay foreshore in 1983. A further single Particle was recovered from Sandside beach the following year. Particles have been detected and removed from the Dounreay foreshore regularly since 1984 and from the offshore sediments since 1997. Since 1997, an extensive research and development programme has been undertaken to identify the source of Particles, their movement and lifetimes in the marine environment, and their potential effects on human and environmental health. It is now known that Particles were released to the North Atlantic Ocean in the mid to late 1960s and early 1970s. There is no evidence of an on-going source of Particles from the Dounreay site today. The source of Particles recovered from the Dounreay foreshore and from local beaches is the cache currently residing in marine sediments adjacent to Dounreay. Monitoring and sediment modelling studies indicate that the Dounreay Particles are transported approximately parallel to the coast in a north-easterly direction. Studies to define contact frequencies and risks to human health suggest that the health risks associated with Particles are very low There is, however, a significant perception of risk. UKAEA will define a long-term Particle management programme via the development of a best practical environmental option (BPEO) facilitated through consultation with all stakeholders.