“…Therefore, it is essential to detect the presence of SEM in food samples to assess intake risks and to monitor the abuse of illegal NFZ. 13 Until now, various approaches such as high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS), 14,15 enzyme-linked immunoassay (ELISA), 16 immunochromatography assay (ICA), 17,18 surface-enhanced Raman scanning (SERS) immunoassay, 19 electrochemical sensing, [20][21][22] and nitrogen stable isotope ratio analysis (NSIRA) 23 have been developed. Although these instrument-based analytic methods exhibit high sensitivity and accuracy, they often involve limitations such as tedious sample pre-treatment processes, professional technical personnel, expensive equipment, complicated operations, long detection times, and time-consuming derivatization steps (Scheme 1B).…”