TY - JOUR
T1 - Dissociation kinetic analysis of Ce(III) complex with quin2 by microchip capillary electrophoretic reactor
AU - Ohtsukak, Kei ichirou
AU - Iki, Nobuhiko
AU - Hoshino, Hitoshi
AU - Takahashi, Toru
PY - 2013
Y1 - 2013
N2 - Dissociation kinetic analysis of a complex of Ce3+ with a polyaminocarboxylic ligand, 8-amino-2-[(2-amino-5- methylphenoxyl)methyl]-6-methoxyquinoline-N,N,N',N',-tetraacetic acid (Quin2), was studied by microchip capillary electrophoretic reactor. Dissociationrate constants, kd, of Ce3+-Quin2 complex in alkaline conditions at pH 8.3 . 9.8 were determined. The linear relationship of kd with the concentration of hydroxide ion indicates the existence of a hydroxide ion-assisted path in the dissociation reaction of Ce3+-Quin2complex in alkaline conditions. The solvolytic dissociationrate constant, and the hydroxide ion-assisted dissociation rate constant of Ce3+-Quin2 complex were determined to be 1.55 × 10.3 and 3.24 × 102 s-1 in the analysis of the dependence of kd with the concentration of hydroxide ion, respectively.
AB - Dissociation kinetic analysis of a complex of Ce3+ with a polyaminocarboxylic ligand, 8-amino-2-[(2-amino-5- methylphenoxyl)methyl]-6-methoxyquinoline-N,N,N',N',-tetraacetic acid (Quin2), was studied by microchip capillary electrophoretic reactor. Dissociationrate constants, kd, of Ce3+-Quin2 complex in alkaline conditions at pH 8.3 . 9.8 were determined. The linear relationship of kd with the concentration of hydroxide ion indicates the existence of a hydroxide ion-assisted path in the dissociation reaction of Ce3+-Quin2complex in alkaline conditions. The solvolytic dissociationrate constant, and the hydroxide ion-assisted dissociation rate constant of Ce3+-Quin2 complex were determined to be 1.55 × 10.3 and 3.24 × 102 s-1 in the analysis of the dependence of kd with the concentration of hydroxide ion, respectively.
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U2 - 10.2116/analsci.29.553
DO - 10.2116/analsci.29.553
M3 - Article
AN - SCOPUS:84878345770
VL - 29
SP - 553
EP - 557
JO - Analytical Sciences
JF - Analytical Sciences
SN - 0910-6340
IS - 5
ER -