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author:

Lin, Zian (Lin, Zian.) [1] | Xie, Zenghong (Xie, Zenghong.) [2] | Lü, Haixia (Lü, Haixia.) [3] | Lin, Xucong (Lin, Xucong.) [4] | Wu, Xiaoping (Wu, Xiaoping.) [5] | Chen, Guonan (Chen, Guonan.) [6]

Indexed by:

EI

Abstract:

A new method for pressurized capillary electrochromatography (pCEC) coupling with chemiluminescence (CL) detection using a modified on-column coaxial flow detection interface was developed. To evaluate the feasibility and reliability of the experimental setup, the typical CL compounds luminol and isoluminol were separated and detected by using this pCEC-CL system. A detailed investigation of CL detection interface and postcolumn CL reagent flow rate parameters was described. The excellent resolution and detection sensitivity was achieved by using 3-μm ODS-C18 packed column with 30% ACN (v/v), 5 mmol/L phosphate buffer (pH 8.0). Moreover, with the presence of Co(II) (1.0 × 10-4 mol/L) in the mobile phase, the linear range of the concentration for luminol was 2.0 × 10-9-2.0 × 10 -6 mol/L with a detection limit (S/N = 3) of 2.0 × 10 -10 mol/L, and 2.5 × 104 theoretical plates was achieved. In addition, separation and detection of the underivatized amino acids (L-threonine and L-tyrosine) were accomplished by using a polymerized monolithic column based on the principle of the luminol-H2O 2-Cu(II)-amino acid CL system. Under the optimum conditions, the mixture of amino acids was efficiently separated with satisfactory results. © 2006 American Chemical Society.

Keyword:

Amino acids Chemiluminescence Chromatographic analysis Interfaces (materials) pH effects Separation

Community:

  • [ 1 ] [Lin, Zian]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food-Safety, Department of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 2 ] [Xie, Zenghong]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food-Safety, Department of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 3 ] [Lü, Haixia]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food-Safety, Department of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 4 ] [Lin, Xucong]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food-Safety, Department of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 5 ] [Wu, Xiaoping]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food-Safety, Department of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 6 ] [Chen, Guonan]Ministry of Education Key Laboratory of Analysis and Detection Technology for Food-Safety, Department of Chemistry, Fuzhou University, Fuzhou, 350002, China

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Source :

Analytical Chemistry

ISSN: 0003-2700

Year: 2006

Issue: 15

Volume: 78

Page: 5322-5328

5 . 6 4 6

JCR@2006

6 . 8 0 0

JCR@2023

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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