Sample stacking using field-amplified sample injection in capillary zone electrophoresis in the analysis of phenolic compounds

被引：40

作者：

Martinez, D ^{[1
]}

Borrull, F ^{[1
]}

Calull, M ^{[1
]}

机构：

[1] UNIV ROVIRA & VIRGILI,DEPT QUIM ANALIT & QUIM ORGAN,TARRAGONA 43005,SPAIN

来源：

JOURNAL OF CHROMATOGRAPHY A | 1997年 / 788卷 / 1-2期

关键词：

field-amplified injection; injection methods; phenols;

D O I：

10.1016/S0021-9673(97)00712-7

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

This paper discusses a simple on-column concentration with a field-amplified injection technique, using eleven US Environmental Protection Agency (EPA) priority phenols as model compounds. The capillary dimensions (length and internal diameter) for enhancing the on-column enrichment for phenolic compounds are studied. Under the proposed operational conditions, the detection limits (SIN=3) were in the ppb range, and the relative standard deviations for the compounds were between 1.4 and 8.8%. Field-amplified injections are preferred to off-line preconcentration methods because of their simplicity, rapidity and high enrichment factors. (C) 1997 Elsevier Science B.V.

引用

页码：185 / 193

页数：9

共 14 条

[1]

BARCELO D, 1993, TECHNIQUES INSTRUMEN, V13

[2] FIELD AMPLIFIED SAMPLE INJECTION IN HIGH-PERFORMANCE CAPILLARY ELECTROPHORESIS [J].

CHIEN, RL ;

BURGI, DS .

JOURNAL OF CHROMATOGRAPHY, 1991, 559 (1-2) :141-152

[3] SAMPLE STACKING OF AN EXTREMELY LARGE INJECTION VOLUME IN HIGH-PERFORMANCE CAPILLARY ELECTROPHORESIS [J].

CHIEN, RL ;

BURGI, DS .

ANALYTICAL CHEMISTRY, 1992, 64 (09) :1046-1050

[4] FIELD-AMPLIFIED POLARITY-SWITCHING SAMPLE INJECTION IN HIGH-PERFORMANCE CAPILLARY ELECTROPHORESIS [J].

CHIEN, RL ;

BURGI, DS .

JOURNAL OF CHROMATOGRAPHY, 1991, 559 (1-2) :153-161

[5] ON-COLUMN SAMPLE CONCENTRATION USING FIELD AMPLIFICATION IN CZE [J].

CHIEN, RL ;

BURGI, DS .

ANALYTICAL CHEMISTRY, 1992, 64 (08) :A489-A496

[6] OPTIMIZATION OF DETECTION SENSITIVITY IN THE CAPILLARY ELECTROPHORESIS OF INORGANIC ANIONS [J].

JANDIK, P ;

JONES, WR .

JOURNAL OF CHROMATOGRAPHY, 1991, 546 (1-2) :431-443

[7] ONLINE COUPLING OF CAPILLARY ISOTACHOPHORESIS WITH CAPILLARY ZONE ELECTROPHORESIS [J].

KANIANSKY, D ;

MARAK, J .

JOURNAL OF CHROMATOGRAPHY, 1990, 498 (01) :191-204

[8]

KUNN R, 1993, CAPILLARY ELECT PRIN

[9] Comparative study of the use of high-performance liquid chromatography and capillary electrophoresis for determination of phenolic compounds in water samples [J].

Martinez, D ;

Pocurull, E ;

Marce, RM ;

Borrull, F ;

Calull, M .

CHROMATOGRAPHIA, 1996, 43 (11-12) :619-624

[10]

MARTINEZ D, 1996, J CHROMATOGR A, V734, P387

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