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学者姓名：张兰
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Abstract ：
藻毒素为有害藻类所产生的次级代谢产物，具有毒性强、种类多和生物蓄积性等特点，对人类健康、水产养殖业以及水生生态系统都会造成严重的威胁，已成为当前全球范围的研究热点。由于藻毒素在样品中的含量很低、样品基质复杂等因素，在仪器分析前进行有效的样品前处理不可或缺。高效的样品前处理技术不但能够减小或去除样品基质对分析的干扰，而且可以实现目标物的富集，增加分析方法的灵敏度与准确性。近年来，固相萃取(SPE)、固相微萃取(SPME)、磁性固相萃取(MSPE)、分散固相萃取(DSPE)、吸管尖端固相萃取(PT-SPE)等样品前处理技术已在藻毒素分离分析领域广受关注。这些前处理技术性能的好坏主要取决于萃取材料的特性。由于藻毒素的理化特性各不相同，在分子尺寸、亲疏水性、电荷等性质上差异较大，合理设计并制备适合藻毒素萃取的材料十分必要。最佳的萃取材料必须实现对藻毒素的可逆吸附，并且最好具有多孔结构和高的比表面积，从而能够提供高的回收率和与藻毒素良好的界面接触。此外，萃取材料还应该在样品溶液、洗脱溶剂、工作pH范围内具有良好的化学稳定性，否则萃取材料可能会溶解或丢失其官能团。本文综述了近十几年来国内外关于藻毒素分析检测研究的主要代表性文献，对新型功能材料在藻毒素萃取过程中的应用进行了梳理归纳，并对其发展前景予以展望。
Keyword ：
共价有机骨架 共价有机骨架 分子印迹聚合物 分子印迹聚合物 碳基材料 碳基材料 综述 综述 藻毒素 藻毒素 金属有机骨架 金属有机骨架
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| GB/T 7714 | 方敏 , 吴雅萍 , 张文敏 et al. 新型功能材料在藻毒素萃取中的应用进展 [J]. | 色谱 , 2024 , 42 (03) : 225-233 . |
| MLA | 方敏 et al. "新型功能材料在藻毒素萃取中的应用进展" . | 色谱 42 . 03 (2024) : 225-233 . |
| APA | 方敏 , 吴雅萍 , 张文敏 , 张兰 , 杨振泉 . 新型功能材料在藻毒素萃取中的应用进展 . | 色谱 , 2024 , 42 (03) , 225-233 . |
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Flower-like particles have attracted much attention due to their efficient surface accessible sites and unique hierarchical porous structure. However, their synthesis is usually challenging and requires complex procedures. Herein, we present a simple method for rapid preparation of flower-like hierarchical porous TiO2 (FHP-TiO2) at room temperature for the first time. This method can accurately control the size of FHP-TiO2 from 150 nm to 400 nm by combining co-assembly and Stober reaction. The formation mechanism and influencing factors of FHP-TiO2 were systematically investigated, and its excellent metal oxide affinity was confirmed by theoretical calculations. Due to its hierarchical porous structure, large surface area and high specificity performance, FHP-TiO2 served as an appealing restricted-access adsorbent for specific and efficient enrichment of molecules with phosphate groups in a complex sample matrix, thereby realizing the quantitative analysis of these important biomolecules by coupling with high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Moreover, compared with other morphologies (rough surface, and hollow dendritic and mesoporous structure) of TiO2 and flower-like SiO2, FHP-TiO2 showed the best affinity binding ability. This research not only presents a novel approach for tunable room-temperature synthesis of FHP-TiO2 with different sizes, but also expands the application of FHP-TiO2 as an appealing sample-enricher for food safety monitoring and early disease diagnosis.
