半微分循环伏安法对离子在油水界面传递的研究——18—冠—6推动下钠离子的传递

INVESTIGATION ON THE ION TRANSFER H_2O/PHNO_2 INTERFACE USING SEMI-DIFFERENTIAL CYCLIC VOLTAMMETRY Sodium Ion Transfer Facilitated By 18-Crown-6

本文提出用半微分循环伏安法研究油/水界面上的电化学现象,对于体系NaCl,18-C-6(W)—TBATPB(nb),推导出了半微分峰电流e_ρ、半波电势△_w^(n b) ψ1╱2的计算公式。e_ρ与水相中18-C-6的浓度成正比,据此可对18-C-6进行定量分析,线性范围1.5×10^(-3)mol/L—5.0×10^(-5)mol/L。

The electrochemical Phenomena of Sodium ion transfer across H_2O/PhNO_2 interface facilitated by 18-C-6 in aqueous phase have been studied by using semi-differential cyclic voltammetryo The expressions of peak current e_(pc) and of half-wave potenital in the system of NaC1, 18-C-6(w)-TBATPB (nb) are derived. The experimental results were in keeping with the theoretieal expressions, e_(pc) and c_(pa) were directly proportional to the concentration of 18-C-6 in the range of 1.5×10^(-3)-5.0×10^(-5)mol/L. This method can be used in analysis of 18-C-6(w).