College of Chemistry and Chemical Engineering, College of Guangling, Yangzhou University, Yangzhou, 225002, China.
Anal Methods. 2022 May 19;14(19):1904-1912. doi: 10.1039/d2ay00359g.
An effective method based on an imidazole ionic liquid functionalized ZIF-67 molecularly imprinted solid-phase extractant (ZIF-67@[Bmim][Br]@MIP) coupled with high performance liquid chromatography (HPLC) for the separation/analysis of bisphenol A (BPA) was established. ZIF-67@[Bmim][Br]@MIP was characterized by FTIR, XRD, SEM, TEM and BET. Several important factors, such as pH, amount of extractant, extraction time, and types of eluents were investigated in detail. Under the optimal conditions, the linear range of the method was 0.01-20.00 μg mL, the detection limit was 5.0 ng mL, and the linear correlation was good ( = 0.9994). The detection of BPA in mineral water bottles, milk cartons and milk tea cups proved that the method was simple and effective, and could be used to separate and analyze BPA in real samples.
建立了一种基于咪唑离子液体功能化 ZIF-67 分子印迹固相萃取剂（ZIF-67@[Bmim][Br]@MIP）与高效液相色谱（HPLC）联用的分离/分析双酚 A（BPA）的有效方法。通过傅里叶变换红外光谱（FTIR）、X 射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）和比表面积与孔隙度分析仪（BET）对 ZIF-67@[Bmim][Br]@MIP 进行了表征。详细考察了 pH 值、萃取剂用量、萃取时间和洗脱液类型等重要因素。在最佳条件下，该方法的线性范围为 0.01-20.00 μg mL，检测限为 5.0 ng mL，线性相关性良好（ = 0.9994）。矿泉水瓶、牛奶纸盒和奶茶杯中的 BPA 检测证明，该方法简单有效，可用于分离和分析实际样品中的 BPA。
