An amperometric sensor based on electrochemically triggered reaction: redox-active Ar–NO/Ar–NHOH from 4-nitrophthalonitrile-modified electrode for the low voltage …
PR Lima, WJR Santos, R de CS Luz, FS Damos… - Journal of …, 2008 - Elsevier
The present work describes the development of a highly sensitive amperometric sensor
based on a simple and efficient carbon paste electrode modified with a new redox
“mediator”, 4-nitrophthalonitrile, toward detection of cysteine (CySH) in neutral medium at an
applied potential of 0.33 V vs. Ag/AgCl. The sensor showed its best performance in 0.1
molL− 1 phosphate buffer solution, at pH 7.0. After optimizing the operational conditions, the
sensor provided a linear response range for CySH from 0.8 up to 13.2 μmolL− 1 with …
based on a simple and efficient carbon paste electrode modified with a new redox
“mediator”, 4-nitrophthalonitrile, toward detection of cysteine (CySH) in neutral medium at an
applied potential of 0.33 V vs. Ag/AgCl. The sensor showed its best performance in 0.1
molL− 1 phosphate buffer solution, at pH 7.0. After optimizing the operational conditions, the
sensor provided a linear response range for CySH from 0.8 up to 13.2 μmolL− 1 with …
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