Se pu = Chinese journal of chromatography最新文献

{"title":"[Irreversible azo covalent organic framework for adsorption of 2，5-dichloro-1，4-benzoquinone from water].","authors":"Xu-Qin Ran, Xu Yang, Chao-Yi Long, Hai-Long Qian, Xiu-Ping Yan","doi":"10.3724/SP.J.1123.2026.01012","DOIUrl":"10.3724/SP.J.1123.2026.01012","url":null,"abstract":"<p><p>The disinfection of water is a fundamental and indispensable process in modern public health infrastructure. It plays a pivotal role in safeguarding drinking water safety by inactivating pathogenic microorganisms such as bacteria and viruses， thereby preventing waterborne disease outbreaks. However， a significant and well-documented drawback of chemical disinfection， particularly with chlorine-based agents， is the formation of disinfection byproducts （DBPs）. These DBPs are generated through complex reactions between disinfectants and natural organic matter present in source water. Among the vast array of identified DBPs， halogenated compounds are of particular concern due to their enhanced toxicity and persistence. 2，5-Dichloro-1，4-benzoquinone （2，5-DCBQ） is a prominent representative of these toxic halogenated DBPs. Toxicological studies have conclusively demonstrated that 2，5-DCBQ can induce pronounced oxidative stress in mammalian cells. This leads to a cascade of detrimental effects including a marked increase in intracellular reactive oxygen species. Subsequently， the detrimental effects may cause DNA single-strand breaks， oxidative base damage， and chromosomal aberrations. Consequently， developing effective technologies for the targeted removal of 2，5-DCBQ from aqueous environments is of paramount importance for mitigating its associated health risks. Current removal strategies， including adsorption using solid-phase materials， often suffer from several limitations. These include reliance on a single interaction mechanism， modest adsorption capacities， or slow kinetics. This hinders their practical application for efficient 2，5-DCBQ control. To address these challenges， this study presents the design， synthesis， and application of a novel porous organic adsorbent. Termed Tp-Azo， this adsorbent is specifically engineered for the rapid and efficient removal of 2，5-DCBQ. Tp-Azo was synthesized via a condensation reaction and possesses an exceptionally high specific surface area of 824.5 m<sup>2</sup>/g. It incorporates a high density of electron-rich azo （-N=N-） functional groups within its framework. These groups act as strong electron donors， enabling potent electron donor-acceptor interactions with the electron-deficient quinone ring of 2，5-DCBQ. Furthermore， the predominantly aromatic backbone of Tp-Azo facilitates strong <i>π-π</i> stacking interactions with the aromatic structure of 2，5-DCBQ. The inherent hydrophobicity of Tp-Azo promotes additional adsorption via hydrophobic effects. Critically， the material possesses an average pore diameter of approximately 2.0 nm. It is substantially larger than the estimated molecular kinetic diameter of 2，5-DCBQ. This suitable pore size ensures minimal diffusion resistance， allowing 2，5-DCBQ to rapidly access the internal adsorption sites.The adsorption performance of Tp-Azo was systematically evaluated under various conditions. Under pH 2-3， the adsorption efficiency was reduced. This is att","PeriodicalId":101336,"journal":{"name":"Se pu = Chinese journal of chromatography","volume":"44 10","pages":"1243-1250"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13659873/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149170783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Recent advances in the applications of covalent organic frameworks for strategic critical metal recovery： focusing on rare earths and dispersed metals].","authors":"Shuang Zhang, Ming-Xia Sun, Hong-Deng Qiu, Jia Chen","doi":"10.3724/SP.J.1123.2026.01027","DOIUrl":"10.3724/SP.J.1123.2026.01027","url":null,"abstract":"<p><p>Strategic critical metals， such as rare earths and dispersed metals， are indispensable key raw materials for high-tech industries， including new energy and electronics. Although China is rich in mineral resources （especially rare earth minerals）， the supply has always been a concern due to extremely uneven distribution and the significant environmental pressures caused by the mining process. At the same time， with the rapid development of related industries， the amount of waste equipment containing these metals （such as discarded