▎ 摘　　要

A smartphone-based wireless electrochemical sensor for portable and fast detection of sulfonamides (SAs) using home-made flexible integrated three-electrode of laser-induced porous graphene (LIPG) modified with two-dimensional hexagonal boron nitride (2D h-BN) as working electrode was developed. The flexible integrated three-electrode of LIPG was prepared by direct laser-writing technique on polyimide (PI) film. The reference electrode was handmade by casting a silver and silver chloride ink on the surface of the LIPG. With excellent electrochemical performance, the pocket, disposable, cost-effective, flexible three-electrode constructed a novel sensing platform to detect sulfamethoxazole (SMZ) at a lower electrochemical oxidation potential of 0.56 V. The developed sensor displayed a good linear range from 0.5 to 362.5 mu M, a low limit of detection was 0.011 mu M and satisfactory recovery in the range of 97.5% - 101.3% in milk and lake water. This sensor was also applied for the detection of four other SAs (sulfanilamide, sulfapyridine, sulfadimidine, sulfisoxazole). This work will be valuable to the development of a simple, fast sensing platforms for outdoor detection and online monitoring in food safety and environmental safety areas.