An ion imprinted electrochemical sensor based on flower‐like gold nanoparticles for the detection of trace arsenic(III) ions in water and food samples

A selective and sensitive electrode based on Au−S bonds between As(III) ion‐imprinted polymer (IIP) and the flower‐like gold nanoparticles (FL‐AuNPs) had been rationally developed for detecting As(III) by using the square wave voltammetry (SWV) method. Under optimized measurement conditions, the prepared electrochemical sensor exhibited obvious detection performance of As(III) in the range of 0.009 μg/L–0.50 μg/L with a relatively low detection limit of 0.015 μg/L. Furthermore, the imprinted electrochemical sensor displayed good reusability, excellent specificity, and demonstrated high potential for environmental control with a recovery rate between 80.7 % and 113.3 %.