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| GB/T 7714 | Xu, Jinhua , Zhang, Wenmin , Chen, Hui et al. Controllable synthesis of flower-like hierarchical porous TiO2 at room temperature and its affinity application [J]. | JOURNAL OF MATERIALS CHEMISTRY B , 2024 , 12 (8) : 2114-2122 . |
| MLA | Xu, Jinhua et al. "Controllable synthesis of flower-like hierarchical porous TiO2 at room temperature and its affinity application" . | JOURNAL OF MATERIALS CHEMISTRY B 12 . 8 (2024) : 2114-2122 . |
| APA | Xu, Jinhua , Zhang, Wenmin , Chen, Hui , Ding, Qingqing , Xie, Shiye , Zhang, Lan . Controllable synthesis of flower-like hierarchical porous TiO2 at room temperature and its affinity application . | JOURNAL OF MATERIALS CHEMISTRY B , 2024 , 12 (8) , 2114-2122 . |
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本发明公开了一种基以空心锆基卟啉型金属有机骨架材料为涂层的固相微萃取纤维的制备方法及其在1‑萘酚、2‑萘酚萃取中的应用，属于固相微萃取纤维制备领域。该固相微萃取纤维是以聚多巴胺修饰的不锈钢纤维作为基体，以锆盐、苯甲酸、内消旋‑四(4‑羧基苯基)卟吩、水为原料制得，其可用于1‑萘酚和2‑萘酚的检测。本发明制备的空心锆基卟啉型金属有机骨架材料热稳定性好、吸附活性位点丰富、比表面积大，用其制备的固相微萃取纤维重现性好，工作寿命长，所建立的方法能同时测定复杂基质中的1‑萘酚和2‑萘酚。
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| GB/T 7714 | 张兰 , 李青青 , 王娟 et al. 空心锆基卟啉型金属有机骨架固相微萃取纤维的制备及应用 : CN202111400071.7[P]. | 2021-11-24 00:00:00 . |
| MLA | 张兰 et al. "空心锆基卟啉型金属有机骨架固相微萃取纤维的制备及应用" : CN202111400071.7. | 2021-11-24 00:00:00 . |
| APA | 张兰 , 李青青 , 王娟 , 丁青青 , 刘冠城 . 空心锆基卟啉型金属有机骨架固相微萃取纤维的制备及应用 : CN202111400071.7. | 2021-11-24 00:00:00 . |
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本发明属于制备改性Uio‑66材料的技术领域，具体涉及一种以金属有机骨架包覆硅球为填料的固相萃取柱的制备方法，以及该固相萃取柱用于富集海水中的短裸甲藻毒素BTX的应用。SiO2@Uio‑66具有微介孔结构，与BTX之间有静电吸附作用，氢键作用以及良好的空间位阻作用，其孔径尺寸与BTX有良好的契合性，水稳定性以及耐酸碱性良好。使用以SiO2@Uio‑66为填料的固相萃取柱对海水中BTX进行有效富集并通过与高效液相色谱‑串联三重四级杆质谱法(HPLC‑MS/MS)联用，建立一种具有灵敏度高、重现性好、准确度高等优点的海水中BTX的检测方法，在海洋赤潮预警和海洋环境监测方面有良好应用前景。
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| GB/T 7714 | 张兰 , 刘泳君 , 陈晖 et al. 一种SiO2@Uio-66固相萃取柱的制备及其应用 : CN202111218952.7[P]. | 2021-10-20 00:00:00 . |
| MLA | 张兰 et al. "一种SiO2@Uio-66固相萃取柱的制备及其应用" : CN202111218952.7. | 2021-10-20 00:00:00 . |
| APA | 张兰 , 刘泳君 , 陈晖 , 丁青青 , 张文敏 . 一种SiO2@Uio-66固相萃取柱的制备及其应用 : CN202111218952.7. | 2021-10-20 00:00:00 . |
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The efficient enrichment of trace polybrominated diphenyl ethers (PBDEs) in environmental waters remains challenging for environmental monitoring and analysis. Herein, a covalent organic frameworks-poly(ionic liquid) s hybrid material (COF-gamma-PIL) is synthesized by threading poly(1-vinyl-3-methylimidazolium bis ((tri-fluoromethyl) sulfonyl) imide) into a vinyl-decorated COF via photopolymerization. The resultant hybrid retains the crystallinity and porosity of COF, thus offering adequate adsorption sites for the targets. PIL threaded in COF facilitates the synergistic capture of target molecules within the hybrid through multiple interactions, including Van der Waals forces, weak hydrogen bonding, and hydrophobic interactions. As a proof of concept, COF-gamma-PIL was utilized as the fiber coating for SPME of PBDEs in waters prior to their analysis via GC-MS. Excellent analytical results were achieved, with wide linearity (0.01-100 ng L-1), low limits of detection (0.0021-0.014 of ng L-1), and satisfactory recoveries (78.6%-103.6%). The outstanding extraction performance can be ascribed to the extraordinary flexibility of the active fraction on linear polymers threaded in COF, which facilitates collaborative capture for target molecules, as revealed by density functional theory (DFT) calculations. This work uncovers the microscopic mechanism for PBDEs capturing and provides new insights into the design of functionalized COF hybrids.
