W. Szczepaniak, M. Ren
Dec 1, 1983
Citations
1
Influential Citations
16
Citations
Journal
Talanta
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 Bi(3+). 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 (K(Bi(3+)+,(M(2+)))<10(-5)). The dissociation constant of bismuth acetate has been determined with the aid of the electrode.