Determination of plasma heparin by micellar electrokinetic capillary chromatography

The micellar electrokinetic capillary chromatography (MECC) method is reported for the separation of heparin, and for the possibility of direct determination of free heparin in plasma. The conditions for MECC were: pH 8.5, 25 mM sodium dodecyl sulfate (SDS), 25 mM borate buffer, with a 30 cm×50 μm I...

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Bibliographic Details
Published in:Talanta (Oxford) 1998-08, Vol.46 (4), p.757-760
Main Authors: Zhou, Xiao-Mian, Liu, Jian-Wu, Zhang, Meng-En, Chen, Shun-jin
Format: Article
Language:English
Subjects:
Analysis
Biological and medical sciences
General pharmacology
Heparin
High-performance capillary electrophoresis
Medical sciences
Pharmacology. Drug treatments
Plasma
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Summary:The micellar electrokinetic capillary chromatography (MECC) method is reported for the separation of heparin, and for the possibility of direct determination of free heparin in plasma. The conditions for MECC were: pH 8.5, 25 mM sodium dodecyl sulfate (SDS), 25 mM borate buffer, with a 30 cm×50 μm ID fused-silica capillary. The sample was detected with a UV-detector at 270 nm with heparin as external standard. The recovery rate was 95.6–98.7%. This method was linear in the range 80–7000 U l −1. The within-run and between-run relative standard deviations were lower than 3.1 and 4.5%, respectively. It is suggested that this MECC method may be used to determine blood samples containing high levels of heparin.
ISSN:0039-9140
1873-3573
DOI:10.1016/S0039-9140(98)00040-X