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