batteries and used NdFeB magnets） and industrial wastewater has increased sharply. Therefore， efficiently recovering strategic critical metals from secondary resources is of great importance. Among various recovery processes， solvent extraction and precipitation methods have been widely applied in systems with conventional concentrations and relatively simple components due to their mature technology and relatively high separation efficiency. However， these methods face challenges such as low efficiency， poor selectivity， and high environmental burden when treating low-concentration， multi-component systems. Adsorption methods， with their simple operation， low energy consumption， and environmentally friendly characteristics， have become one of the most promising methods for recovering and processing strategic critical metals in extreme industrial systems. By designing or selecting specific adsorbent materials （such as ion-imprinted polymers， functionalized porous materials）， specific adsorption of target metal ions can be achieved， especially enabling efficient separation of desired metals in complex multi-metal solutions. However， this method demands higher requirements for the performance and stability of the adsorbents. Therefore， developing novel adsorbent materials with high selectivity， high adsorption capacity， and environmental friendliness has become a key bottleneck that urgently needs to be overcome in this field. Covalent organic frameworks （COFs） are a fascinating class of crystalline porous organic materials constructed via strong covalent bonds from light elements including carbon， hydrogen， nitrogen， oxygen， and boron. COFs integrate multiple superior properties. They not only possess ultra-high specific surface areas and tunable pore sizes but also exhibit excellent structural designability. Their pore sizes can be adjusted from the nanometer scale to the angstrom level， allowing for the sieving of ions of different sizes through size exclusion effects. Moreover， the organic monomers of COFs contain abundant functional groups， enabling selective recovery based on differences in affinity for metal ions. At the same time， their fully organic frameworks endow numerous COFs with excellent stability in harsh environments such as acids and bases. Thanks to these unique characteristics， COFs have emerged as promising candidates for the highly selective and high-capacity recovery of critical metals in low-","PeriodicalId":101336,"journal":{"name":"Se pu = Chinese journal of chromatography","volume":"44 10","pages":"1162-1174"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13659876/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149171708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Preparation and chiral separation performance evaluation of a high performance liquid chromatography stationary phase based on a ［2+4］-type chiral porous organic cage Pim].","authors":"Chun Chen, Ya-Nan Gong, Bang-Jin Wang, Sheng-Ming Xie, Jun-Hui Zhang, Li-Ming Yuan","doi":"10.3724/SP.J.1123.2026.01017","DOIUrl":"10.3724/SP.J.1123.2026.01017","url":null,"abstract":"<p><p>Porous organic cages （POCs） represent a class of emerging porous materials assembled from discrete three-dimensional cage-like molecules via intermolecular interactions. Owing to their good solubility and unique pore structures， they show great potential in gas adsorption， molecular recognition， separation， catalysis， and sensing. In this study， a phenolphthalein-based tetraaldehyde compound was synthesized via the Duff reaction using phenolphthalein as the substrate and trifluoroacetic acid （TFA） combined with hexamethylenetetramine （HMTA） as the formylation reagent. Subsequently， a ［2+4］-type chiral imine POC， Pim （C<sub>72</sub>H<sub>68</sub>N<sub>8</sub>O<sub>8</sub>）， was constructed by reacting the tetraaldehyde precursor with （1<i>R</i>，2<i>R</i>）-（-）-1，2-diaminocyclohexane via imine condensation. The synthesized Pim was functionalized with alkenyl groups using 5-bromo-1-pentene and then immobilized onto thiol-modified silica via thiol-ene click chemistry to afford a novel chiral stationary phase （CSP） for high performance liquid chromatography （HPLC）. The successful syntheses of tetraaldehyde compound， Pim， and CSP were characterized by nuclear magnetic resonance （NMR）， fourier transform infrared spectroscopy （FT-IR）， electrospray ionization mass spectrometry （ESI-MS）， thermogravimetric analysis （TGA）， and elemental analysis （EA）. The