Investigation of Nitrite Detection with Electrochemical Impedance Spectroscopy

• Abstract:

  An electrochemical impedance spectroscopy study is described for the determination of nitrite. A screen printed carbon electrode (SPCE) was modified with biocompatible gold nanoparticles stabilized by a polymer (branched polyethyleneimine). The modified SPCE exhibits high electro catalytic activity toward nitrite oxidation, typically at a working potential at around 0.5 V (vs. Ag/AgCl). Sensitive impedimetric detection of nitrite is demonstrated. The studied detection range extends from 1 to 10000 µM. Based on found results, the sensor’s performances will be calculated (limit of detection, sensitivity, linear range...) and further studies like stability and selectivity test will be continued.
• Keywords:

  Nitrite detection, Electrochemical sensors, Gold nanoparticles, Screen Printed Electrodes, Electrochemical Impedance Spectroscopy
• Download:

  IMEKO-TC19-2019-10.pdf
• DOI:

  _unreg_tc19-2019.10

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