Katano Hajime, Tatsumi Hirosuke, Senda Mitsugi
Department of Bioscience, Fukui Prefectural University, Matsuoka-cho, Fukui 910-1195, Japan.
Talanta. 2004 May 10;63(1):185-93. doi: 10.1016/j.talanta.2003.10.044.
The usefulness of 1,6-dichlorohexane (1,6-DCH) and 1,4-dichlorobutane (1,4-DCB) as organic solvent (O) for ion-transfer voltammetry at O|water (W) interface has been examined, and the results are compared with those with 1,2-dichloroethane (1,2-DCE). The width of potential window of the 0.1M tetraoctylammonium tetrakis(4-chlorophenyl)borate (O)|0.05M Li(2)SO(4) (W) interface increased in the sequence: O = 1,6-DCH > 1,4-DCB > 1,2-DCE. The voltammetric behavior of the transfer of various cations and anions at the 1,6-DCH|W and 1,4-DCB|W interfaces has been shown to be of reversible nature, and the midpoint potentials or the reversible half-wave potentials have been determined. The midpoint potentials of hydrophilic ions have also been determined by the analysis of anodic final rise or cathodic final decent of the voltammograms with the O|W interfaces, where the W contains a salt of the hydrophilic ion. Also, the effect of ion-pair formation in O on the midpoint potentials has also been discussed.
研究了1,6 - 二氯己烷（1,6 - DCH）和1,4 - 二氯丁烷（1,4 - DCB）作为有机溶剂（O）用于O|水（W）界面离子转移伏安法的适用性，并将结果与使用1,2 - 二氯乙烷（1,2 - DCE）时的结果进行比较。0.1M四辛基铵四（4 - 氯苯基）硼酸盐（O）|0.05M硫酸锂（W）界面的电位窗口宽度按以下顺序增加：O = 1,6 - DCH > 1,4 - DCB > 1,2 - DCE。已表明各种阳离子和阴离子在1,6 - DCH|W和1,4 - DCB|W界面转移的伏安行为具有可逆性质，并已确定了中点电位或可逆半波电位。亲水性离子的中点电位也通过分析含有亲水性离子盐的W的O|W界面伏安图的阳极最终上升或阴极最终下降来确定。此外，还讨论了O中离子对形成对中点电位的影响。
