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A Glassy Carbon Electrode Modified with LangmuirBlodgett Film Composed of DNA and Polyaniline for the Sensitive Determination of Salbutamol
Author(s) -
Zou Lina,
Li Yinfeng,
Cao Shaokui,
Ye Baoxian
Publication year - 2014
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201300505
Subject(s) - cyclic voltammetry , polyaniline , dielectric spectroscopy , electrode , materials science , electrochemistry , differential pulse voltammetry , glassy carbon , voltammetry , analytical chemistry (journal) , inorganic chemistry , chemistry , chromatography , polymer , composite material , polymerization
A composite LangmuirBlodgett film prepared from DNA and polyaniline was deposited on the surface of a glassy carbon electrode (GCE) to give a new voltammetric sensor for the β2‐agonist salbutamol (SAL). Cyclic voltammetry and electrochemical impedance spectroscopy were employed to study the characteristic of the modified electrode. The electrochemistry of SAL at the modified electrode was investigated at pH 6.8 by cyclic voltammetry and differential pulse anodic voltammetry. The oxidation of SAL at this electrode is an adsorption‐controlled irreversible process. A sensitive electroanalytical method for determination of SAL was worked out that displays high precision and good reproducibility. The method was applied to quantify SAL in tablets with satisfactory results.