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KMID : 0385519960090010035
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Analytical Science & Technology
1996 Volume.9 No. 1 p.35 ~ p.42
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Effect of Coexisting Ions on Electrokinetic injection in Capillary Electrophoresis Analysis
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이광우/Lee, Kwang-Woo
전지영/이광필/Jeon, Ji-Young/Lee, Kwang-Pill
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Abstract
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A rapid analytical method based on capillary electrophoresis isdescribed for the determination of trace anions in high-purity chemicals which is used to prevent corrosion demage in nuclear power plants.
Separations are carried out at 2OkV using., trimethylsilane- coated fused-silica capillary (70cmx50 or 75/,m i.d.) with the electrolyte of 5mM Chromate(pH=8). Detection was achieved using on-column indirect photometry at 254nm. The simultaneous analysis of inorganic anionschloride, nitrate, sulfate, azide and phosphate was performed using methods of hydrodynamic(>lppm) and/or electrokinetic(The results of studies on the coexisting anions on analyte ions shows that peak responses of analyte in hydrodynamic injection is constant without effect of coexisting anions, but aology
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