chiral separation performance of this CSP was evaluated under both normal-phase （NP） and reversed-phase （RP） HPLC separation modes. The results demonstrated that the CSP exhibits excellent chiral separation capabilities in both two separation modes. Under NP-HPLC conditions， ten racemates were resolved， including five with baseline separation. Under RP-HPLC conditions， nine racemates were resolved， of which eight achieved baseline separation. Furthermore， this CSP exhibits good chiral separation complementarity with two widely used commercial columns， Chiralpak AD-H and Chiralcel OD-H， showing the ability to resolve some chiral compounds that cannot be resolved or are poorly resolved by the two commercial columns. The effects of analyte injection mass and column temperature on chiral separation performance of the column were also investigated. Additionally， the prepared HPLC column exhibits good repeatability and stability. After hundreds of injections， no significant changes were observed in the retention times and resolutions compared to its initial performance， with relative standard deviations （RSDs， <i>n</i>=5） of ≤1.50% and ≤1.92%， respectively. Meanwhile， after the column was placed and stored for one month， its separation performance showed no significant change compared with that at the initial stage of column use， and the RSDs （<i>n</i>=3） of retention time and resolution were ≤1.88% and ≤2.26%， respectively. This study confirms that the chiral POC Pim is a promising material for HPLC chiral separation， providing significant theoretical and experimental support for the development of novel PO","PeriodicalId":101336,"journal":{"name":"Se pu = Chinese journal of chromatography","volume":"44 10","pages":"1212-1222"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13659878/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149170361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Recent progress on sample pretreatment methods of emerging pollutants in food based on porous framework materials].","authors":"Jia-Qi Huang, Yang-Xia Han, Wei Ha, Ying-Shan Zhang, Yan-Ping Shi","doi":"10.3724/SP.J.1123.2026.01023","DOIUrl":"10.3724/SP.J.1123.2026.01023","url":null,"abstract":"<p><p>Emerging pollutants （ECs） generally refer to chemicals or microorganisms that have known potential toxicity and health hazards. The defining characteristics of ECs include environmental persistence， bioaccumulation and biological toxicity. Primary categories of ECs comprise endocrine disrupting chemicals （EDCs）， persistent organic pollutants （POPs） and antibiotics. Dietary intake represents a predominant pathway for human exposure to ECs. This necessitates the development of highly sensitive and reliable analytical methods. Conventional analytical instruments are fundamental for ECs determination. These include high performance liquid chromatography （HPLC）， liquid chromatography-tandem mass spectrometry （LC-MS/MS）， and gas chromatography-tandem mass spectrometry （GC-MS/MS）. However， the direct analysis of ECs in food remains a significant challenge. This is due to their wide sources， numerous types， complex structures， and ultra-low concentrations alongside substantial matrix interferences. Consequently， it is urgent to develop efficient sample pretreatment techniques to extract， enrich and purify ECs in food， in order to reduce matrix interference and construct the foundation for establishing highly sensitive， accurate， and stable analytical methods. Among various pretreatment techniques， solid-phase extraction （SPE） has gained prominence. It offers notable advantages over liquid-liquid extraction （LLE）. These advantages include simple operation， low consumption of organic solvents and higher enrichment factors. To address specific analytical needs， several advanced SPE modalities have been developed， including magnetic solid-phase extraction （MSPE）， solid-phase microextraction （SPME）， dispersive solid-phase extraction （dSPE）， and stir bar sorptive extraction （SBSE）. Each variant offers unique benefits in terms of automation， speed， or selectivity. The performance of any SPE-based method is fundamentally governed by the adsorbent material. In recent years， porous framework materials have emerged as a revolutionary class of sorbents. They offer exceptional properties for extraction technology. Porous framework materials mainly include metal organic frameworks （MOFs）， covalent organic frameworks （COFs）， and， hydrogen-bonded organic