Development of fast analytical procedures capable of giving a response with respect to the type of contamination - alpha - emitting radionuclides (such U, Pu, Th, Cm isotopes) and taking into account the specific requirements for rapid measurements (i.e. accuracy, detection limit, throughput time, waste management, etc.) = fit-for-purpose.
To obtain sample material appropriate for alpha spectrometry, leaching is proposed. A first step will be to set-up leaching experiments using spiked soil and plant material. Different parameters will be investigated in order to obtain a good recovery of the tracers used in the spiking (such as mixing time, molar concentration of the acid, type of the acid, etc.).
Second step consists in investigating the separation and source preparation procedures and their compatibility with the field conditions.
Third step is related to the investigation of the measurement equipment and the way that this can be made available in the field (e.g. design of the set-up).
These methods are meant to be used in an ‘on-site’ measurement laboratory or intervention vehicle for alpha emitter radionuclides using validated working procedures. Initial experimental tests will be performed in our laboratories using existing equipment (alpha-particle spectrometry).
1. Goudeau,V. et al., 2017. Mobile laboratories: An innovative and efficient solution for radiological characterization of sites under or after decommissioning. Journal of Environmental Radioactivity, https://doi.org/10.1016/j.jenvrad.2017.04.010.