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Xu, N.; Tandon, L.; Gallimore, D.; Lujan, E.; Porterfield, D. R.; Colletti, L.; Kuhn, K.
Journal of radioanalytical and nuclear chemistry, 04/2013, Letnik: 296, Številka: 1Journal Article
A case study for dissolution and assay of neptunium oxide is presented in this paper. A simple analytical method for completely dissolving neptunium oxide is described. Addition of 12 M HNO 3 is sufficient to dissolve neptunium oxide without precipitate formation. Various analytical chemistry methods were evaluated for neptunium assay including controlled potential coulometry, gas proportional counting/alpha spectrometry, gamma spectrometry using a high purity germanium detector, inductively coupled plasma-mass spectrometry, and isotope dilution-inductively coupled plasma-mass spectrometry. The precision and uncertainty of each analytical method is discussed.