frameworks （HOFs）. These materials are distinguished by their high specific surface area， tunable pore size and abundant sites for functionalization. Their structural periodicity and designability enable precise interaction with target analytes. This review provides a comprehensive and systematic overview of recent progress. It focuses on MOFs， COFs， and HOFs as next-generation adsorbents for ECs analysis. The article begins by introducing the fundamental structures and general properties of these three material classes. It details the synthesis strategies for both pristine materials and their composites. A major emphasis is placed on rational design principles. These principles aim to enhance adsorption performan","PeriodicalId":101336,"journal":{"name":"Se pu = Chinese journal of chromatography","volume":"44 10","pages":"1190-1202"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13659879/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149171706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Trifluoroacetic acid-modulated synthesis of defective UiO-66 for highly efficient removal of sodium <i>p</i>-perfluorous nonenoxybenzenesulfonate].","authors":"Xuan Wang, Chun-Xiao Wang, Yan Xia","doi":"10.3724/SP.J.1123.2026.01019","DOIUrl":"10.3724/SP.J.1123.2026.01019","url":null,"abstract":"&lt;p&gt;&lt;p&gt;Per- and polyfluoroalkyl substances （PFAS）， widely known as \"forever chemicals\"， present a severe and escalating global threat to ecological systems and human health. Their extreme persistence originates from remarkably strong carbon-fluorine bonds， while their amphiphilic nature facilitates widespread environmental dispersal and bioaccumulation. Among them， sodium &lt;i&gt;p&lt;/i&gt;-perfluorous nonenoxybenzenesulfonate （OBS） has been extensively used as a commercial alternative to perfluorooctanesulfonic acid （PFOS）， which is under strict global regulation. However， mounting evidence has revealed that OBS exhibits higher bioaccumulation， higher environmental persistence， and significant cytotoxicity， raising urgent environmental concerns and creating an urgent demand for efficient remediation technologies. To tackle this challenge， this study proposes a defect-engineering strategy for the design of advanced adsorbent materials. Specifically， a series of trifluoroacetic acid （TFA）-modulated UiO-66-type metal-organic frameworks （MOFs）， denoted as U-TFA-10 M， UN-TFA-10 M etc.， were successfully synthesized via a solvothermal method. The intentional introduction of structural defects was designed to increase the density of active sites and tailor surface properties， thereby achieving enhanced pollutant capture performance. Comprehensive characterization confirmed the successful material synthesis and modification. Scanning electron microscopy （SEM） and transmission electron microscopy （TEM） images revealed that U-TFA-10 M and UN-TFA-10 M particles exhibited irregular， fragmented morphologies， a stark contrast to the regular octahedral shape of pristine UiO-66， visually indicating abundant structural defects. X-ray diffraction （XRD） patterns displayed a new broad peak in the 2&lt;i&gt;θ&lt;/i&gt; range of 3°-5°， further confirming defect formation. Fourier-transform infrared spectroscopy （FT-IR） identified characteristic vibrations： peaks at 556 cm&lt;sup&gt;-1&lt;/sup&gt; and 482 cm&lt;sup&gt;-1&lt;/sup&gt; corresponded to Zr-O coordination， while a distinct peak at 1 212 cm&lt;sup&gt;-1&lt;/sup&gt; confirmed the presence of -CF&lt;sub&gt;3&lt;/sub&gt; groups. X-ray photoelectron spectroscopy （XPS） provided definitive evidence， with a clear F 1&lt;i&gt;s&lt;/i&gt; signal verifying the successful incorporation of trifluoromethyl moieties into the MOF framework-a critical modification for enabling specific interactions with the target pollutant. Systematic adsorption evaluation and optimization were conducted. The optimal synthesis condition was identified as using 10 mol/L TFA as the modulator. The pH of the solution profoundly influenced adsorption， with maximum OBS removal achieved at pH 3， where the protonated adsorbent surface exerted strong electrostatic attraction towards anionic OBS molecules. Notably， adsorption efficiency remained stable across a range of ionic strengths （Cl&lt;sup&gt;-&lt;/sup&gt; mass concentration 0-100 mg/L）， indicating strong resistance to interference from common salts， a vital advantage for practical app","PeriodicalId":101336,"journal":{"name":"Se pu = Chinese journal of