Electrocatalytic determination of dopamine in pharmaceutical and human serum samples by using [N,N′-bis(2-pyridine carboxamido)-1,2-benzene] nickel(II) modified carbon paste electrode
作者： B. Rezaei , S. Meghdadi , M. Rezazadeh
DOI: 10.1134/S1061934809050141
关键词:
摘要: The main purpose of this study is to develop an inexpensive, simple, selective and especially sensitive modified carbon paste electrode (MCPE) for the determination dopamine (DA) in pharmaceutical human serum samples. (CPE) has been by using [N,N′-bis(2-pyridine carboxamido)-1,2-benzene] nickel(II) complex (Ni(II)bpb) electrochemical behavior studied cyclic voltammetry. shows excellent electrocatalytic effect on oxidation DA. Under optimum conditions, calibration plots are found be linear range 7.0 × 10−7−1.0 10−5 M (r 2 = 0.9940) 1.0 10−5−1.0 10−4 (r2 0.9945); detection limit 6.2 10−8 M. preparation MCPE very easy. can renewed simple polishing. proposed method good sensitivity, reproducibility (RSD ∼ 2.9%), high stability (more than two month) without any considerable change response recovery prepared successfully applied voltammetric DA biological
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