One-step synthesis of poly(3,4-ethylenedioxythiophene)-Au composites and their application for the detection of nitrite

► PEDOT-AuNPs composites were synthesized by a simple one-step method. ► The modified electrode shows high electrochemical activity for nitrite. ► The modified electrode was successfully applied to the determination of nitrite. ► Low detection limit with wide linear range could be obtained.