chromatography","volume":"44 10","pages":"1223-1232"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13659880/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149170604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[A comprehensive undergraduate experiment： development of a dispersive solid-phase extraction method based on halogen-bonded organic frameworks and its application to the analysis of brominated flame retardants].","authors":"Dan-Dan Wang, Jia-Qi Hu, Cui Qin, Ming-Yue Wang, Fa-Min Ke, Hong Niu, Xi-Lin Yang, Die Gao","doi":"10.3724/SP.J.1123.2026.04016","DOIUrl":"10.3724/SP.J.1123.2026.04016","url":null,"abstract":"<p><p>To address the evolving demands for innovation and practical competencies in pharmaceutical education， and in alignment with the \"student-centered， outcome-driven\" pedagogical approach， our teaching team has undertaken a comprehensive reform of the Pharmaceutical Analysis curriculum. We designed and implemented an integrative， research-based laboratory experiment for undergraduate students. Centered on the design and application of functional materials， the experiment guides students through the independent synthesis of a halogen-bonded organic framework， designated as XOF-1， followed by systematic structural characterization， performance evaluation， and analytical application. The experiment is grounded in real-world environmental analysis challenges， requiring students to employ the synthesized material as a dispersive solid-phase extraction （DSPE） adsorbent for the selective enrichment of typical brominated flame retardants， including tetrabromobisphenol A （TBBPA）， tetrachlorobisphenol A （TCBPA）， and hexabromobenzene （HBB）， and to achieve the removal of TBBPA from actual water samples. The instructional process fully encompasses the workflow from material preparation and structural characterization to method development and performance assessment， enabling students to experience a complete research pathway from material design to practical application. This approach immerses them in the scientific inquiry cycle of theory-design-experiment-analysis. Through this experiment， students gain solid proficiency in synthesizing and characterizing functional materials and applying them to sample pretreatment. By engaging in experimental design， condition optimization， and data interpretation， they develop critical thinking， problem-solving skills， and capacity for independent inquiry. The exercise fosters deep integration of theoretical knowledge and practical skills， stimulates research interest， strengthens innovative and applied mindsets， and cultivates a sense of professional responsibility in environmental and public health. Ultimately， it achieves a cohesive blend of knowledge acquisition， competency development， and value cultivation， fulfilling the overarching goal of holistic education through experimental learning.</p>","PeriodicalId":101336,"journal":{"name":"Se pu = Chinese journal of chromatography","volume":"44 10","pages":"1251-1261"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13659871/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149171067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Preparation and application of heteroporous covalent organic frameworks as gas chromatography stationary phases].","authors":"Zhi-Quan Li, Zi-Rui Rao, Hai-Long Qian, Xiu-Ping Yan","doi":"10.3724/SP.J.1123.2026.01035","DOIUrl":"10.3724/SP.J.1123.2026.01035","url":null,"abstract":"&lt;p&gt;&lt;p&gt;Chromatographic separation stands as a cornerstone technique in modern analytical chemistry， playing an indispensable role in critical areas such as chemical purification， environmental monitoring， and pharmaceutical analysis. With the increasing complexity of analytical samples， particularly regarding the efficient separation of structurally similar isomers， higher requirements have been imposed on chromatographic stationary phases. Traditional porous materials such as zeolites and silica show limited tunability in pore size distribution and surface chemistry， making it difficult to meet the urgent need for high-resolution and rapid separation of complex mixtures. Therefore， the exploration of novel ordered porous materials with precisely tunable pore structures and functionalities has become a frontier research direction in separation science. Covalent organic frameworks （COFs）， as a category of crystalline porous polymers， possess great application potential in separation