A simple, time saving and accurate method for the simultaneous determination of Fe2O3, Al2O3 and TiO2 in Portland cement relies on the use of zero crossing and derivative ratio techniques has been examined. Alizarin Complexone (Alizarin-3-methylamine-N,N-diaceticacid , AC ) was used as a complexing agent. The complexes formed at pH 3.8 allow precise and accurate determination of iron (1.6 – 6.14 mgL-1), aluminum (0.63 – 1.7 mgL-1) and titanium (0.47 – 1.9 mgL-1). The validity of the method was checked by analyzing several synthetic mixtures containing different ratios of metal ions. The reproducibility was checked by analyzing a series of seven solutions each having an Fe(III), Al(III) and Ti(IV) concentration of 2.79,1.35 and 0.47 mgL-1 respectively . The relative standard deviations (RSD) are 0.70 % for iron, 0.98% for aluminum and 0.88% for titanium. The major merit of this method is the absence of matrix effect.