Youssef El-Sayed A, Khalil M M
Department of Chemistry, Faculty of Science, Al-Azhar University, Assiut, Egypt.
Talanta. 1996 Apr;43(4):583-8. doi: 10.1016/0039-9140(95)01774-7.
A method is proposed for the simultaneous determination of iron(III) and molybdenum(VI) by first-derivative spectrophotometry based on the absorption spectra of their complexes with morin in the presence of a cationic surfactant. The zero-crossing measurement technique is found sutiable for the direct measurement of the first-derivative value at the specified wavelengths. Iron(III) (0.9-1.5 mug ml(-1)) and molybdenum(VI) (0.3-4.2 mug ml(-1)) in different ratios have been determined simultaneously. A critical evaluation of the proposed method is performed by statistical analysis of the experimental data. The method was applied to determine iron and molybdenum in different alloys.
