硼酸官能化共价有机框架用于高效捕获痕量邻苯二甲酸盐。

IF 3.8 2区 化学 Q1 BIOCHEMICAL RESEARCH METHODS Journal of Chromatography A Pub Date : 2024-10-28 DOI:10.1016/j.chroma.2024.465481
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引用次数: 0

摘要

为了提高母体共价有机框架(COFs)的富集性能,首次采用简单的静置法获得了硼酸官能化的COF(COF-B(OH)2)。所获得的 COF-B(OH)2 具有纯 COF 所不具备的新特性,被用作固相微萃取(SPME)涂层材料,用于高效富集痕量内分泌干扰物质邻苯二甲酸盐(PAEs)。与纯 COF 相比,COF-B(OH)2 新增的独特孔隙结构和硼酸作用位点,以及 COF 原始框架继承的大比表面积和丰富的苯环结构的协同作用,赋予了 COF-B(OH)2 更强的 PAEs 富集性能。将 COF-B(OH)2与气相色谱-质谱(GC-MS)联用,在 0.1-3000 ng l-1 的宽浓度范围内对 PAEs 具有良好的线性关系(R2, 0.9916-0.9998)。所开发的方法被成功用于检测牛奶和水样品中的痕量 PAEs,回收率高(90.6-111.3%)。这项工作为开发用于富集环境污染物的高性能材料提供了一种可持续的方法。
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Boronic acid functionalized of covalent organic framework for high performance capture of trace phthalates
In order to improve the enrichment performance of parent covalent organic frameworks (COFs), boronic acid functionalized of COF (COF-B(OH)2) was obtained by a simple standing method for the first time. The obtained COF-B(OH)2 exhibited the new characteristics that were not possessed by pure COF and was employed as the solid phase microextraction (SPME) coating material for highly efficient enrichment of trace endocrine disruptors phthalates (PAEs). Compared to pure COF, the synergistic effect of the newly emerged unique pore structure and boric acid interaction sites, and the large specific surface area and the abundant benzene ring structure inherited by original COF framework endowed COF-B(OH)2 with enhanced enrichment performance for PAEs. Combined with gas chromatography-mass spectrometry (GC–MS), COF-B(OH)2 exhibited the good linearity over a wide concentration of 0.1–3000 ng l-1 with good coefficients (R2, 0.9916–0.9998) for PAEs. The developed method was successfully employed for detection of trace PAEs in milk and water samples, demonstrating high recoveries (90.6–111.3 %). This work provides a sustainable approach to developing high-performance materials for enriching environmental pollutants.
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来源期刊
Journal of Chromatography A
Journal of Chromatography A 化学-分析化学
CiteScore
7.90
自引率
14.60%
发文量
742
审稿时长
45 days
期刊介绍: The Journal of Chromatography A provides a forum for the publication of original research and critical reviews on all aspects of fundamental and applied separation science. The scope of the journal includes chromatography and related techniques, electromigration techniques (e.g. electrophoresis, electrochromatography), hyphenated and other multi-dimensional techniques, sample preparation, and detection methods such as mass spectrometry. Contributions consist mainly of research papers dealing with the theory of separation methods, instrumental developments and analytical and preparative applications of general interest.
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