science. Their prominent advantages mainly include designable periodic frameworks， easily modified functional groups， and precisely tunable pore sizes. These intrinsic merits render COFs promising candidates for next-generation chromatographic separation media. In this work， a novel strategy is proposed to regulate the pore structure of COFs via rational topological design， aiming to improve their gas chromatographic performance toward challenging isomer separation. This is achieved by constructing heteroporous COFs that integrate distinct pore size distributions within a single， ordered framework. To realize this strategy， a heteroporous COF designated as ET-COF was successfully constructed. It was synthesized via a reversible imine condensation reaction between a &lt;i&gt;D&lt;/i&gt;&lt;sub&gt;2h&lt;/sub&gt;-symmetric tetraamine monomer， 4，4'，4″，4''' -（ethene-1，1，2，2-tetrayl）tetraaniline （ETTA）， and a &lt;i&gt;C&lt;/i&gt;&lt;sub&gt;2&lt;/sub&gt;-symmetric linear dialdehyde linker， terephthalaldehyde （TPA）. This assembly affords a two-dimensional framework with a Kagome topology. The porous structures of material were rigorously characterized. It has been demonstrated through nitrogen adsorption-desorption experiments that ET-COF exhibits a distinct dual-pore structure， including triangular micropores of approximately 1.1 nm and hexagonal mesopores of 2.89 nm， with a specific surface area of 724 m&lt;sup&gt;2&lt;/sup&gt;/g and a pore volume of 1.26 cm&lt;sup&gt;3&lt;/sup&gt;/g. The rich pore structure and high specific surface area confer multiple size-exclusion effects. By virtue of these structural merits， an ET-COF-bonded capillary chromatographic column was further prepared via a facile in-situ growth method， which enables stable and uniform strong chemical bonding of the COF layer to the inner wall of a fused-silica capillary. Finally， the chromatographic performance of this column was systematically evaluated. The heteroporous ET-COF column demonstrated excellent separation performance across a wide range of test analytes. Baseline s","PeriodicalId":101336,"journal":{"name":"Se pu = Chinese journal of chromatography","volume":"44 10","pages":"1203-1211"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13659874/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149171475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Research progress of magnetic microporous organic networks in magnetic solid-phase extraction].","authors":"Jin-Shuang Wang, Cheng-Xiong Yang","doi":"10.3724/SP.J.1123.2025.12010","DOIUrl":"10.3724/SP.J.1123.2025.12010","url":null,"abstract":"&lt;p&gt;&lt;p&gt;Recently， magnetic microporous organic networks （MMONs） have emerged as a novel class of adsorbents in magnetic solid-phase extraction （MSPE）. By integrating the unique properties of microporous organic networks （MONs） and magnetic nanoparticles， MMONs exhibit advantages such as designable structures， facile synthesis， diverse architectures， high specific surface area， and excellent stability， garnering widespread attention in the field of sample pretreatment. The current strategies for preparing MMONs mainly include &lt;i&gt;in-situ&lt;/i&gt; growth， post-synthetic modification （PSM）， and composite preparation. Among these， the &lt;i&gt;in-situ&lt;/i&gt; growth method can be further categorized into direct &lt;i&gt;in-situ&lt;/i&gt; growth， indirect &lt;i&gt;in-situ&lt;/i&gt; growth， and co-doping methods. The direct &lt;i&gt;in-situ&lt;/i&gt; growth method is straightforward to operate， enabling the construction of MMONs with well-defined core-shell structures. It also allows flexible control over the functionality and shell thickness of MMONs by adjusting the type and concentration of monomers， making it the most commonly used preparation method for MMONs. In contrast， the indirect &lt;i&gt;in-situ&lt;/i&gt; growth method involves the introduction of an intermediate bridging layer， which complicates the synthesis process. However， the intermediate coating layer and the MONs shell can work synergistically to enhance the extraction efficiency of MMONs for targets. Although PSM requires additional reaction steps and poses challenges in controlling the modification rate and distribution of functional groups， it increases the variety and quantity of modifying groups and molecules， thereby expanding the application range of MMONs in MSPE. Furthermore， MMON composites can integrate the respective advantages of both MMONs and