Keyword ：
Covalent organic frameworks Covalent organic frameworks Hybrid materials Hybrid materials Polybrominated diphenyl ethers Polybrominated diphenyl ethers Poly(ionic liquid)s Poly(ionic liquid)s Solid -phase microextraction Solid -phase microextraction
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| GB/T 7714 | Su, Lishen , Zheng, Xuan , Tang, Jingpu et al. Poly(ionic liquid)s threaded into covalent organic framework for synergistic capture of polybrominated diphenyl ethers [J]. | JOURNAL OF HAZARDOUS MATERIALS , 2023 , 461 . |
| MLA | Su, Lishen et al. "Poly(ionic liquid)s threaded into covalent organic framework for synergistic capture of polybrominated diphenyl ethers" . | JOURNAL OF HAZARDOUS MATERIALS 461 (2023) . |
| APA | Su, Lishen , Zheng, Xuan , Tang, Jingpu , Wang, Qingxiang , Zhang, Lan , Wu, Xiaoping . Poly(ionic liquid)s threaded into covalent organic framework for synergistic capture of polybrominated diphenyl ethers . | JOURNAL OF HAZARDOUS MATERIALS , 2023 , 461 . |
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Algae toxins pose a severe threat to human health all over the world. In this study, magnetic metal/nitrogen-doped carbon nanotubes (M-NCNTs) were facilely synthesized based on one-step car-bonization and applied for magnetic solid-phase extraction of okadaic acid (OA) from seawater followed by high performance liquid chromatographic tandem mass spectrometry (HPLC-MS/MS) analyses. Differ-ences in the physicochemical properties of the three prepared materials (Fe/Co/Ni-NCNTs) were investi-gated to confirm the best extraction material. Among them, Ni-NCNTs demonstrated a faster extraction rate (10 min) and higher adsorption capacity (223.5 mg g -1), mainly due to the higher specific surface area, suitable pore structure and more abundant pyridine nitrogen ring. Under the optimal conditions, the calibration curve was linear over the range (1.0-80 0.0 pg mL -1) with good determination coefficients (R) of 0.9992. The limit of detection (LOD) obtained in multiple replicates was 0.4 pg mL -1. Three seawater samples were measured by the developed method, 12.3 pg mL -1 of OA was detected with a satisfying recovery (88.6%-106.7%) and acceptable repeatability (RSD <= 4.8%, n = 6). The results demonstrate that M-NCNTs materials are a promising candidate for magnetic solid-phase extraction. Benefiting from its high extraction and interference resistance, the established analytical method is expected to be extended to detect other marine environmental pollutions.(c) 2022 Elsevier B.V. All rights reserved.
Keyword ：
HPLC-MS HPLC-MS Magnetic solid-phase extraction Magnetic solid-phase extraction Metal Metal MS MS nitrogen-doped carbon nanotubes nitrogen-doped carbon nanotubes Okadaic acid Okadaic acid Seawater Seawater
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| GB/T 7714 | Chen, Hui , Zhang, Wenmin , Liu, Guancheng et al. Highly sensitive detection of okadaic acid in seawater by magnetic solid-phase extraction based on low-cost metal/nitrogen-doped carbon nanotubes [J]. | JOURNAL OF CHROMATOGRAPHY A , 2023 , 1689 . |
| MLA | Chen, Hui et al. "Highly sensitive detection of okadaic acid in seawater by magnetic solid-phase extraction based on low-cost metal/nitrogen-doped carbon nanotubes" . | JOURNAL OF CHROMATOGRAPHY A 1689 (2023) . |
| APA | Chen, Hui , Zhang, Wenmin , Liu, Guancheng , Ding, Qingqing , Xu, Jinhua , Fang, Min et al. Highly sensitive detection of okadaic acid in seawater by magnetic solid-phase extraction based on low-cost metal/nitrogen-doped carbon nanotubes . | JOURNAL OF CHROMATOGRAPHY A , 2023 , 1689 . |
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Pipette tip solid-phase extraction (PT-SPE) as a miniaturized solid-phase extraction technique have a wide range of applications in the field of sample pretreatment. In this study, ionic covalent organic frameworks@cotton (iCOF@cotton) were facilely synthesized by mechanochemical grinding method only in half an hour, and used as the adsorbents of PT-SPE. The synthesized iCOF@cotton not only had high specific surface area, suitable pore structure and cationic charge groups of iCOF that can extract polar targets quickly, but also reduced the problem of high back pressure of PT-SPE by the addition of cotton, thus accelerating extraction time. Combined with high performance liquid chromatographic tandem mass spectrometry (HPLC-MS/MS), an efficient and sensitive method was established for detection of domoic acid (DA, a toxin produced by algae). Under the optimal con-ditions, the proposed analysis method displayed excellent analytical performance, including broad range of linearity (10-1000 pg mL-1), low limit of detection (LOD, 5 pg mL-1), high correlation coefficient (0.9993), satisfactory precision (RSDs <= 6.4 %). In addition, the developed method was applied to the detection of DA in marine samples, and detected trace DA (18.6 pg mL-1) with satisfactory recovery (85.7%-107.2 %). The above results indicated that the prepared iCOF@cotton have great potential as the adsorbents for PT-SPE.
