Reza ojani - Department of Chemistry, Electroanalytical Chemistry Laboratory, Babolsar, Iran
jahanbakhsh raoof - Department of Chemistry, Electroanalytical Chemistry Laboratory, Babolsar ,Iran
shahla fathi - Department of Chemistry, Electroanalytical Chemistry Laboratory, Babolsar ,Iran

aminopropyl-grafted MCM-41 was prepared and characterized with XRD method .then this material was used for preparation of a modified Carbon paste electrode .Results show that electrochemical pretreatment of this modified carbon paste electrode in acidic solution increased the absorbance of ferrocyanide to the electrode surface. we used this electrode for open circuit accumulation and voltmmetric determination of ferrocyanide in aqueous solution, and investigate factors affecting magnitude of analytical signal. under optimum condition this electrode was successfully used for detection of ferrocyanide as an anionic electroactive species and a linear response in the concentration range of 2 ×10-7 – 1×10-5 M was observed.

MCM-41, Ferrocyanide, Preconcentration