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author:

Huang, Y. (Huang, Y..) [1] | Duan, J. (Duan, J..) [2] | Chen, Q. (Chen, Q..) [3] | Chen, G. (Chen, G..) [4]

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Scopus

Abstract:

Eight enkephalin-related peptides were derivatized using fluorescein isothiocyanate (FITC), and the derivatization products were separated and detected by capillary electrophoresis with laser-induced fluorescence detection. The optimum molar ratio of FITC and peptide for derivatization was found to be 40:1, and 5 mmol/L sodium borate buffer (pH 9.2) was selected as derivatization media in order to get the high efficiency. Enkephalin-related peptides were completely separated in the pH range of 10.51-10.60 in a running buffer consisting of 100 mmol/L sodium borate and 60 mmol/L sodium dodecyl sulfate (SDS). The detection limit for these eight enkephalins ranged from 0.18 to 2.25 nmol/L, and the linear response range was 1.0 × 10-6 to 1.0 × 10-9 mol/L with correlation coefficients between 0.9947-0.9988. A separation efficiency as high as 380 000 theoretical plates could be obtained for these analytes. © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keyword:

Enkephalin; Fluorescein isothiocyanate; Laser-induced fluorescence; Micellar electrokinetic chromatography

Community:

  • [ 1 ] [Huang, Y.]Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China
  • [ 2 ] [Huang, Y.]Department of Chemistry, Fujian Normal University, Fuzhou, Fujian, China
  • [ 3 ] [Duan, J.]Analytical and Testing Center, Fuzhou University, Fuzhou, Fujian 350002, China
  • [ 4 ] [Chen, Q.]Department of Chemistry, Fujian Normal University, Fuzhou, Fujian, China
  • [ 5 ] [Chen, G.]Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China

Reprint 's Address:

  • [Chen, G.]Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China

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Source :

Electrophoresis

ISSN: 0173-0835

Year: 2004

Issue: 7-8

Volume: 25

Page: 1051-1057

3 . 7 4 3

JCR@2004

3 . 0 0 0

JCR@2023

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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