Dong Zong-Mu, Zhang Peiyi, Sun Tong, Xia Qian, Wu Jian-Feng, Zhao Guang-Chao
School of Ecology and Environment, Anhui Normal University, Wuhu 241000, China.
Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-Founded by Anhui Province and Ministry of Education, Anhui Normal University, Wuhu 241000, China.
Gels. 2022 Sep 25;8(10):610. doi: 10.3390/gels8100610.
In this study, a hybrid composite featuring zeolitic imidazolate framework-8/carbon aerogel (ZIF-8/CA) was synthesized via in situ nucleation and growth of ZIF-8 nanoparticles inside carbon aerogels. The novel material was used as the solid-phase microextraction (SPME) coating for the five phthalic acid esters (PAEs) detection by coupling with a gas chromatography-flame ionization detector (GC-FID). Compared with bare carbon aerogel, the ZIF-8/CA presented the best performance, which is attributed to the unique advantages between the high surface area of CA and high hydrophobic properties, the thermal stability of ZIF-8, and their synergistic adsorption effects, such as molecular penetration, hydrogen bond, and π-π stacking interactions. Under the optimized conditions, the as-proposed ZIF-8/CA fiber provided a wide linearity range from 0.2 to 1000 μg L and a low detection limit of 0.17-0.48 μg L for PAEs analysis. The intra-day and inter-day of signal fiber and the fiber-fiber relative standard deviations were observed in the ranges of 3.50-8.16%, 5.02-10.57%, and 5.66-12.11%, respectively. The method was applied to the determination of five PAEs in plastic bottled and river water samples.
在本研究中，通过在碳气凝胶内部原位成核和生长沸石咪唑酯骨架-8（ZIF-8）纳米颗粒，合成了一种具有ZIF-8/碳气凝胶（ZIF-8/CA）的混合复合材料。这种新型材料被用作固相微萃取（SPME）涂层，与气相色谱-火焰离子化检测器（GC-FID）联用，用于检测五种邻苯二甲酸酯（PAEs）。与裸碳气凝胶相比，ZIF-8/CA表现出最佳性能，这归因于CA的高比表面积与高疏水性、ZIF-8的热稳定性以及它们的协同吸附效应（如分子渗透、氢键和π-π堆积相互作用）之间的独特优势。在优化条件下，所提出的ZIF-8/CA纤维对PAEs分析提供了0.2至1000 μg/L的宽线性范围和0.17 - 0.48 μg/L的低检测限。信号纤维的日内和日间以及纤维间相对标准偏差分别在3.50 - 8.16%、5.02 - 10.57%和5.66 - 12.11%范围内。该方法应用于塑料瓶装水和河水样品中五种PAEs的测定。
