Determination of neptunium in environmental samples by extraction chromatography after valence adjustment |
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| Authors: | Nicolas Guérin Marc-Antoine Langevin Kenny Nadeau Charles Labrecque Alexandre Gagné Dominic Larivière |
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| Institution: | 1. Xi’an Accelerator Mass Spectrometry Center, State Key Laboratory of Quaternary Geology, Shaanxi Key Laboratory of Accelerator Mass Spectrometry Technology and Application, Institute of Earth Environment, Chinese Academy of Sciences, Xi’ an 710061, China;2. Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xi’ an 710061, China;3. Open Studio for Oceanic-Continental Climate and Environment Changes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266061, China;4. University of Chinese Academy of Sciences, Beijing 100049, China;1. Centro de Investigación Tecnología e Innovación, Universidad de Sevilla (CITIUS), Av. Reina Mercedes 4B, 41012 Sevilla, Spain;2. Dpto. Física Aplicada II, ETSIE, Av. Reina Mercedes 4A, Universidad de Sevilla, 41012 Sevilla, Spain;3. Dpto. Física Aplicada I, Escuela Universitaria Politécnica, Universidad de Sevilla, Spain;4. Instituto Ciencia de los Materiales de Sevilla, CSIC-Universidad de Sevilla, Avda, Américo Vespucio, 49, Sevilla, Spain |
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| Abstract: | Neptunium(V) ions are unstable in acid media, which limits their extraction on chromatographic resins. We developed a novel analytical method to measure Np by either α-spectrometry or inductively coupled plasma mass spectrometry (ICP-MS) after extraction chromatography as Np(VI). We investigated the reactivity of various oxidizing reagents, and determined the retention capacity of Np(IV, V, and VI) on various extraction chromatographic supports. A simple method using two UTEVA resins was used to rapidly detect Np in soil and sediment samples. |
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