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Direct, remote, and simultaneous determination of uranium and plutonium in eight different media by optical absorptometry using nonimmersed optical fibre sensors

Molecular absorptiometry is a fast, selective and sensitive method for the determination of the most part of lanthanides and actinides ions. Separation steps of uranium, plutonium, and fission products on the nuclear fuel reprocessing are realised by a liquid-liquid extraction using pulsed columns. Kinetics are slow enough to allow the process to be controlled by liquid chromatography analyses.