Keyword ：
Cotton Cotton Covalent organic frameworks Covalent organic frameworks Domoic acid Domoic acid Mechanochemical synthesis Mechanochemical synthesis Pipette tip solid-phase extraction Pipette tip solid-phase extraction
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| GB/T 7714 | Wang, Zhiyong , Xie, Shiye , Zhang, Wenmin et al. Mechanochemical synthesis ionic covalent organic frameworks/cotton composites for pipette tip solid-phase extraction of domoic acid in seafood [J]. | TALANTA , 2023 , 269 . |
| MLA | Wang, Zhiyong et al. "Mechanochemical synthesis ionic covalent organic frameworks/cotton composites for pipette tip solid-phase extraction of domoic acid in seafood" . | TALANTA 269 (2023) . |
| APA | Wang, Zhiyong , Xie, Shiye , Zhang, Wenmin , Chen, Hui , Ding, Qingqing , Xu, Jinhua et al. Mechanochemical synthesis ionic covalent organic frameworks/cotton composites for pipette tip solid-phase extraction of domoic acid in seafood . | TALANTA , 2023 , 269 . |
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The morphology of nanomaterials is one of essential factors for their unique properties. Herein, a hollow covalent organic framework with a flower-like structure (HFH-COF) was synthesized at room temperature. The synthesized HFH-COF has a very large specific surface area, mesoporous structure, excellent chemical stability, and good crystallinity. The special morphology endowed HFH-COF with high specific surface area utilization and rapid mass transfer rate, resulting in faster equilibration time and better extraction performance than spherical COF (S-COF). Subsequently, combined with high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS), an efficient and sensitive method was established for microcystins (MCs) detection. The developed method has low detection limits (0.6-0.8 pg mL(-1)), wide linear ranges (1.5-1000.0 pg mL(-1), R >= 0.9993), and acceptable reproducibility (RSD <= 7.6%, n = 6). Real biological samples were analyzed by the developed method, and trace levels of MC-YR, MC-RR and MC-LR were detected. The results indicate that the synthesized HFH-COF is an ideal sorbent for efficient extraction of MCs from complex biological samples.
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| GB/T 7714 | Yu, Zhenli , Chen, Hui , Zhang, Wenming et al. Room temperature synthesis of flower-like hollow covalent organic framework for efficient enrichment of microcystins [J]. | RSC ADVANCES , 2023 , 13 (7) : 4255-4262 . |
| MLA | Yu, Zhenli et al. "Room temperature synthesis of flower-like hollow covalent organic framework for efficient enrichment of microcystins" . | RSC ADVANCES 13 . 7 (2023) : 4255-4262 . |
| APA | Yu, Zhenli , Chen, Hui , Zhang, Wenming , Ding, Qingqing , Yu, Qidong , Fang, Min et al. Room temperature synthesis of flower-like hollow covalent organic framework for efficient enrichment of microcystins . | RSC ADVANCES , 2023 , 13 (7) , 4255-4262 . |
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beta-Lactamase (Bla) produced by bacteria to resist beta-lactam antibiotics is a serious public health threat. Developing efficient diagnostic protocols for drug-resistant bacteria is of great significance. In this work, based on gas molecules in bacteria, a novel research strategy was proposed to develop a gas molecule-based probe by grafting 2-methyl-3-mercaptofuran (MF) onto cephalosporin intermediates via a nucleophilic substitution reaction. The probe can release the corresponding MF by reacting with Bla. The released MF, as a marker of drug-resistant bacteria, was analyzed by headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry. The Bla concentration as low as 0.2 nM can be easily observed, providing an efficient method for detecting enzyme activity and screening drug-resistant strains in vivo. Importantly, the method is universal, and probes with different properties can be prepared by changing different substrates to further identify different types of bacteria, thereby broadening the research methods and ideas for monitoring physiological processes.
