دراسة طيفية جديدة لتقديرأيون النحاس الثنائي بأستخدام الكاشف بارا- فنلين ثنائي الأمينP-PDA

Abstract

The percent study deals with feasibility of the reagent(P-phenylenediamine p-PDA),for spectrophotometeric determination of Cu(II) ion, the reagent with Cu(II) ion formed a brown colored ,complexes at an optimum(PH=3).Uv-Visb.spectrum of the complex showed maximum absorption at(1.049×10-7M - 7.344×10-7M) and molar absorptivity of(4866L.mol-1.cm-1) ,that stiochometry of the complex have been studied through tow methods, the molar ratio and jobs methods ,showed that the ratio of the ligand and ion is(1:2),measuring conductivity at room temperature indicated the ionic character of the complex.the studied effect of different parameters such as effect of cations and inions ,masking agent, effect of time, concentration of reagent and sequence of addition, statistical figures for determination of Cu(II) ions by(p-PDA) were RSD% (0.61 – 1.553)