Preparation of an electrochemical sensor using screen-printed electrode for the determination of bisphenol a

Bisphenol A (BPA), a plastic additive widely used in many polymeric products, disrupts the endocrine system by interfering with hormonal and homeostatic functions. Due to concerns about the health effects of BPA, it is crucial to detect BPA in order to control this potential risk in a timely manner. To this end, a lab-made, disposable sensor platform was developed to quickly and easily determine BPA using a ternary nanocomposite containing tungsten disulfide (WS2), magnetite (Fe3O4) and reduced graphene oxide (rGO) to enhance the electroactive properties of the sensor. Comprehensive structural and electrochemical characterizations were conducted to evaluate the performance of each nanomaterial constituting the ternary composite. The sensor demonstrated a good linear response ranging from 0.05 μM to 50 μM with a limit of detection of 0.03 μM. Additionally, the sensor exhibited acceptable stability, strong anti-interference ability, good reproducibility and repeatability. The proposed sensor was also utilized to detect BPA in tap and spring water samples with a satisfied recovery rates from 103.50% to 105.25%. These findings suggests the sensor's potential as a reliable platform for monitoring BPA. These satisfying results confirmed that the ternary composite consisting of WS2, Fe3O4, and rGO offers a significant guidance in the electrochemical monitoring of BPA.