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| GB/T 7714 | Ding, Qingqing , Zhang, Wenmin , Guo, Yuheng et al. ?-Lactamase Sensitive Probe for Rapid Detection of Antibiotic- Resistant Bacteria with Gas Chromatography-Tandem Mass Spectrometry [J]. | ANALYTICAL CHEMISTRY , 2023 , 95 (14) : 6098-6106 . |
| MLA | Ding, Qingqing et al. "?-Lactamase Sensitive Probe for Rapid Detection of Antibiotic- Resistant Bacteria with Gas Chromatography-Tandem Mass Spectrometry" . | ANALYTICAL CHEMISTRY 95 . 14 (2023) : 6098-6106 . |
| APA | Ding, Qingqing , Zhang, Wenmin , Guo, Yuheng , Wang, Juan , Chen, Hui , Zhang, Lan . ?-Lactamase Sensitive Probe for Rapid Detection of Antibiotic- Resistant Bacteria with Gas Chromatography-Tandem Mass Spectrometry . | ANALYTICAL CHEMISTRY , 2023 , 95 (14) , 6098-6106 . |
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Conductive covalent organic frameworks (COFs) have received considerable attention and are critical in various applications such as electro-enhanced solid-phase microextraction (EE-SPME). In this work, a novel piperazine-linked copper-doped phthalocyanine metal covalent organic framework (CuPc-MCOF) was synthesized with good stability and high electrical conductivity. The synthesized CuPc-MCOF was then used as an EE-SPME coating material for extraction of five trace chlorophenols (CPs), includ-ing 2,4-dichlorophenol (2,4-DCP), 2,6-dichlorophenol (2,6-DCP), 2,4,6-trichlorophenol (2,4,6-TCP), 2,4,5-trichlorophenol (2,4,5-TCP) and 2,4,5,6-tetrachlorophenol (2,4,5,6-TCP), exhibiting excellent extraction per-formance because of various synergistic forces between CuPc-MCOF fibers and CPs. By combining EE-SPME with gas chromatography-tandem mass spectrometry (GC-MS/MS), a sensitive method for CPs de-tection was established with a low limit of detection (0.8-5 ng L -1) and good reproducibility (RSD <= 8.4%, n = 3). This method was then successfully applied to the analysis of trace CPs in real samples of sea-water and seafood. Results showed that the developed CuPc-MCOF coating material possessed superior extraction performance and potential application in extraction of trace polar pollutants from complex samples.(c) 2023 Elsevier B.V. All rights reserved.
Keyword ：
Chlorophenols (CPs) Chlorophenols (CPs) Electro-enhanced solid-phase Electro-enhanced solid-phase GC-MS GC-MS Metal covalent organic framework (MCOF) Metal covalent organic framework (MCOF) microextraction (EE-SPME) microextraction (EE-SPME) MS MS
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| GB/T 7714 | Wang, Jingyi , Zhang, Wenmin , Chen, Hui et al. Piperazine-linked metal covalent organic framework-coated fibers for efficient electro-enhanced solid-phase microextraction of chlorophenols [J]. | JOURNAL OF CHROMATOGRAPHY A , 2023 , 1692 . |
| MLA | Wang, Jingyi et al. "Piperazine-linked metal covalent organic framework-coated fibers for efficient electro-enhanced solid-phase microextraction of chlorophenols" . | JOURNAL OF CHROMATOGRAPHY A 1692 (2023) . |
| APA | Wang, Jingyi , Zhang, Wenmin , Chen, Hui , Ding, Qingqing , Xu, Jinhua , Yu, Qidong et al. Piperazine-linked metal covalent organic framework-coated fibers for efficient electro-enhanced solid-phase microextraction of chlorophenols . | JOURNAL OF CHROMATOGRAPHY A , 2023 , 1692 . |
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