title: Determination of the absolute mobility and the equivalent ionic conductivity of NpO2+ at 25 degrees C and at infinite dilution by capillary electrophoresis-inductively coupled plasma-mass spectrometry.
abstract: The absolute mobility of NpO2+ and its equivalent ionic conductivity were extrapolated at 25 degrees C and at infinite dilution using a set of experimental data obtained at various ionic strengths. The separation was carried out by capillary electrophoresis (CE) at various concentrations of creatinine at a pH of 5. The detection of NpO2+ was performed by inductively coupled plasma mass spectrometry coupled on-line with CE. The following values have been found: mu0NpO2+ (25 degrees C) = (2.94 +/- 0.07) x 10(-4) cm2 V(-1) s(-1) and lambda0NpO2+ (x 10(4), 25 degrees C) = 28.3 +/- 0.7 m2 S mol(-1).
authors.affiliation: CEA, DASE/RCE, BP 12, 91680 Bruyères-le-Châtel, France. jean.aupiais@cea.fr
authors.forename: J
authors.initials: J
authors.lastname: Aupiais
authors.forename: A
authors.initials: A
authors.lastname: Delorme
authors.forename: N
authors.initials: N
authors.lastname: Baglan
mesh_terms: D019075:Electrophoresis, Capillary / Q000379:methods*; D013058:Mass Spectrometry / Q000379:methods*; D009405:Neptunium / Q000737:chemistry*; D009994:Osmolar Concentration
chemical_list: D009405:Neptunium