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author:

Chen, Y. (Chen, Y..) [1] | Zhang, L. (Zhang, L..) [2] | Xu, L. (Xu, L..) [3] | Lin, J.-M. (Lin, J.-M..) [4] | Chen, G. (Chen, G..) [5]

Indexed by:

Scopus

Abstract:

A CE with LIF detection was developed for the separation and determination of three bradykinin (BK) metabolites: BK2-9, BK1-7 and BK1-5. BK fragments were derivatized with 5-(4, 6-dichloro-s-triazin-2-ylamino) fluorescein before CE-LIF analysis. Eighty millimolar of Tris-H3PO4 (pH 9.0) was selected as the derivatization media. Three BK fragments were baseline separated within 10 min by using 0.2M TAPS-Tris buffer (pH 8.5) as the running buffer. Meanwhile we have also developed a simple, quick, and sensitive on-column transient ITP preconcentration for CE-LIF detection of three BK fragments. Ten millimolar of Tris-HCl (pH 9.0) was chosen as the leading electrolyte and 0.2M TAPS-Tris (pH 8.5) containing 10mM 1-butyl-3-methylimidazolium tetra-fluoroborate as the terminating electrolyte and also served as the running buffer during CZE separation. By using this transient ITP coupled with CE-LIF, concentration detection limits (S/N=3) for BK2-9, BK1-7 and BK1-5 were 0.3, 0.1 and 0.1 pmol/L, respectively. This method has been applied to the assay of human saliva and plasma samples with satisfactory results. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.

Keyword:

Bradykinin fragments; CE; LIF; Transient ITP

Community:

  • [ 1 ] [Chen, Y.]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian, China
  • [ 2 ] [Chen, Y.]Analytical and Testing Center, Fuzhou University, Fuzhou, Fujian, China
  • [ 3 ] [Zhang, L.]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian, China
  • [ 4 ] [Zhang, L.]Analytical and Testing Center, Fuzhou University, Fuzhou, Fujian, China
  • [ 5 ] [Xu, L.]Analytical and Testing Center, Fuzhou University, Fuzhou, Fujian, China
  • [ 6 ] [Lin, J.-M.]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian, China
  • [ 7 ] [Chen, G.]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian, China

Reprint 's Address:

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

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Source :

Electrophoresis

ISSN: 0173-0835

Year: 2009

Issue: 13

Volume: 30

Page: 2300-2306

3 . 0 7 7

JCR@2009

3 . 0 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 13

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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