Chromazurol S ion-selective electrode for chelatometric titration |
| |
Authors: | Kataoka M Shin M Kambara T |
| |
Institution: | Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, Japan. |
| |
Abstract: | A liquid membrane type Chromazurol S ion-selective electrode has been constructed and applied to chelatometric titrations. In aqueous medium, zephiramine (benzyldimethyltetradecylammonium chloride) forms with the anion of Chromazurol S an ion-pair which is easily extracted into nitrobenzene. The extract is used as the liquid ion-exchanger for the Chromazurol S ion-selective electrode. The most suitable ion-pair concentration in the liquid ion-exchanger membrane is 10(-4)M. The linear Nernstian-response range of the Chromazurol S anion in aqueous solution is 10(-2)-10(-6)M. The electrode has been successfully applied to the chelatometric titration of Cu(II), Ni(II), Fe(III) and Pb(II) with EDTA. |
| |
Keywords: | |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|