• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
成果搜索

author:

Wang, W (Wang, W.) [1] (Scholars:王伟) | Qiu, B (Qiu, B.) [2] (Scholars:邱彬) | Xu, XQ (Xu, XQ.) [3] (Scholars:许雪琴) | Zhang, L (Zhang, L.) [4] (Scholars:张兰) | Chen, GN (Chen, GN.) [5] (Scholars:陈国南)

Indexed by:

Scopus SCIE

Abstract:

A high-performance method of capillary micellar electrokinetic chromatography (CMEKC) with amperometric detection (AD), using a newly designed pre-aligned electrochemical cell, has been developed for the separation and determination of L-tryptophan (Trp) and its eight metabolites including 3-hydroXy-(L)-kynurenine (3-HK), 5-hydroXy-(L)-tryptophan (5-HTP), (L)-kynurenine (KN), 5-hydroxyindole-3-acetic acid (5-HIAA), xanthurenic acid (XA), indole-3-pyruvic acid (IPA), 5-hydroxytryptamine (5-H-0), and tryptamine (Tryp). A carbon disk electrode was used as the working electrode and the optimal detection potential was 0.85 V (versus Ag/AgCl). At 24 kV of applied voltage, the nine compounds were completely separated, within 23 min, in a 10mol/LNa2HPO4-NaOH buffer(pH 11.0) containing 40 mmol/L sodium dodecyl sulfate (SIDS) and 3% methanol (v/v). A good linear relationship was obtained for all analytes in this paper and the detection limits of 3-HK, 5-HTP, KN, Trp, 5-HIAA, XA, IPA, 5-HT, and Tryp were 7.42, 5.18, 34.6, 3.99, 15.1, 12.7, 260, 6.72, and 8.01 nmol/L, respectively. This method has been applied to analyze the metabolism of Trp in rabbit urine.

Keyword:

amperometric detection capillary micellar electrokinetic chromatography L -tryptophan metabolites pharmacokinetics

Community:

  • [ 1 ] Fuzhou Univ, Dept Chem, Fujian 350002, Peoples R China

Reprint 's Address:

  • 陈国南

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

Show more details

Related Keywords:

Source :

ELECTROPHORESIS

ISSN: 0173-0835

Year: 2005

Issue: 4-5

Volume: 26

Page: 903-910

3 . 8 5

JCR@2005

3 . 0 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 29

SCOPUS Cited Count: 26

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

Online/Total:145/10000806
Address:FZU Library(No.2 Xuyuan Road, Fuzhou, Fujian, PRC Post Code:350116) Contact Us:0591-22865326
Copyright:FZU Library Technical Support:Beijing Aegean Software Co., Ltd. 闽ICP备05005463号-1