Synthesis of rGO@PDA@AuNPs for an effective electrochemical chloramphenicol sensor

An efficient electrochemical sensor for the detection of chloramphenicol was prepared by using [email protected]@AuNPs composite. The electrochemical properties of [email protected]@AuNPs were evaluated by cyclic voltammetry and differential pulse voltammetry methods. Under the best conditions, the detection range of [email protected]@AuNPs was wide (0.1–100 μM), and the detection limit was low (0.058 μM), with excellent selectivity, stability and reproducibility. In addition, an electrochemical sensor based on [email protected]@AuNPs can be used for the determination of chloramphenicol in milk with good results.