title: Electrochemical behavior of tectoridin and its sensitive determination based on L-arginine modified electrode.
abstract: A simple, inexpensive and highly sensitive voltammetric method for the determination of tectoridin was developed using a poly(L-Arginine) modified electrode. The redox character of tectoridin at proposed electrode was studied systematically and some dynamic parameters were calculated for the first time. A reasonable reaction mechanism of tectoridin on the poly(L-Arginine)/GCE was also dicussed and proposed, which could be a reference for the pharmacological action of tectoridin in clinical study. And the electroanalytical method for determination of tectoridin was established by differential pulse voltammograms (DPV). Under optimum conditions, the response peak currents were linear relationship with tectoridin concentrations in the range of 5.0×10(-8)-2.0×10(-6) mol L(-1) with a detection limit of 4.0×10(-8) mol L(-1). Therefore, the high sensitivity for tectoridin sensing at the proposed electrode was achieved, and the proposed method could also be used to detect tectoridin in the Chinese medicinal herb Blackberrylily with satisfactory results.
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
authors.forename: Wenhua
authors.initials: W
authors.lastname: Qiao
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China; Department of Environmental Engineering and Chemistry, Luoyang Institute of Science and Technology, Luoyang 471023, PR China.
authors.forename: Lu
authors.initials: L
authors.lastname: Wang
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
authors.forename: Huichao
authors.initials: H
authors.lastname: Li
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
authors.forename: Gaiping
authors.initials: G
authors.lastname: Li
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Li
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China. Electronic address: yebx@zzu.edu.cn.
authors.forename: Baoxian
authors.initials: B
authors.lastname: Ye
mesh_terms: D004365:Drugs, Chinese Herbal / Q000032:analysis; D004563:Electrochemistry; D004566:Electrodes; D006801:Humans; D007529:Isoflavones / Q000032:analysis* / Q000737:chemistry / Q000652:urine; D010455:Peptides / Q000737:chemistry
chemical_list: D004365:Drugs, Chinese Herbal; D007529:Isoflavones; D010455:Peptides; C015462:polyarginine; C120040:tectoridin
keywords: Electrochemical sensor; Electropolymerization; L-Arginine; Tectoridin