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Abstract：
In this work, we test metal-organic frameworks (MOFs) as sorbents in the solid-phase extraction (SPE) technique to determine chemical warfare agents (CWAs) and their related compounds in water samples. During this study, we used 13 target compounds to test the selectivity of MOFs thoroughly. Three MOFs were used: MIL-100(Fe), ZIF-8(Zn), and UiO-66(Zr). The obtained materials were characterized using FT-IR/ATR, SEM, and XRD. CWA\'s and related compounds were analyzed using gas chromatography coupled with tandem mass spectrometry (GC-MS/MS). The effect of the type of elution solvent and the amount of sorbent (MOFs) in the column on the efficiency of the conducted extraction were verified. The LOD ranged from 0.04 to 7.54 ng mL-1, and the linearity range for the analytes tested extended from 0.11/22.62 (depending on the compound) to 1000 ng mL-1. It was found that MOFs showed the most excellent selectivity to compounds having aromatic rings in their structure or a \"spread\" spatial structure. The best recoveries were obtained for DPAA, CAP, and malathion. Environmental water samples collected from the Baltic Sea were analyzed using an optimized procedure to verify the developed method\'s usefulness.
摘要：
在这项工作中,我们在固相萃取（SPE）技术中测试金属有机骨架（MOFs）作为吸附剂，以确定水样中的化学战剂（CWA）及其相关化合物。在这项研究中,我们使用13个目标化合物对MOFs的选择性进行了全面测试。使用了三种MOF：MIL-100（Fe），ZIF-8(Zn),和UiO-66(Zr)。使用FT-IR/ATR对所得材料进行表征，SEM,和XRD。使用气相色谱-串联质谱(GC-MS/MS)分析CWA和相关化合物。验证了洗脱溶剂的类型和柱中吸附剂（MOF）的量对进行的萃取效率的影响。LOD范围为0.04至7.54ngmL-1，所测试分析物的线性范围从0.11/22.62（取决于化合物）扩展到1000ngmL-1。发现MOFs对在其结构或“扩展”空间结构中具有芳环的化合物显示出最优异的选择性。获得了DPAA的最佳回收率，CAP,还有马拉硫磷.使用优化的程序分析了从波罗的海收集的环境水样，以验证所开发方法的有用性。
