Separation of anionic chloro complexes by capillary tube isotachophoresis in non-aqueous systems

✍ Scribed by Yuji Hirama; Hitoshi Yoshida

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 657 KB
• Volume: 322
• Category: Article
• ISSN: 1873-3778
• DOI: 10.1016/s0021-9673(01)97666-6

✦ Synopsis

A method for the separation of anionic chloro complexes by capillary tube isotachophoresis using dimethylformamide is described. ClO,, Cl-and H+ are used as the leading ion, terminating ion and counter ion, respectively. The order of effective mobilities of the chloro complexes is Fe(II1) > Hg(II) > Cd(I1) > Zn(II) > Co(I1) > Pb(I1) > Mn(II), which follows the order of the stability constants. The migration mechanism of the chloro complexes is explained on the basis of the complex-forming equilibria involved. In this system, the terminating zone acts as a sup plier of chloride and hydrogen ion from the leading zone induces the dissociation of the chloro complexes.