مقاله 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 : تی پی بین

خلاصه مقاله

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.

نویسندگان

Diganta Kumar Das [ Department of Chemistry, Gauhati University, 781 014, Guwahati, Assam, India ]

Babita Sarma [ Department of Chemistry, Gauhati University, 781 014, Guwahati, Assam, India ]

Sangita Haloi [ Department of Chemistry, Gauhati University, 781 014, Guwahati, Assam, India ]

کلمات کلیدی

ascorbic acid dopamine ZSM 5 zeolite voltammetry sensor

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Chemical Papers 2013

Chemical Papers is devoted to research in pure and applied chemistry and chemical engineering. At its founding in 1947, the journal presented the achievements of Slovak chemical science. Today, it is a peer-reviewed international journal published in English by the Institute of Chemistry of the Slovak Academy of Sciences, with the support of several other academic institutions. Its interdisciplinary coverage brings chemistry research together with related disciplines, including analytical chemistry; (bio)catalysis; biochemistry; chemical (bio)technology; (bio)chemical engineering; chemical physics; drug chemistry; food chemistry; environmental chemistry; inorganic chemistry; macromolecular chemistry; materials chemistry; mathematical chemistry; medical and pharmaceutical chemistry; nanochemistry; organic chemistry; physical chemistry and more.

حوزه های تحت پوشش : Chemistry/Food Science, general, Industrial Chemistry/Chemical Engineering, Biochemistry, generalBiotechnology