Citation: Xiao Huan Zang, Cai Rui Li, Qiu Hua Wu, Chun Wang, Dan Dan Han, Zhi Wang. Combination of hollow fiber-based liquid-phase microextraction with sweeping techniques in micellar electrokinetic chromatography for the determination of Strychnos alkaloids in human urine[J]. Chinese Chemical Letters, ;2007, 18(3): 316-318. doi: 10.1016/j.cclet.2007.01.032 shu

Combination of hollow fiber-based liquid-phase microextraction with sweeping techniques in micellar electrokinetic chromatography for the determination of Strychnos alkaloids in human urine

a Key Laboratory of Bioinorganic Chemistry, College of Science, Agricultural University of Hebei, Baoding 071001, China;
b College of Vocational and Technological Sanitation, Hebei University, Baoding 071002, China

Received Date: 20 October 2006

Fund Project: This work was supported both by the Natural Science Foundation of Hebei Province (B2006000413) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry.

A new method for the enrichment of Strychnos alkaloids in biological samples via liquid-phase rnicroextraction (LPME) based on porous polypropylene hollow fibers in combination with on-line sweeping in micellar electrokinetic chromatography was developed. The calibration curve was linear over the range of 20-200 ng mL^-1 for both strychnine and brucine in human urine sample. The detection limits (S/N=3:1) for strychnine and brucine were 1 ng mL^-1 and 2 ng mL^-1, respectively. The LPME-sweeping method has been successfully applied to the analysis of strychnine and brucine in real urine samples.
- Hollow fiber-based liquid-phase microextraction,
- Sweeping,
- MEKC,
- Strychnos alkaloids,
- Urine
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