A novel micellar per aqueous liquid chromatographic method for simultaneous determination of diltiazem hydrochloride, metoprolol tartrate and isosorbide mononitrate in human serum

• Published in: Journal of chromatography. B, Analytical technologies in the biomedical and life sciences Analytical technologies in the biomedical and life sciences, 2014-09, Vol.967, p.90-97
• Main Authors: Li, Ning, Li, Chun-lan, Lu, Ning-wei, Dong, Yu-ming
• Format: Article
• Language: English
• Subjects: Chromatography, Liquid - methods; Cyano column; Diltiazem - blood; Diltiazem - chemistry; Diltiazem hydrochloride; Drug Stability; Human serum; Humans; Hydrogen-Ion Concentration; Isosorbide Dinitrate - analogs & derivatives; Isosorbide Dinitrate - blood; Isosorbide Dinitrate - chemistry; Isosorbide mononitrate; Linear Models; Metoprolol - blood; Metoprolol - chemistry; Metoprolol tartrate; Micellar per aqueous liquid chromatography; Micelles; Reproducibility of Results; Sensitivity and Specificity
• ISSN: 1570-0232; 1873-376X
• DOI: 10.1016/j.jchromb.2014.07.019

•MPALC is built to simultaneously separate and determine DI, ME, and ISMN successfully.•MPALC is investigated to avoid the low sensitivity of MLC by using cyano column.•The possible separation mechanism of the method is discussed for the first time.•The MPALC is applicable for the analysis of DI, ME, and ISMN in human serum. A novel micellar per aqueous liquid chromatographic method was investigated to simultaneously determine diltiazem hydrochloride, metoprolol tartrate and isosorbide mononitrate in human serum. Separation and determination of the analytes were performed on a Pinnacle II Cyano column as the stationary phase using the mobile phase consisted of aqueous solution (4.15×10−2mol/L sodium dodecyl sulfate and 0.02mol/L sodium dihydrogen phosphate) with 10% (v/v) of 1-propanol at pH 7.0. This method was validated by linearity, lower limit of quantification, extraction recovery, stability, precision, and accuracy. The main analytical parameters were linearity (r>0.9950), intra- and inter-day precisions (intra-day RSD 2.2–3.5%, and inter-day RSD 3.7–9.5%), lower limit of quantification (20ngmL−1 for isosorbide mononitrate, metoprolol tartrate and diltiazem hydrochloride). The extraction recovery was 63.3% (0.1μg/mL), 65.6% (1.0μg/mL), and 69.5% (25μg/mL) for isosorbide mononitrate; 65.1% (0.1μg/mL), 69.5% (1.0 μgmL) and 73.5% (2.5μg/mL) for metoprolol tartrate; 67.1% (0.1μg/mL), 68.8% (1.0μg/mL) and 73.8 % (2.5μg/mL) for diltiazem hydrochloride. The relative error of stability was