Development of monitoring methods for phenolic endocrine disrupting chemicals (EDCs) like bisphenol A is imperative, as they disrupt homeostasis of the body's endocrine system, posing serious threats to human health. Herein, a natural flavonoid based hyper cross-linked polymer (STF-HCP1) was synthesized for the first time. STF-HCP1 achieves excellent adsorption of phenolic EDCs (bisphenol A, p -tert-butylphenol, bisphenol B, bisphenol F) through hydrogen bonding and π–π interactions. STF-HCP1 based solid phase extraction was coupled with liquid chromatography-mass spectrometry for sensitive quantification of trace phenolic EDCs in chicken and fish samples. Under optimum conditions, this method showed lower limit of detection (0.58–2.1 ng g −1 for chickens and 0.70–3.2 ng g −1 for fish), satisfactory spiked recovery (91.1–106 %) and high precision (relative standard deviation ≤6.7 %). Beyond offering a viable method for sensitive detection of phenolic EDCs, this study highlights a novel strategy to prepare effective adsorbents using natural raw materials.
AnYuan Tong,Nan Xu,Ting Yan,FuBin Chen,ChunYan Yang
Herein, silica nanoparticles were employed as the carrier for surface molecular imprinted polymer with high selectivity for Tetrabromobisphenol A (TBBPA). Nitrogen-doped graphene quantum dots (NGQDs) were incorporated to enhance the chemiluminescence intensity of the Luminol-H 2 O 2 system, as TBBPA was found to effectively suppress the chemiluminescence signal of this system. Based on these principles, a molecular imprinting technique-chemiluminescence (MIT-CL) sensor was developed by integrating the NGQDs-sensitized Luminol-H 2 O 2 chemiluminescence system with the specific recognition material SiO 2 @TBBPA MIP was constructed to detect TBBPA in environmental water samples. Under the optimal conditions, the sensor exhibited a linear detection range of 8.0 × 10 −10 -2.0 × 10 −8 mol/L, with the detection limit (3σ/k) of 3.2 × 10 −11 mol/L. The illustrated MIT-CL method was utilized for the detection of TBBPA in water samples, yielding satisfactory recovery rates ranging from 96.25 % to 107.50 %.
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