High-temperature calcined Mn-MOF derivative for electrochemical detection of flumioxazin in environmental and food samples

Flumioxazin, a nitrophenyl herbicide widely used in agriculture, poses potential health risks due to its residue in agricultural products. This study elucidates the fabrication of a novel electrochemical sensor, MnO@C , specifically designed for the efficient detection of flumioxazin. The sensor MnO@C was created by annealing Mn-BTC , synthesized via a straightforward solvothermal method. The electrochemical behavior of MnO@C for detecting flumioxazin was assessed through DPV. The findings revealed that MnO@C demonstrated a wide detection range, achieving an exceptionally low LOD at 597 fmol/L for flumioxazin. Moreover, MnO@C exhibited exceptional duplicability, reliability, and anti-interference ability. The sensor MnO@C was also effectively utilized for the quantitative detection of flumioxazin in diverse samples. The results highlight the substantially practical utility of MnO@C in food and environment detection, which provides broad-spectrum environmental resistance and fast, efficient detection for flumioxazin residue. Additionally, a thorough analysis of the mechanism of MnO@C for monitoring flumioxazin was undertaken.