Detection of Escherichia coli bacteria by impact electrochemistry. Issue 20 (21st September 2018)

• Record Type: Journal Article
• Authors: Couto, Rosa A. S.; Chen, Lifu; Kuss, Sabine; Compton, Richard G.
• Is Part Of: Analyst. Volume 143:Issue 20(2018)
• Page Start: 4840
• Page End: 4843
• Publication Date: 2018-09-21
• Subjects: Chemistry, Analytic -- Periodicals; 543
• DOI: 10.1039/c8an01675e
• Languages: English
• ISSNs: 0003-2654

Abstract

Abstract : Employing the redox species N, N, N ′, N ′-tetramethyl- para -phenylene-diamine (TMPD), the label-free detection of E. coli, based on an electrochemical "on"-signal during impact electrochemistry, is reported for the first time. Abstract : We report the redox mediated detection of Escherichia coli bacteria at carbon microelectrodes, using the impact electrochemistry technique. By employing N, N, N ′, N ′-tetramethyl- para -phenylene-diamine (TMPD) as redox mediator a concentration dependency for bacteria impacts was observed, whereby its impact frequency is shown to be in good agreement with theoretically predicted values.