Cl-36 behaviour in the soil-plant system: implications for long-term dose assessment
Cl-36 is an important contributor to potential radiation doses in the long term, potentially arising from release into the biosphere from radioactive waste disposal facilities. Its special attributes include its long half-life, high mobility in many environmental conditions, and potentially high uptake into plants and hence accumulation in the food-chain. Review of the assumptions in repository safety assessments has shown very wide ranges in values of Cl-36 transfer parameters commonly employed in models used for long term dose assessment and in associated calculation results. Uncertainties arise partly because of short term variations in chlorine behaviour in soils and uptake into growing plants which are dependent upon the recent water balance history. This paper reviews recent experiments and measurement programmes for the behaviour of Cl-36 and stable chlorine and examines the application of this new data in the development of improved models for long-term dose assessment. It is based on the output of a special Cl-36 workshop held in 2006 and work being carried out in response to the issues identified.
radioactive waste Cl-36 dose assessment speciation.
E Leclerc G Smith
French National Agency for Radioactive Waste Management (ANDRA), France, Elisabeth Enviros Consulting Ltd, UK
国际会议
第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)
北京
英文
412-413
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）