Original: https://doi.org/10.5599/admet.2968
Background and purpose: Detecting uric acid (URA) and dopamine (DPA) is challenging because their oxidation signals strongly overlap. Tungsten disulfide nanostructures are promising electrode materials to address this issue due to their low toxicity, low cost, easy fabrication, and high catalytic activity.
Experimental approach: We developed an electrochemical sensor by modifying a glassy carbon electrode with tungsten disulfide nanostructures for voltammetric detection.
Key results: Electrochemical tests showed that the sensor performed very well, with a wide linear detection range (0.03–600.0 μM) and a low limit of detection (10 nM) for dopamine.
Conclusion: The sensor successfully detected target compounds in real samples, including injections and urine, with good recovery rates, demonstrating its practical applicability. This work not only provides an effective approach for fabricating tungsten disulfide–modified electrodes but also shows strong potential for future use in bioanalytical sensing and clinical diagnostics.