The interaction of Np(V) with all isomers of pyridinemonocarboxylic acid has been investigated, stability constants have been calculated using NIR spectroscopy...
Keywords: Neptunium, Crystal structure, Stability constant, Complexation, Spectrophotometry
02/2006 | Radiochimica Acta, Oldenbourg WissenschaftsverlagThe thermodynamic parameters of formation of the o-silicate complexes of UO22+, Cm3+ and Eu3+ have been measured in the temperature range 5−45 °C in an aqueous medium of 0.20 M NaClO4) ionic strength...
Keywords: Thermodynamics, Silicate, Complexation, Stability constant, Solvent extraction
02/2006 | Radiochimica Acta, Oldenbourg WissenschaftsverlagThermodynamic properties of the protonation of D-gluconic acid (HGH4(aq)) and its complexation with Np(V) have been studied in acidic to nearly neutral solutions at t =25 °C and I=1 M NaClO4 by potentiometry, spectrophotometry and calorimetry...
Keywords: Gluconic acid, Neptunium, Complexation, Stability constant, Enthalpy
09/2006 | Radiochimica Acta, Oldenbourg WissenschaftsverlagFrom extraction experiments with 22Na as a tracer, the extraction constant corresponding to the equilibrium Na+(aq) + A-(aq) + L(nb) ↔ NaL+(nb) + A-(nb) taking place in the two-phase water–nitrobenzene system [A- = picrate, L = p-tert -butylcalix[4]arene-tetrakis(N,N-diethylacetamide); aq = aqueous phase, nb = nitrobenzene phase] was evaluated as log Kex(NaL+, A-) = 4.6± 0.1...
Keywords: Sodium Picrate, Calix[4]arene Compound, Extraction, Water–Nitrobenzene System, Stability constant
12/2006 | Zeitschrift für Physikalische Chemie, Oldenbourg Wissenschaftsverlag