A method for the simultaneous spectrophotometric determination of the divalent ions of iron, cobalt, nickel and copper based on the formation of their complexes with 1,5-bis(di-2-pyridylmethylene) thiocarbonohydrazide (DPTH) is proposed. The resolution of quaternary mixtures of these metallic ions was accomplished by several chemometric approaches. A comparative study of the results obtained fo...

Simple and accurate spectrophotometric and HPLC method was developed for determination of Fexofenadine in tablets dosage form. The spectrophotometric method was developed by dissolving tablets in 1:1 Methanol to make solution of 10ppm giving absorbance at 220nm. The experimental conditions were optimized and Beers law was obeyed over the applicable concentration range. The application of HPLC p...