Li Shuofeng, Zhou Xin, Wang Qianqian, Liu Weihua, Hao Lin, Wang Chun, Wang Zhi, Wu Qiuhua
College of Food Science and Technology, Hebei Agricultural University, Baoding 071001, China; College of Science, Hebei Agricultural University, Baoding 071001, China.
Department of Science & Technology, Hebei Agricultural University, Huanghua 061100, China.
J Chromatogr A. 2022 Oct 25;1682:463527. doi: 10.1016/j.chroma.2022.463527. Epub 2022 Sep 22.
Design and fabrication of functionalized hypercrosslinked polymers (HCPs) for enhancing their performance by using green renewable monomers has attracted considerable research interest. In this study, hydroxyl‑functional HCP (labeled as OHHCP) was prepared via the knitting method by applying natural naringenin as a monomer for the first time. Due to the good hydrophilicity and strong H-bonding ability, the OHHCP showed high extraction capacity for nitroimidazoles. Thus, it was successfully applied as a potent adsorbent for solid phase extraction of five nitroimidazoles in water, honey and chicken meat, followed by high-performance liquid chromatography-diode array detector analysis. At the optimized conditions, the limit of detections (S/N = 3) of the proposed method for water, honey and chicken samples were 0.02 - 0.06 ng mL, 0.5 - 1.0 ng g and 0.8 - 1.0 ng g, respectively. The recoveries were 80.0 - 110%, and the relative standard deviations were below 10.0%. The OHHCP also displayed good application prospects for other organic compounds with H-bonding capability. This study highlights the facile preparation of OH-functionalized HCPs from renewable and natural resources as potent adsorbents for polar compounds.
通过使用绿色可再生单体来设计和制备功能化超交联聚合物（HCPs）以提高其性能已引起了相当大的研究兴趣。在本研究中，首次通过编织法，以天然柚皮素作为单体，制备了羟基功能化的HCP（标记为OHHCP）。由于具有良好的亲水性和较强的氢键结合能力，OHHCP对硝基咪唑类化合物显示出高萃取能力。因此，它被成功用作一种高效吸附剂，用于固相萃取水、蜂蜜和鸡肉中的五种硝基咪唑类化合物，随后进行高效液相色谱-二极管阵列检测器分析。在优化条件下，该方法对水、蜂蜜和鸡肉样品的检测限（S/N = 3）分别为0.02 - 0.06 ng/mL、0.5 - 1.0 ng/g和0.8 - 1.0 ng/g。回收率为80.0 - 110%，相对标准偏差低于10.0%。OHHCP对其他具有氢键结合能力的有机化合物也显示出良好的应用前景。本研究突出了从可再生自然资源简便制备羟基功能化HCPs作为极性化合物高效吸附剂的方法。
