Electrochemical Study of the Complexation of Quercetin with Lead (׀׀ ) ion in acidic media

Dietry flavonoids(Poly phenols) are important phytonutrient component widely distributed in plant foods , flavonoids have beneficial biological activities,such as antioxidant activity can chelate with metal ions the interaction of lead(׀׀) ion a poly hydroxylated flavonoids, quercetin molecule,were investigated electrochemically acidic media .The Differential Puls Polarographic Techanique was used to determine kinetics parameters (Kס f,h αn) using Meites- Israel method, also thermodynamic such enthalpy change (∆H), free energy chang (∆G) entropy change(∆S) Pb+2 – complexes Quercetin at (293- 313k) . The(Kסf,h, αn)values for electrode processes show that were irreversible and diffusion controlled.