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author:

Zheng, Lihui (Zheng, Lihui.) [1] | Tong, Ping (Tong, Ping.) [2] | Zheng, Xinyu (Zheng, Xinyu.) [3] | Chi, Yuwu (Chi, Yuwu.) [4] | Chen, Guonan (Chen, Guonan.) [5] | Zhang, Lan (Zhang, Lan.) [6]

Indexed by:

EI

Abstract:

A simple, rapid, sensitive and specific method using capillary electrophoresis (CE) coupled with electrostacking and amperometric detection (AD) has been developed for the simultaneous separation and determination of clenbuterol (CLB), terbutaline (TER), salbutamol (SAL) and formoterol (FMT). In this paper, the CE separation and AD conditions were investigated in detail. The optimum conditions were: pH 8.6 Na2B4O7-H 3BO3 buffer solution (20.0 mmol/L), 9 kV for the separation voltage, and 1000 mV (versus Ag/AgCl) for the detection potential. When the sample which was dissolved in 70% ACN-water mixture solution was injected 60 s by 15 kV electrokinetic injection, the best stacking effects was obtained. Under the optimum conditions, the enhancement factors of these β2-agonists had been greatly improved more than 5500-fold compared with the conventional electrokinetic injection. And then an excellent linear response was obtained with LODs (S/N = 3) of 0.098, 0.024, 0.063 and 0.920 pmol/L for CLB, TER, SAL and FMT in urine, respectively. The precision weas determined in both intra-day (n = 5) and inter-day (n = 15) assays, and the RSDs were not more than 2.1 and 3.4% for migration time and peak current, respectively. The proposed method has been applied to analyze human urine samples successfully. © 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keyword:

Capillary electrophoresis Cerium Electrodynamics Separation Sodium compounds

Community:

  • [ 1 ] [Zheng, Lihui]Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian, 350002, China
  • [ 2 ] [Zheng, Lihui]Sport Science Research Center, Fuzhou University, Fuzhou, Fujian, China
  • [ 3 ] [Tong, Ping]Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian, 350002, China
  • [ 4 ] [Tong, Ping]Sport Science Research Center, Fuzhou University, Fuzhou, Fujian, China
  • [ 5 ] [Zheng, Xinyu]School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
  • [ 6 ] [Chi, Yuwu]Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian, 350002, China
  • [ 7 ] [Chen, Guonan]Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian, 350002, China
  • [ 8 ] [Zhang, Lan]Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian, 350002, China
  • [ 9 ] [Zhang, Lan]Sport Science Research Center, Fuzhou University, Fuzhou, Fujian, China

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Source :

Journal of Separation Science

ISSN: 1615-9306

Year: 2008

Issue: 20

Volume: 31

Page: 3556-3564

2 . 7 4 6

JCR@2008

2 . 8 0 0

JCR@2023

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 13

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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