Enhanced Selectivity of Colorimetric Molecularly Imprinted Polymer Paper-based Sensor for Detection of Bisphenol-A in Plastic Bottles
摘要
This research has developed a paper-based sensor incorporating molecularly imprinted polymer (MIP) technology for the detection of bisphenol-A (BPA) in plastic bottles. The characterization of BPA-molecular imprinted polymers on paper (BPA-MIP/FP) demonstrated the successful deposition of MIP on the paper substrate. The binding properties analysis revealed that the BPA-MIP/FP sensor exhibited significantly enhanced BPA adsorption capacity (29.04 ± 1.45 μmol/cm2) compared to unmodified paper. The sensor demonstrated excellent performance characteristics, including high sensitivity with a detection limit of 0.053 ng/mL and superior selectivity for BPA over other bisphenol compound derivatives. The results of the actual samples showed that the sensor has good stability with a RSD of 3.7% and accuracy with recovery rates in the range from 93.46% to 102.06%.