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author:

Xu, XQ (Xu, XQ.) [1] (Scholars:许雪琴) | Ye, HZ (Ye, HZ.) [2] | Wang, W (Wang, W.) [3] (Scholars:王伟) | Yu, LS (Yu, LS.) [4] | Chen, GN (Chen, GN.) [5] (Scholars:陈国南)

Indexed by:

EI Scopus SCIE

Abstract:

Four flavonoids (rutin, hyperoside, quercitrin and quercetin) in Houttuynia cordata Thunb. and Sat(runts chinensis (Lour.) Bail. were determined by capillary electrophoresis with wall-Jet amperometric detection. The working electrode was a 500 mu m diameter carbon disc electrode and the detection potential was +0.95 V (versus Ag/AgCl. Effects of several important factor., Such as the running buffer and its corresponding pH and concentration, separation voltage, injection time were investigated to acquire the Optimum conditions for separation of these four flavonoids. Baseline separation for the four flavonoids was obtained within 2 1 min in a 60 cm length capillary at a separation voltage of 15 kV with a 60 mmoL/L Na2B4O7-120 mmoL/L NaH2PO4 buffer (pH 8.8) as running buffer. The relationship between peak currents and analyte concentrations was linear over about two orders of magnitude with detection limits (defined as S/N = 3) ranging from 0.02 to 0.05 mu g/mL for all analytes. This method was applied for the determination of the above four flavonoids in H. cordata Thunb. and S. chinensis (Lour.) Bail. with simple extraction procedures, and the assay results were satisfactory. (c) 2005 Elsevier B.V. All rights reserved.

Keyword:

capillary electrophoresis electrochemical detection flavonoids Houttuynia cordata Thunb. Saururus chinensis (Lour.) Bail.

Community:

  • [ 1 ] Fuzhou Univ, Dept Chem, Fujian 350002, Peoples R China
  • [ 2 ] Fujian Coll Tradit Chinese Med, Cent Lab, Fujian 350002, Peoples R China

Reprint 's Address:

  • 陈国南

    [Chen, GN]Fuzhou Univ, Dept Chem, Fujian 350002, Peoples R China

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Source :

TALANTA

ISSN: 0039-9140

Year: 2006

Issue: 3

Volume: 68

Page: 759-764

2 . 8 1

JCR@2006

5 . 6 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 58

SCOPUS Cited Count: 74

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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