Microchip metal complex speciation: The nickel-bathophenanthroline disulfonic acid system

被引：9

作者：

Faure, K

Loughran, M

Glennon, JD ^{[1
]}

机构：

[1] Natl Univ Ireland Univ Coll Cork, ABCRF, Cork, Ireland

[2] Natl Univ Ireland Univ Coll Cork, Tyndall Natl Inst, Cork, Ireland

来源：

ANALYTICA CHIMICA ACTA | 2006年 / 557卷 / 1-2期

关键词：

speciation; microchip electrophoresis; stoichiometry; nickel;

D O I：

10.1016/j.aca.2005.10.057

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

This is the first reported metal complex speciation of a single metal-ligand system by microchip electrophoresis. The nickel(II)-bathophenanthroline disulfonic acid system consists of three complexes with different stoichiometries, i.e., Ni(BPS)(1), Ni(BPS)(2) and Ni(BPS)(3). These nickel complexes are readily separated by capillary electrophoresis at 30 kV, in 20 mM sodium tetraborate at pH 9.3, 214 nm UV detection. The identity of each Ni(11) complex species was confirmed by CE-ESI-MS. The three metal-complex species, in addition to the free ligand can be successfully separated on a 25 turn quartz microchip with associated UV detection. Optimal electrophoretic parameters for efficient speciation of the nickel bathophenanthroline disulphonic acid complexes were: injection 1.0 kV for 10 s, separation 1.4 kV for 13 s in 10 mM sodium tetraborate at pH 8.0, 214 nm linear imaging UV detection. The influence of electrokinetic injection on the efficiency of metal speciation was also investigated. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：130 / 136

页数：7

共 38 条

[1] *AG TECHN, 2000, HIGH PERF CAP EL INT
[2] Investigations into the catalytic activity of rhodium(III) in redox reactions by capillary zone electrophoresis
Aleksenko, SS
Gumenyuk, AP
Mushtakova, SP
Kozhina, LF
Timerbaev, AR
[J]. TALANTA, 2003, 61 (02) : 195 - 202
[3] Micro total analysis systems. 2. Analytical standard operations and applications
Auroux, PA
Iossifidis, D
Reyes, DR
Manz, A
[J]. ANALYTICAL CHEMISTRY, 2002, 74 (12) : 2637 - 2652
[4] BU M, 2005, 3 GORD C PHYS CHEM M
[5] THE DISODIUM SALT OF 1,10-PHENANTHROLINE-4,7-DIPHENYL-PARA-DISULFONIC ACID AS AN ANALYTICAL REAGENT - A SPECTROPHOTOMETRIC STUDY OF THE COMPLEXES FORMED
CABRERAMARTIN, A
GALLEGOANDREU, R
RUBIOBARROSO, S
[J]. MICROCHEMICAL JOURNAL, 1982, 27 (04) : 530 - 538
[6] CAPILLARY ELECTROPHORESIS MASS-SPECTROMETRY
CAI, JY
HENION, J
[J]. JOURNAL OF CHROMATOGRAPHY A, 1995, 703 (1-2) : 667 - 692
[7] Caroli S., 1996, ELEMENT SPECIATION B
[8] Radionuclide and metal ion detection on a capillary electrophoresis microchip using LED absorbance detection
Collins, GE
Lu, Q
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 2001, 76 (1-3) : 244 - 249
[9] Microfabricated capillary electrophoresis sensor for uranium (VI)
Collins, GE
Lu, Q
[J]. ANALYTICA CHIMICA ACTA, 2001, 436 (02) : 181 - 189
[10] COYLE CL, 1988, BIOINORGANIC CHEM NI

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