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Silesian Tech University.
Silesian Tech University.
Östergötlands Läns Landsting, Heart and Medicine Centre, Department of Clinical Physiology UHL.
2011 (English)In: JOURNAL OF LIQUID CHROMATOGRAPHY and RELATED TECHNOLOGIES, ISSN 1082-6076, Vol. 34, no 6, 421-435 p.Article in journal (Refereed) Published
Abstract [en]

A validated reverse-phase Ultra HPLC method for the simultaneous determination of drugs sotalol, metoprolol, propranolol, carvedilol, salicylic acid, dexamethasone, prednisolone, and ketoprofen and flavonoids: (+/-)-catechin, (-)-epicatechin, rutin, hesperidin, neohesperidin, quercitrin, (+/-)-naringenin, hesperetin in human urine has been developed. Urine samples were pretreated by solid-phase extraction using SDB and C18 cartridges. The extraction efficiencies of each analyte from urine ranged from 76.21% to 101.29%. Gradient separation is achieved by using a Chromolith (R) Fast Gradient Monolithic C18e (50mmx2mm) column and Hypersil Gold (50mmx2.1mm, 1.9 mu m) column, using UV detection to monitor the analytes at 227, 240, 254, and 280nm. The mobile phase consists of mixed 0.05% trifluoroacetic acid in water and acetonitrile in the gradient elution. All sixteen compounds were analyzed within 4min. The LOD and LOQ of drugs and flavonoids are 0.01 mu g/mL and 0.03 mu g/mL; 0.02 mu g/mL and 0.07 mu g/mL, respectively. The developed procedure allows the determination of drugs in urine in concentrations from 0.2 to 40 mu g/mL. The following concentrations of the examined drugs in human urine, belonging to people treated with -blockes, were detected. What is more, an amount of flavonoids occur in urine in higher concentrations than calculated LOD and LOQ. The method has been proved to be precise, accurate, and well suited to the routine determination of all these flavonoid and drug concentrations in human urine samples.

Place, publisher, year, edition, pages
Taylor and Francis , 2011. Vol. 34, no 6, 421-435 p.
Keyword [en]
drug, flavonoid, method validation, solid phase extraction, ultra HPLC
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-67556DOI: 10.1080/10826076.2011.555675ISI: 000288958600003OAI: diva2:411248
Available from: 2011-04-18 Created: 2011-04-18 Last updated: 2011-04-18

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