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Simple and rapid HPLC method for simultaneous determination of atenolol and chlorthalidone in spiked human plasma
Faculty
Pharmacy
Year:
2011
Type of Publication:
Article
Pages:
43-49
Authors:
Elgawish, Mohamed S, Mostafa, Samia M, Elshanawane, Abdalla A
DOI:
10.1016/j.jsps.2010.10.003
Journal:
SAUDI PHARMACEUTICAL JOURNAL SAUDI PHARMACEUTICAL SOC, KING SAUD UNIV
Volume:
19
Research Area:
Pharmacology \& Pharmacy
ISSN
ISI:000287827900006
Keywords :
Column-liquid chromatography, Atenolol, Chlorthalidone, Human plasma
Abstract:
A simple, sensitive and rapid chromatographic method was developed and validated for the simultaneous quantification of atenolol and chlorthalidone in human plasma using hydrochlorothiazide as internal standard (IS). The method utilized proteins precipitation with acetonitril as the only sample preparation involved prior to reverse phase-HPLC. The analytes were chromato-graphed on Shim-pack cyanopropyl column with isocratic elution with 10 mM KH(2)PO(4) (pH 6.0) - methanol (70:30, v/v) at ambient temperature with flow rate of 1 mL min(-1) and UV detection at 225 nm. The chromatographic run time was less than 10 min for the mixture. The calibration curves were linear over the range of 0.1-10 mu g mL(-1). The method was validated in terms of accuracy, precision, absolute recovery, freeze-thaw stability, bench-top stability and re-injection reproducibility. The within- and between-day accuracy and precision were found to be within acceptable limits <15\%. The analytes were stable after three freeze-thaw cycles (deviation <15\%). The proposed method was specific for the simultaneous determination of atenolol and chlorthalidone in human plasma where there was no interference from endogenous biological substances. (C) 2010 King Saud University. Production and hosting by Elsevier B.V. All rights reserved.
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