Development of electrochemical method for the determination of olaquindox using multi-walled carbon nanotubes modified glassy carbon electrode

► A simple rapid electrochemical detection method was developed for OLA. ► The new electrochemical sensor showed an excellent electrocatalytic activity to OLA. ► The cathodic peak current of OLA was remarkably enhanced by MWCNT/DMF modified GCE. ► The sensor showed high sensitivity, well reproducibility and anti-jamming ability. ► The method was satisfactorily employed to analyze OLA in fishery water.