College of Food Science and Technology, Hebei Agricultural University, Baoding 071001, China; Department of Chemistry, College of Science, Hebei Agricultural University, Baoding 071001, China.
Department of Chemistry, College of Science, Hebei Agricultural University, Baoding 071001, China.
Food Chem. 2023 Jan 1;398:133855. doi: 10.1016/j.foodchem.2022.133855. Epub 2022 Aug 4.
A new carbazole-based spherical microporous polymer (Car-BDA-POP) was fabricated by employing 4,4'-biphenyldicarboxaldehyde (BDA) and carbazole as monomers via a one-step and non-metal catalyst synthetic approach. It was then explored as an adsorbent for solid-phase extraction (SPE) of some chlorophenols (CPs). Under the optimized extraction conditions, the established Car-BDA-POP-based SPE coupled with high-performance liquid chromatography ultraviolet detection showed good linearity in the concentration range of 0.1-200 ng mL for water samples and 5.0-800 ng g for honey samples with the determination coefficients (r) ≥ 0.9995 for the analytes. The limits of detection (S/N = 3) for the analytes were in the range of 0.03-0.06 ng mL for water samples and 1.50-2.50 ng g for honey samples. The method recoveries varied from 80.0 % to 116 % in spiked real samples, with the relative standard deviations less than 9.6 %. In addition, the possible adsorption mechanism, adsorption kinetics, and adsorption isotherms were also investigated.
一种新型的基于咔唑的球形微孔聚合物（Car-BDA-POP）是通过一步法和非金属催化剂合成方法，以 4,4'-联苯二甲醛（BDA）和咔唑为单体制备的。然后，将其作为固相萃取（SPE）一些氯酚（CPs）的吸附剂进行了探索。在优化的萃取条件下，建立的基于 Car-BDA-POP 的 SPE 与高效液相色谱紫外检测相结合，在水样中的浓度范围为 0.1-200ngmL，蜂蜜样品中的浓度范围为 5.0-800ngg 时，分析物的线性良好，相关系数（r）≥0.9995。分析物的检出限（S/N=3）在水样中的范围为 0.03-0.06ngmL，蜂蜜样品中的范围为 1.50-2.50ngg。在加标实际样品中的方法回收率在 80.0%至 116%之间，相对标准偏差小于 9.6%。此外，还研究了可能的吸附机制、吸附动力学和吸附等温线。
