School of Environmental & Municipal Engineering, State-Local Joint Engineering Research Center of Urban Sewage Treatment and Resource Recovery, Qingdao University of Technology, Qingdao 266033, China.
School of Environmental & Municipal Engineering, State-Local Joint Engineering Research Center of Urban Sewage Treatment and Resource Recovery, Qingdao University of Technology, Qingdao 266033, China.
J Hazard Mater. 2022 Feb 15;424(Pt D):127687. doi: 10.1016/j.jhazmat.2021.127687. Epub 2021 Nov 4.
A simple method based on magnetic solid-phase extraction (MSPE) was developed for the simultaneous extraction of eleven emerging aromatic disinfection byproducts (DBPs) in water samples coupled with ultrahigh-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) determination. A magnetic covalent-organic framework (COF) material, namely, FeO @TpBD, was facilely synthesized and fully characterized, followed by an MSPE process. Several important MSPE parameters, such as the magnetic ratio, FeO @TpBD amount and sample pH, were systematically investigated. Under optimal conditions, the limits of detection and quantification of this COF-MSPE-UHPLC-MS/MS method were as low as 0.07-1.81 ng/L and 0.24-5.99 ng/L, respectively. Good precision was obtained with relative standard deviations (RSDs) of 1.3-10.9% (intraday) and 4.3-15.9% (interday). Furthermore, the validated method was proven applicable to real water samples; for example, the recoveries were 86.8-115.1% for the secondary effluent, and several DBPs in swimming pool water were detected. Notably, the MSPE process required only 7 min, ensuring that the DBPs were relatively stable during the whole analysis process and that FeO @TpBD demonstrated excellent reusability. The COF-based MSPE method with simplicity, rapidity and efficiency provided an ideal sample pretreatment alternative to determine trace DBPs in complex matrices.
一种基于磁固相萃取（MSPE）的简单方法被开发用于同时提取水样中 11 种新兴的芳香族消毒副产物（DBPs），并结合超高效液相色谱-串联质谱（UHPLC-MS/MS）进行测定。一种磁性共价有机骨架（COF）材料，即 FeO@TpBD，被简便地合成并进行了全面的表征，随后进行了 MSPE 过程。系统研究了几个重要的 MSPE 参数，如磁比、FeO@TpBD 用量和样品 pH 值。在最佳条件下，该 COF-MSPE-UHPLC-MS/MS 方法的检测限和定量限低至 0.07-1.81 ng/L 和 0.24-5.99 ng/L。该方法具有良好的精密度，日内相对标准偏差（RSD）为 1.3-10.9%，日间 RSD 为 4.3-15.9%。此外，该验证方法被证明适用于实际水样；例如，二级出水的回收率为 86.8-115.1%，并且在游泳池水中检测到了几种 DBPs。值得注意的是，MSPE 过程仅需 7 分钟，确保了 DBPs 在整个分析过程中相对稳定，并且 FeO@TpBD 表现出优异的可重复使用性。该基于 COF 的 MSPE 方法具有简单、快速和高效的特点，为复杂基质中痕量 DBPs 的测定提供了一种理想的样品预处理替代方法。
