DETERMINATION OF METAL-IONS BY CAPILLARY ELECTROPHORESIS USING ON-COLUMN COMPLEXATION WITH 4-(2-PYRIDYLAZO) RESORCINOL FOLLOWING TRACE ENRICHMENT BY PEAK STACKING

被引：63

作者：

REGAN, FB

MEANEY, MP

LUNTE, SM

机构：

[1] UNIV KANSAS,CTR BIOANALYT RES,LAWRENCE,KS 66047

[2] DUBLIN CITY UNIV,SCH CHEM SCI,DUBLIN 9,IRELAND

来源：

JOURNAL OF CHROMATOGRAPHY B-BIOMEDICAL APPLICATIONS | 1994年 / 657卷 / 02期

关键词：

D O I：

10.1016/0378-4347(94)00098-0

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Co2+, Fe2+, Cu2+ and Zn2+ were separated and detected following derivatization with 4-(2-pyridylazo)resorcinol by capillary electrophoresis with UV-Vis detection. Parameters which were examined include both on-column and pre-column complexation, limit of detection, capillary loadability, linear dynamic range and reproducibility. A sample stacking technique was investigated in order to obtain better detection limits and greater sensitivity. Detection limits of 1.10(-8) M were achieved for Co2+, Fe2+ and Zn2+ and 4.10(-7) M for CU2+. Mass detection limits were 0.2 fmol for Co2+, Fe2+ and Zn2+ and 7.0 fmol for CU2+ The use of this method for the determination of metals in vitamin tablets and a pond water sample is presented.

引用

页码：409 / 417

页数：9

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