Rapid electrochemical detection of Escherichia coli using nickel oxidation reaction on a rotating disk electrode.

ABSTRACT: A standalone electrochemical method for detecting the bacterium Escherichia coli in water was developed using a nickel electrode and no biorecognition element. Electric current responses from different E. coli concentrations were recorded based on their interaction with a locally formed electrocatalyst. A rotating disk electrode was used to minimize the mass transport limitations at the interface. Results from experiments with the rotating disk electrode also paved the way for hypothesizing the detection mechanism. The operating conditions were established for sensing the electric current responses in the presence of E. coli. The least-squares linear regression model was fit to the data obtained from currents of some known E. coli concentrations. This probe had

SUBMITTER: Ramanujam A 

PROVIDER: S-EPMC7957341 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature