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A highly sensitive electrochemical sensor is described for the determination of H2O2. It is based on based on the use of polyaniline that was generated in-situ and within 1 min on a glassy carbon electrode (GCE) with the aid of the Fe(II)/H2O2 system. Initially, a 2-dimensional composite was prepared from graphene oxide and polyamidoamine dendrimer through covalent interaction. It was employed as...
A label-free electrochemical aptasensor was developed for selective detection of saxitoxin (STX). It is taking advantage of target-induced conformational change of an STX-specific aptamer when it binds to the toxin. A monolayer of octadecanethiol was deposited on a gold electrode, and then coated with a film of multiwalled carbon nanotubes (MWCNTs) to which the aptamer was covalently conjugated. Methylene...
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