Thumbnail
Access Restriction
Open

Author Katano, Hajime ♦ Tanaka, Kotaro ♦ Senda, Mitsugi
Source J-STAGE
Content type Text
Publisher The Japan Society for Analytical Chemistry
Language English
Subject Keyword Formation constant ♦ rate constant ♦ complex ion ♦ ion-transfer voltammetry ♦ facilitated transfer
Abstract Ion-transfer voltammetry of the facilitated transfer of $Pb^{2+}$ ion by 1, 4, 7, 10, 13, 16-hexathiacyclooctadecane across the polarizable nitrobenzene/water interface has been applied to the study of complexes of $Pb^{2+}$ ion with hydrophilic ligands, $acetate^{-},$ $tartarate^{2-},$ and $citrate^{3-}$ ions in aqueous media. The formal formation constants of 1:1, 1:2, and 1:3 $Pb^{2+}-acetate^{-}$ complexes were determined to be $10^{2.3}M^{-1},$ $10^{3.0}M^{-2},$ and $10^{4.0}M^{-3}.$ The dissociation and association rate constants were determined to be $2.1×10^{3}s^{-1}and$ $2.2×10^{7}$ $M^{-1}$ $s^{-1}$ for 1:1 $Pb^{2+}$ $-tartarate^{2-}$ complex and $4.5×10^{4}s^{-1}$ and $8.O×10^{10}M^{-1}$ $s^{-1}$ for 1:1 $Pb^{2+}$ $-citrate^{3-}$ complex, respectively.
ISSN 09106340
Learning Resource Type Article
Publisher Date 1997-01-01
e-ISSN 13482246
Journal Analytical Sciences(analsci1985)
Volume Number 13
Issue Number Supplement
Page Count 2
Starting Page 299
Ending Page 300


Open content in new tab

   Open content in new tab