polymers， further broadening the applicability of MMONs. Therefore， each of the three methods mentioned above has its own advantages and disadvantages. Researchers can select the appropriate synthesis method based on the specific requirements of MSPE to prepare the desired MMONs. This review also provides a detailed discussion on the applications of MMONs in the MSPE of various organic pollutants， including pharmaceuticals， pesticides， endocrine-disrupting chemicals， mycotoxins， food additives， and per- and polyfluoroalkyl substances， and elucidates the extraction mechanisms （e.g. hydrophobic interaction， &lt;i&gt;π&lt;/i&gt;-&lt;i&gt;π&lt;/i&gt; stacking， electrostatic attraction， hydrogen-bonding interaction， ion pair interaction， fluorine-fluorine interaction， and &lt;i&gt;π&lt;/i&gt;-CF interaction） between MMONs and analytes. In response to the current challenges of MMONs， future research should focus on the following areas： （1） Designing and expanding low-cost functional monomers to enrich the variety and quantity of existing functional monomers， providing other effective PSM methods for synthesizing functionalized MMONs， and introducing other functional composites to prepare MMON composites. （2） Developing target-oriented ","PeriodicalId":101336,"journal":{"name":"Se pu = Chinese journal of chromatography","volume":"44 10","pages":"1175-1189"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13659867/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149172002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Fluorine-functionalized zirconium-based metal-organic framework immobilized thin film microextraction array for high-throughput analysis of glyphosate residues].","authors":"Sai-Nan Li, Xiao-Ju Yin, Jia-Wei Liu, Yang Yang, Quan Bai","doi":"10.3724/SP.J.1123.2026.01034","DOIUrl":"10.3724/SP.J.1123.2026.01034","url":null,"abstract":"&lt;p&gt;&lt;p&gt;The development of high-throughput sample pretreatment methods is essential for the rapid screening and accurate analysis of contaminants in food and environmental matrices. In this study， we established a novel high-throughput sample pretreatment approach for glyphosate using a 96-blade thin-film microextraction （TFME） device. The blade surface was coated with a functionalized metal-organic framework （MOF） as the extractive phase. Specifically， a fluorinated zirconium-based MOF （UiO-66-F&lt;sub&gt;4&lt;/sub&gt;） was synthesized &lt;i&gt;via&lt;/i&gt; a hydrothermal method. Various characterization techniques， including scanning electron microscopy （SEM）， transmission electron microscopy （TEM）， Fourier-transform infrared spectroscopy （FT-IR）， X-ray diffraction （XRD）， and nitrogen adsorption-desorption isotherms， were employed to confirm the successful synthesis of UiO-66-F&lt;sub&gt;4&lt;/sub&gt; crystals. The results demonstrated that the synthesized crystals possessed a high specific surface area （559.5 m&lt;sup&gt;2&lt;/sup&gt;/g） and an irregularly stacked porous structure. The prepared UiO-66-F&lt;sub&gt;4&lt;/sub&gt; was subsequently homogenized with a polyacrylonitrile （PAN） solution to form a slurry. This slurry was solidified onto 96 stainless-steel blades using an improved laboratory-developed spraying technique. As a result， an array of 96 UiO-66-F&lt;sub&gt;4&lt;/sub&gt;/PAN extraction coatings was obtained. Each coating in the array was fabricated with uniform dimensions of 2 cm in length， 0.2 cm in width， and approximately 100 μm in thickness. The relative standard deviations （RSDs， &lt;i&gt;n&lt;/i&gt;=8） for the length， width， and thickness of the coatings measured were 0.29%， 0.48%， and 4.64%， respectively. The UiO-66-F&lt;sub&gt;4&lt;/sub&gt; adsorbent offers multiple interaction forces with glyphosate， including metal coordination， hydrogen bonding， and electrostatic interactions. Therefore， the adsorption of glyphosate onto UiO-66-F&lt;sub&gt;4&lt;/sub&gt; occurred rapidly， reaching equilibrium within 5 min. The pseudo-second-order kinetic model provides a superior fit for the adsorption kinetics behavior of glyphosate on the surface of UiO-66-F&lt;sub&gt;4&lt;/sub&gt;， suggesting that the adsorption process is predominantly controlled by chemisorption. Furthermore， the glyphosate adsorption isotherms indicate that its adsorption behavior closely conforms to the Langmuir isotherm model （&lt;i&gt;R&lt;/i&gt;&lt;sup&gt;2&lt;/sup&gt;&gt;0.97）. This finding suggests that glyphosate is adsorbed as a monolayer on the adsorbent surface， giving