Spectral Resolution of a Binary Mixture Containing Valsartan and Hydrochlorothiazide in Tablets by Ratio Spectra Derivative and Inverse Least Square Techniques

References

• Hardman , J. G. and Limbird , L. E. , eds. 1996 . “ Goodman & Gilman's ” . In The Pharmacological Basis of Therapeutics , 9th Ed. The McGraw‐Hill Companies . [CD‐ROM]
   Google Scholar
• Kramer , R. 1998 . Chemometric Techniques in Quantitative Analysis 51 – 130 . New York : Marcel Dekker Inc. .
   Google Scholar
• Beebe , K. R. and Kowalski , B. R. 1987 . Introduction to multivariate calibration and analysis . Anal. Chem. , 59 : 1007A – 1016A .
   Google Scholar
• Adams , M. J. 1995 . Chemometrics in Analytical Spectroscopy. The Royal Society of Chemistry 187 Cambridge : Thomas, Graham House, Science Park .
   Google Scholar
• Martens , H. and Naes , T. 1991 . Multivariate Calibration Chichester , , UK : J. Wiley and Sons .
   Google Scholar
• Cowe , I. A. , McNicol , J. W. and Cuthbertson , D. C. 1985 . A designed experiment for the examination of techniques used in the analysis of near‐infrared spectra . Analyst , 110 : 1233 – 1240 . [CROSSREF] [CSA]
   Google Scholar
• Dinç , E. 2002 . Spectral analysis of benazepril hydrochloride and hydrochlorothiazide in pharmaceutical formulations by three chemometric techniques . Anal. Lett. , 35 : 1021 – 1039 . [CROSSREF]
   Google Scholar
• Dinç , E. 2003 . Linear regression analysis and its application to the multivariate spectral calibrations for the multiresolution of a ternary mixture of caffeine, paracetamol and methamizol in tablets . J. Pharm. Biomed. Anal. , 33 : 605 – 615 . [CROSSREF] [CSA]
   Google Scholar
• Salinas , F. , Berzas Nevado , J. J. and Espinos Mansilla , A. 1990 . A new spectrophotometric method for quantitative multicomponent analysis resolution of mixtures salicylic and salicyuric acids . Talanta , 37 : 341 – 351 . [CROSSREF]
   Google Scholar
• Berzas Nevado , J. J. , Guiberteau Cabanillas , C. and Salinas , F. 1992 . Spectrophotometric resolution of ternary mixtures of salicylaldehyde, 3‐hydroxybenzaldehyde and 4‐hydroxybenzaldehyde by the derivative ratio spectrum‐zero crossing method . Talanta , 39 : 547 – 553 . [CROSSREF]
   Google Scholar
• Dinç , E. 1999 . The spectrophotometric multicomponent analysis of a ternary mixture of ascorbic acid, acetylsalicylic acid and paracetamol by the double divisor‐ratio spectra derivative and ratio spectra‐zero crossing method . Talanta , 48 : 1145 – 1157 . [CROSSREF]
   Google Scholar
• Berzas‐Nevado , J. J. , Guiberteau Cabanillas , C. and Lopez Salinas , F. 1990 . Resolution of the binary mixture of salicylaldehyde and 4‐hydroxybenzaldehyde by using first derivative ratio spectra . Anal. Lett. , 23 : 2077 – 2094 .
   Google Scholar
• Corbella Tena , R. , Rodriquez Delgado , M. A. , Sanchez , M. J. and Garcia Montelongo , F. 1997 . Comparative study of the zero‐crossing, ratio spectra derivative and partial least‐squares methods applied to the simultaneous determination of atrazine and its degradation product desethylatrazin‐2‐ hydroxy in ground water . Talanta , 44 : 673 – 683 . [CROSSREF]
   Google Scholar
• Morelli , B. 1995 . Determination of ternary mixtures of antibiotics, by ratio‐spectra zero‐crossing first‐ and third‐derivative spectrophotometry . J. Pharm. Biomed. Anal. , 13 : 219 – 227 . [PUBMED] [INFOTRIEVE] [CROSSREF] [CSA]
   Google Scholar
• Uslu , B. , Özkan , S. A. and Aboul‐Enein , H. Y. 2002 . Spectrophotometric determination of melatonin and pyridoxine HCl in binary mixture using first derivative of the ratio spectra method . Anal. Lett. , 35 : 2305 – 2317 . [CROSSREF]
   Google Scholar
• Uslu , B. and Özkan , S. A. 2002 . Determination of binary mixtures of Levodopa and Benserazide in pharmaceuticals by ratio‐spectra derivative spectrophotometry . Anal. Lett. , 35 : 303 – 314 . [CROSSREF]
   Google Scholar
• Şatana , E. , Altınay , Ş. , Günden‐Göger , N. , Özkan , S. A. and Şentürk , Z. 2001 . Simultaneous determination of valsartan and hydrochlorothiazide in tablets by first‐derivative ultraviolet spectrophotometry and high‐performance liquid chromatography . J. Pharm. Biomed. Anal. , 25 : 1009 – 1013 . [CROSSREF] [CSA]
   Google Scholar
• Tatar , S. and Saglık , S. 2002 . Comparison of UV‐ and second derivative‐spectrophotometric and LC methods for the determination of valsartan in pharmaceutical formulation . J. Pharm. Biomed. Anal. , 30 : 371 – 375 . [PUBMED] [INFOTRIEVE] [CROSSREF] [CSA]
   Google Scholar
• Carlucci , G. , Di Carlo , V. and Mazzeo , P. 2000 . Simultaneous determination of valsartan and hydrochlorothiazide in tablets by high‐performance liquid chromatography . Anal. Lett. , 33 : 2491 – 2500 .
   Google Scholar
• Hillaert , S. and Van den Bossche , W. 2003 . Simultaneous determination of hydrochlorothiazide and several angiotensin‐II‐receptor antagonists by capillary electrophoresis . J. Pharm. Biomed. Anal. , 31 : 329 – 339 . [PUBMED] [INFOTRIEVE] [CROSSREF] [CSA]
   Google Scholar