Henan International Joint Laboratory of Medicinal Plants Utilization, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, Henan, China.
Henan International Joint Laboratory of Medicinal Plants Utilization, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, Henan, China.
J Chromatogr A. 2023 Nov 22;1711:464450. doi: 10.1016/j.chroma.2023.464450. Epub 2023 Oct 13.
The three-dimensional (3D) rose-like zinc oxide (ZnO) material was prepared by a simple one-step CTAB-assisted hydrothermal strategy and used as a headspace solid-phase microextraction (HS-SPME) coating. Polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs) were analyzed by gas chromatography with flame ionization detector (GC-FID), and conclusively applied to ultrasensitive detection in lake and river water. Compared with one-dimensional (1D) pencil-like ZnO, the layer-by-layer petal-like structure could fully expose mass adsorption sites on the surface, which could significantly improve the adsorption. The enrichment factors with 7535-8595 for PCBs and 3855-7320 for PAHs were achieved. The established method provided a satisfactory linear range (0.005-30 ng·mL), coefficient (R > 0.9978), ultra-low limit detection (1-3 pg·mL), and long service life (≥ 150 times). The recoveries of 83.42-120.86 % were obtained in the real detection application of lake and river water. This work demonstrated that 3D rose-like ZnO with low cost, simple synthesis, fast extraction ability and high enrichment performance was an ideal coating material, which was hoped to enrich other compounds with similar structures with PCBs and PAHs.
三维（3D）玫瑰状氧化锌（ZnO）材料通过简单的一步 CTAB 辅助水热策略制备，并用作顶空固相微萃取（HS-SPME）涂层。多氯联苯（PCBs）和多环芳烃（PAHs）通过气相色谱-火焰离子化检测器（GC-FID）进行分析，并最终应用于湖泊和河水中的超灵敏检测。与一维（1D）铅笔状 ZnO 相比，层层花瓣状结构可以充分暴露表面上的大量吸附位点，从而显著提高吸附能力。PCBs 的富集因子为 7535-8595，PAHs 的为 3855-7320。所建立的方法提供了令人满意的线性范围（0.005-30ng·mL）、系数（R>0.9978）、超低检测限（1-3pg·mL）和长使用寿命（≥150 次）。在湖泊和河水的实际检测应用中，回收率为 83.42-120.86%。这项工作表明，具有低成本、简单合成、快速萃取能力和高富集性能的 3D 玫瑰状 ZnO 是一种理想的涂层材料，有望富集与 PCBs 和 PAHs 具有相似结构的其他化合物。
