A new immobilization procedure for development of an electrochemical immunosensor for parathyroid hormone detection based on gold electrodes modified with 6-mercaptohexanol and silane
Published in Talanta NULL 2015
Abstract
Fabrication of a new electrochemical impedance-based biosensor for the analysis of parathyroid hormone (PTH), using self-assembled monolayers (SAMs) of mercaptohexanol and (3-Aminopropyl) triethoxysilane on gold electrodes, was investigated for the first time in the field. Anti-PTH was used as a biorecognition element. To monitor immobilization processes in the biosensor fabrication, cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM) techniques were successfully operated. \CV\ and \EIS\ techniques were also used in quantification of PTH. Energy-dispersive X-ray analysis (EDAX) was also applied to identify surface modifications. Fabrication and working parameters of the biosensor were optimized. Moreover, Kramers
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