• synthesis and characterisation of a novel bi-nuclear copper2+ complex and its application as electrode-modifying agent for simultaneous voltammetric determination of dopamine and ascorbic acid

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 804
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a new binuclear complex of copper2+, [lcu2+(ch3coo)2cu2+l](ch3coo)2 where l is n,n-bis(phthalimide)ethylenediamine, was synthesised and characterised. the complex ion [lcu2+(ch3coo)2cu2+l]2+ was encapsulated into zsm-5 zeolite and used to modify the surface of the glassy carbon electrode. this modified electrode, in a phosphate buffer solution at ph 7.0, exhibited an oxidation potential for dopamine (da) and ascorbic acid (aa) at electrode potentials of 0.230 v and −0.090 v vs. ag/agcl respectively, a separation of 0.320 v. the electro-oxidation of da or aa on the modified electrode is independent of each other. no interference was observed from na+, k+, cl, so 4 2−, mg2+, ca2+, zn2+, fe2+, and glucose. the detection limits obtained were 2.91 × 10−7 m for da and 3.5 × 10−7 m for aa.

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