Dimerisation of uranyl nitrate complexes in trialkylphosphate solutions

Determination of mass transfer coefficients of 99Tc(VII) in forward and backward transport in PUREX-relevant systems by using analytical ultracentrifugation

“…A similar change of ionic properties, namely that of ion mobility in dilute aqueous electrolyte solutions is also considered to result from hydration and solution structural changes [7]. The difference between D-value dependencies in aqueous and organic solutions was discussed taking into account the absence of longranging electrostatic interactions in the latter ones [8,9].…”

“…The Schlieren peak sign is related to the sign of the refractive index change and Brought to you by | New York University Bobst Library Technical Services Authenticated Download Date | 5/28/15 2:06 PM thus to the molecular structure in the solution [9,16]. As another measurable quantity also the viscosity reflects the solution structure and has been shown to increase [17,18] with increasing degree of solute-solute interactions (e.g.…”

“…For structure-breakers, the 'viscosity B' term in the Jones-Dole equation [20] is negative and both the viscosity quotient and the density coefficient decrease with the concentration; the structure becomes less ordered. In the system TBP/dodecane (30/70), U(VI) acts as structure-maker which is reflected by an increased viscosity [8,9,17,21]. The solution structure consists of hydrogen bonds between TBP, its complex, and HNO 3 .…”