title: Determination of neptunium in environmental samples by extraction chromatography after valence adjustment.
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.
authors.affiliation: Laboratoire de radioécologie, Département de chimie, Université Laval, 1045 Avenue de la Médecine, Québec, QC, Canada G1V 0A6. Nicolas.guerin.1@ulaval.ca
authors.forename: Nicolas
authors.initials: N
authors.lastname: Guérin
authors.forename: Marc-Antoine
authors.initials: MA
authors.lastname: Langevin
authors.forename: Kenny
authors.initials: K
authors.lastname: Nadeau
authors.forename: Charles
authors.initials: C
authors.lastname: Labrecque
authors.forename: Alexandre
authors.initials: A
authors.lastname: Gagné
authors.forename: Dominic
authors.initials: D
authors.lastname: Larivière
mesh_terms: D002845:Chromatography / Q000379:methods*; D013058:Mass Spectrometry; D009405:Neptunium / Q000032:analysis*
chemical_list: D009405:Neptunium