Journal
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
Volume 947, Issue -, Pages 8-16Publisher
ELSEVIER
DOI: 10.1016/j.jchromb.2013.12.002
Keywords
Statins; Column-switching; Restricted access material; Online sample preparation
Funding
- Pro-Reitoria de Pesquisa da UFMG
- CAPES
- Farmacopeia Brasileira
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This study presents the development of a column-switching liquid chromatographic method with direct injection of human plasma for simultaneous determination of four statins (lovastatin, pravastatin, rosuvastatin and simvastatin), the main class of drugs used in the treatment of hyperlipidemia. By using a C18 (30 mm x 4.6 mm, 15 mu m) a lab made bovine serum albumin restricted access material (RAM) column was prepared and compared with a commercial alquil-diol silica RAM column (C18, 25 mm x 4.0 mm, 25 mu m) in terms of their protein exclusion capacity and micromolecules retention. Foreflush and backflush modes were compared for both RAM columns to the number of theoretical plates, asymmetry, resolution and chromatographic run time. The developed method was validated in the range from 125 to 876 ng mL(-1) for lovastatin, rosuvastatin and simvastatin, and from 500 to 2000 ng mL(-1) for pravastatin, presenting selectivity, precision and accuracy intra and inter-run. Total analysis time (sample preparation and chromatographic separation) was only 16 min when the backflush mode was employed in the column-switching system. (C) 2013 Elsevier B.V. All rights reserved.
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