Department of Chemistry, College of Science, Hebei Agricultural University, Baoding 071001, China.
Department of Food Science, College of Food Science and Technology, Hebei Agricultural University, Baoding 071001, China.
J Chromatogr A. 2023 Oct 25;1709:464385. doi: 10.1016/j.chroma.2023.464385. Epub 2023 Sep 15.
Two magnetic phosphazene-based hyper crosslinked polymers (M-HCP-OP-TMC and M-HCP-OP-TCL) were newly synthesized by the reaction of Friedel-Crafts acylation, and the M-HCP-OP-TMC showed an excellent extraction capability and rapid adsorption kinetics for chlorophenols as an adsorbent. Then, an efficient analytical method was built for the preconcentration and quantification of chlorophenols from water and peach juice samples by combining M-HCP-OP-TMC based magnetic solid-phase extraction (MSPE) with HPLC-UV detection. The linear response range for the chlorophenols by the method was 0.21-100.0 ng mL for water sample, and 0.36-100.0 ng mL for peach juice sample. The detection limits (S/N = 3) of the proposed method for the analytes were 0.07- 0.25 ng mL and 0.12-0.45 ng mL for water and peach juice samples, respectively. The method recoveries for the spiked samples were in the range of 93.1%-117.1%, and the relative standard deviations were less than 10%. The adsorption of the chlorophenols with the M-HCP-OP-TMC was mainly contributed by π-π stacking and hydrophobic interactions. The results indicate that the method was sensitive and accurate enough for the determination of the chlorophenols from real samples.
两种基于磁性膦嗪的超交联聚合物（M-HCP-OP-TMC 和 M-HCP-OP-TCL）通过 Friedel-Crafts 酰化反应新合成，M-HCP-OP-TMC 作为吸附剂对氯酚类具有优异的萃取能力和快速吸附动力学。然后，通过将基于 M-HCP-OP-TMC 的磁性固相萃取（MSPE）与 HPLC-UV 检测相结合，建立了一种从水样和桃汁样品中预浓缩和定量测定氯酚类的有效分析方法。该方法对水样中氯酚类的线性响应范围为 0.21-100.0ng mL，对桃汁样品的线性响应范围为 0.36-100.0ng mL。该方法对分析物的检测限（S/N=3）分别为 0.07-0.25ng mL 和 0.12-0.45ng mL，用于水样和桃汁样品。加标样品的回收率在 93.1%-117.1%范围内，相对标准偏差小于 10%。M-HCP-OP-TMC 对氯酚类的吸附主要由π-π堆积和疏水相互作用贡献。结果表明，该方法对实际样品中氯酚类的测定具有足够的灵敏度和准确性。
