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An electrochemical sensor was fabricated for arsenite detection using graphene oxide-assisted generation of prussian blue nanoparticles as enhanced redox signal label. The 5′-thiolate-labeled (GT)21-ssDNA was first self-assembled on a gold electrode surface via Au-S bond. Graphene oxide can interact with ssDNA through π-π stacking interaction and facilitate the generation of prussian blue nanoparticles...
An optical immunosensor based on measuring the surface enhanced light scattering (SELS) signals is developed by simultaneously scanning the excitation and the emission monochromators of a common spectrofluorometer. The formation of silanization on solid surface of glass slides and the binding of antibody with antigen in series have been confirmed by measuring the SELS signals. When 100μgml −1...
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