Tsuda T, Kitagawa S, Ono T, Maeda M
Department of Applied Chemistry, Nagoya Institute of Technology, Japan.
J Capillary Electrophor. 1997 May-Jun;4(3):113-6.
The novel, modified instrumentation of a capillary zone electrophoresis (CZE) system and theory are proposed for the measurement of diffusion coefficient. The solute zone in capillary tubing is forced back and forth repeatedly by the aid of negative and positive applied high voltage, respectively, and the peak widths are recorded for the estimation of diffusion coefficient. The diffusion coefficients of Ce(III) and Cu(II) in aqueous solution were determined, and the former hydration number of Ce(III) was estimated by comparison with both diffusion coefficients.
本文提出了一种用于测量扩散系数的新型毛细管区带电泳（CZE）系统的改进仪器及理论。借助分别施加的负高压和正高压，使毛细管中的溶质区反复前后移动，并记录峰宽以估算扩散系数。测定了水溶液中Ce(III)和Cu(II)的扩散系数，并通过与两种扩散系数进行比较来估算Ce(III)的前水化数。
