Journal
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
Volume 407, Issue 7, Pages 1951-1959Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-014-8440-1
Keywords
Tulathromycin; Electrochemical sensors; Molecular imprinted polymer; Gold electrode
Funding
- National Natural Science Foundation of China [31371768]
- Key Laboratory of Industrial Biotechnology Ministry of Education [KLIB-KF201109]
- Program for New Century Excellent Talents in Jiangnan University
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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A novel tulathromycin (TLTMC) electrochemical sensor based on molecularly imprinted polymer (MIP) membranes was constructed. p-Aminothiophenol (p-ATP) and TLTMC were assembled on the surface of gold nanoparticles (AuNPs) modified on the gold electrode (GE) by the formation of Au-S bonds and hydrogen-bonding interactions. Besides, polymer membranes were formed by electropolymerization in a polymer solution containing p-ATP, tetrachloroaurate(III) acid (HAuCl4), tetrabutylammonium perchlorate (TBAP), and a template molecule TLTMC. A novel molecular imprinted sensor (MIS) in this experiment was achieved after the removal of TLTMC. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) measurements were used to illustrate the process of electropolymerization and its optimal conditions. The electrode with MIP obtained the linear of response range, which was between 3.0 x 10(-12) mol L-1 and 7.0 x 10(-9) mol L-1, and the limit of detection was 1.0 x 10(-12) mol L-1. All the obtained results indicate that the MIS tends to be an effective electrochemical technique for the determination of TLTMC in real-time and in a complicated matrix.
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