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author:

Yu, L. (Yu, L..) [1] | Xu, X. (Xu, X..) [2] | Huang, L. (Huang, L..) [3] | Lin, J. (Lin, J..) [4] | Chen, G. (Chen, G..) [5]

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Scopus

Abstract:

A new rapid and reproducible method using microemulsion electrokinetic chromatography (MEEKC) combining field amplified sample injection and electroosmotic flow suppressant for the analysis of five quinolizidine alkaloids is developed in this paper. For the separation of five quinolizidine alkaloids, a running buffer composed of 1.2% (v/v) 1-butanol, 0.6% (v/v) ethyl acetate and 98.2% (v/v) 1 mM Na2B4O7-2 mM NaH2PO4 buffer solution containing 21 mM sodium cholate (SC) (pH 6.5) was developed. The resolution of the analytes was improved significantly by adding a divalent cation (e.g., Mg2+) to the running buffer as an electroosmotic flow modification. In order to analyze trace quinolizidine alkaloids in traditional Chinese herbal medicines, field amplified sample injection (FASI) was applied to increase the detection sensitivity. The detection limits (defined as S/N = 3) for the analytes could be as low as 0.0001 μg/mL. This method was applied for the determination of quinolizidine alkaloids in real samples with simple extraction procedures, and the assay results were satisfactory. © 2008 Elsevier B.V. All rights reserved.

Keyword:

Electrokinetic chromatography; Electroosmotic flow suppressant; Field amplified sample injection; Microemulsion; Quinolizidine alkaloids

Community:

  • [ 1 ] [Yu, L.]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China
  • [ 2 ] [Xu, X.]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China
  • [ 3 ] [Huang, L.]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China
  • [ 4 ] [Lin, J.]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China
  • [ 5 ] [Chen, G.]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China

Reprint 's Address:

  • [Chen, G.]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China

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Source :

Journal of Chromatography A

ISSN: 0021-9673

Year: 2008

Issue: 1-2

Volume: 1198-1199

Page: 220-225

3 . 7 5 6

JCR@2008

3 . 8 0 0

JCR@2023

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 35

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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