Water quality. Plutonium and neptunium. Test method using ICP-MS has-digital — support knowledge management on

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Water quality. Plutonium and neptunium. Test method using ICP-MS has-digital — support knowledge management on1 Scope This document specifies methods used to determine the concentration of plutonium and neptunium isotopes in water by inductively coupled plasma mass spectrometry (ICP MS) (239Pu, 240Pu, 241Pu and 237Np). The concentrations obtained can be converted into activity concentrations of the different isotopes[9]. Due to its relatively short half life and 238U isobaric interference, 238Pu can hardly be measured by this method. To quantify this isotope,