SPECIATION OF ALUMINUM USING CAPILLARY ZONE ELECTROPHORESIS WITH INDIRECT UV DETECTION

被引：57

作者：

WU, N ^{[1
]}

HORVATH, WJ ^{[1
]}

SUN, P ^{[1
]}

HUIE, CW ^{[1
]}

机构：

[1] SUNY BINGHAMTON,DEPT CHEM,POB 6000,BINGHAMTON,NY 13902

来源：

JOURNAL OF CHROMATOGRAPHY | 1993年 / 635卷 / 02期

关键词：

D O I：

10.1016/0021-9673(93)80373-G

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Capillary zone electrophoresis was evaluated as a method for the speciation of aluminum in aqueous solution using indirect UV absorption detection. Fluoro- and oxalatoaluminum complexes appeared as sharp and well-defined peaks within the electropherogram of aluminum standard solutions when the appropriate ligand was added. Simultaneous separation of these inorganic and organic aluminum species was achieved with good resolution in a single analytical run within 5 min. Indirect UV detection was achieved at 214 nm with a background electrolyte buffer containing 5 mM imidazole. The average limit of detection was about 10 nM for uncomplexed and complexed aluminum species. Excellent agreement between experimental and theoretical species concentrations (via the thermodynamic speciation model SOILCHEM) was obtained for solutions with varying ligand/aluminum mol ratios and pH values.

引用

页码：307 / 312

页数：6

共 19 条

[1] LIPID BILAYER PERMEATION BY NEUTRAL ALUMINUM CITRATE AND BY 3 ALPHA-HYDROXY CARBOXYLIC-ACIDS [J].