Design of portable food contaminant detection system based on electrochemical sensing

The portable food pollutant detection system can effectively detect safety hazards during food processing, storage, and sales, thereby minimizing potential hazards. Although the country has strengthened quality control measures, problems such as antibiotic residues, excessive use of food coloring and food additives still exist. The electrolytic cell used in this article adopts a three electrode system. The portable food pollutant detection system includes a constant current meter (which can control the electrode potential), a waveform generation device that generates stimulation signals, and can measure, display, and process current, voltage, and time. In the comparison of detection limits for amaranth red using different electrode materials, the highest detection limit for C/Pt/Agcl is 2.6mol/L, and the highest detection limit for MWCNT/Agcl is 6.4mol/L. Relatively speaking, the detection limit for C/Pt/Agcl is relatively low. In this paper, the portable food pollutant detection system based on electrochemical sensing has high sensitivity. Although the system performs well, it still needs to be improved and perfected in terms of stability, sensor lifespan, and detection of various pollutants. In the future, efforts should be focused on improving the reliability and applicability of the system.