rise to a maximum adsorption capacity of 239.4 mg/g. The developed TFME method efficiently enriches glyphosate from aqueous solutions at pH 5-7 within 30 min and allows for analyte desorption using an aqueous solution containing 5% （&lt;i&gt;V&lt;/i&gt;/&lt;i&gt;V&lt;/i&gt;） triethylamine. The UiO-66-F&lt;sub&gt;4&lt;/sub&gt;/PAN coatings displayed high repeatability and reproducibility， as evidenced by the RSD values below 2.3% （&lt;i&gt;n&lt;/i&gt;=5）. In addition， the coatings exhibited remarkable robustness， maintaining a recovery of 98.2% after nine consecutive TFME processi","PeriodicalId":101336,"journal":{"name":"Se pu = Chinese journal of chromatography","volume":"44 10","pages":"1233-1242"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13659877/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149171215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Research progress of metal-organic frameworks and their composite materials in solid-phase （micro）extraction techniques].","authors":"Zhen Zhang, Xue-Mei Wang, Xin-Zhong Zhang, Xin-Zhen DU, Xiao-Quan Lu","doi":"10.3724/SP.J.1123.2026.01015","DOIUrl":"10.3724/SP.J.1123.2026.01015","url":null,"abstract":"&lt;p&gt;&lt;p&gt;Sample pretreatment is the core stage of instrumental analysis. It serves to concentrate trace components， eliminate matrix interference， enhance detection sensitivity， and protect analytical instruments. It is a key step in the analysis and detection of complex environmental samples. Modern sample pretreatment techniques， such as solid-phase （micro）extraction， have the advantages of rapidity， automation， and no or minimal solvent usage， significantly improving the analysis efficiency. The core of solid-phase （micro）extraction technology is the adsorbent material， whose performance directly affects the accuracy of the analysis results. Metal-organic frameworks （MOFs） exhibit significant advantages in the field of adsorption and separation due to their exceptionally high specific surface area， tunable pore structures， nanoscale pore environments， and excellent physicochemical stability. Furthermore， building on MOFs as a foundational platform， researchers have developed different strategies for the controlled incorporation of functional components and the precise design of composite architectures. These strategies have enabled the development of MOFs and their composites. These materials allow for targeted enhancement and control over adsorption capacity， mass transfer efficiency， selectivity， stability， and unique interfacial behaviors. As a result， MOFs and their composites are well-suited to address the multifaceted challenges encountered in complex sample preparation. This review summarizes recent advances in the application of MOFs and their composites within solid-phase （micro）extraction techniques. These techniques include solid-phase extraction （SPE）， dispersive solid-phase extraction （DSPE）， magnetic solid-phase extraction （MSPE）， membrane extraction （ME）， pipette-tip solid-phase extraction （PT-SPE）， membrane-protected solid-phase extraction （MP-SPE）， fiber solid-phase microextraction （Fiber-SPME）， and in-tube solid-phase microextraction （IT-SPME）. From the dual perspectives of adsorbent material applications and methodological development， the review highlights the advantages of MOF-based composites with varied compositions and structures across different sample preparation approaches. It further summarizes the methodological strengths and specific limitations associated with each pretreatment technique. With the expanding application scope of the techniques-particularly in environmental， food， and biomedical fields， increasing demands are being placed on the green synthesis， biocompatibility， and safety of MOFs and their composites. This trend is driving the development of MOFs and related composites toward integrated functionality， environmentally friendly preparation， and application-specific adaptability. From current trends， the design philosophy of transforming powdered materials into monolithic structures represents a significant direction in the development of sample preparation technologies. Both directly and indirectly pr","PeriodicalId":101336,"journal":{"name":"Se pu = Chinese journal of chromatography","volume":"44 10","pages":"1129-1149"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13659870/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149171852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}