Liquid-state membrane electrode sensitive to bismuth(III) |
| |
Authors: | Szczepaniak W Ren M |
| |
Institution: | Faculty of Chemistry, A. Mickiewicz University, 60-780 Poznań, ul. Grunwaldzka 6, Poland. |
| |
Abstract: | A liquid ion-exchange electrode containing a tetrachloraethane solution of the complex of bismuth(III) with 5-mercapto-3-(naphthyl-1)-1,3,4-thiadiazol-2-thione is described. The electrode is sensitive to Bi3+. The slope of the calibration graph (electrode potential vs. concentration) is 18.7 mV/pBi in the pBi range 6.5–9.5 in ammonium acetate buffer (pH = 4.0). Bivalent cations and Al(III), Fe(III) and Th(IV) do not interfere (KBi3++,M2+<10−5). The dissociation constant of bismuth acetate has been determined with the aid of the electrode. |
| |
Keywords: | |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|