%0 Journal Article %T Application of the Bivariate Calibration for Simultaneous Determinations of Hydrochlorothiazide/Enalapril Maleate and Hydrochlorothiazide/Bisoprolol Fumarate in Drug Tablets %A Fadel Wedian %A Anas Lataifeh %J International Journal of Chemistry %D 2013 %I %R 10.5539/ijc.v5n2p29 %X The bivariate calibration method was used for quantification of hydrochlorothiazide/enalapril maleate and hydrochlorothiazide/bisoprolol fumarate in pharmaceutical tablets. The determination of hydrochlorothiazide/enalapril maleate is made using new absorption wavelengths at 211 and 272 nm, while hydrochlorothiazide/bisoprolol fumarate is made at new wavelengths 273.5 and 293 nm. The results are compared favorably to those obtained from HPLC. The method is simple, time saving, and costly effective; it could be used to determine the pharmaceutical compounds in commercial available products. %U http://www.ccsenet.org/journal/index.php/ijc/article/view/24913