Microchimica Acta最新文献_第10页

Lanthanide and functionalization-free dual-state emitting zinc-based MOFs followed by dual-state detection: ratiometric and color-tonality visual detection of tetracycline in solution and on paper in food and environmental samples 镧系和无功能化双态发射锌基mof，然后进行双态检测：食品和环境样品中溶液和纸上四环素的比例和色调视觉检测

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-12-21 DOI: 10.1007/s00604-024-06896-y

Sameera Sh. Mohammed Ameen, Khalid M. Omer

{"title":"Lanthanide and functionalization-free dual-state emitting zinc-based MOFs followed by dual-state detection: ratiometric and color-tonality visual detection of tetracycline in solution and on paper in food and environmental samples","authors":"Sameera Sh. Mohammed Ameen, Khalid M. Omer","doi":"10.1007/s00604-024-06896-y","DOIUrl":"10.1007/s00604-024-06896-y","url":null,"abstract":"<div><p>An efficient dual-state blue-emitting zinc-based metal–organic frameworks (MOFs), designated as UoZ-8 has been developed. Coordination-induced emission causes the UoZ-8 to give the blue emission in both solid and dispersed form in liquid. Upon the addition of tetracycline (TC), a noticeable shift from blue emission to greenish-yellow emission occurred, with a marked increase in intensity, which was attributed to the inner filter effect accompanied by aggregation-induced emission (IFE-AIE). Consequently, ratiometric-based fluorometry (in solution) and color tonality visual detection platform (on paper) were developed, exploiting the dual-state property of UoZ-8 alone and UoZ-8:TC. The detection limit using the ratiometric-based fluorescence method was 3.8 nM, while on paper it was 3.5 µM. Paper-based visual mode was used for the detection of TC in tap and river water samples showing satisfactory accuracy and precision.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"192 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent progress, challenges, and future perspectives of electrochemical biosensing of aflatoxins 黄曲霉毒素电化学生物传感技术的最新进展、挑战和未来展望

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-12-18 DOI: 10.1007/s00604-024-06857-5

Doddanagowada S, Venkata Narayana Palakollu, S. V. Prabhakar Vattikuti, Jaesool Shim, Naresh Mameda

{"title":"Recent progress, challenges, and future perspectives of electrochemical biosensing of aflatoxins","authors":"Doddanagowada S, Venkata Narayana Palakollu, S. V. Prabhakar Vattikuti, Jaesool Shim, Naresh Mameda","doi":"10.1007/s00604-024-06857-5","DOIUrl":"10.1007/s00604-024-06857-5","url":null,"abstract":"<div><p>Aflatoxins (AFs), produced by fungi, are highly hazardous and classified as mycotoxins. Controlling their levels is of significant concern. This group consists of 20 fungal metabolites, all structurally derived from difuranocoumarin. Exposure to AFs through food can cause critical health issues, such as cancers, deformities, and mutations, posing a significant global public health issue. The inherent dangers of AF exposure necessitate swift and reliable detection techniques to identify its presence in food products. The rise of nanotechnology has opened doors to innovative electrochemical biosensors, offering a promising solution to this pressing issue. This review delves into nanomaterial-based aptasensors, immunosensors, and molecularly imprinted polymers, the predominant electrochemical biosensors developed for AF detection. This paper offers a broad summary of recent advancements in biosensor technology in electrochemical sensing of AFs, alongside challenges to overcome limitations, and future perspectives.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"192 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical biosensor for detection of ampicillin in milk based on Au5Pt and DNA cycle dual-signal amplification strategy 基于 Au5Pt 和 DNA 循环双信号放大策略的检测牛奶中氨苄西林的电化学生物传感器

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-12-16 DOI: 10.1007/s00604-024-06817-z

Li Mingyao, Li Ruiyi, Li Zaijun

{"title":"Electrochemical biosensor for detection of ampicillin in milk based on Au5Pt and DNA cycle dual-signal amplification strategy","authors":"Li Mingyao, Li Ruiyi, Li Zaijun","doi":"10.1007/s00604-024-06817-z","DOIUrl":"10.1007/s00604-024-06817-z","url":null,"abstract":"<div><p>A biosensor is reported for electrochemical detection of ampicillin based on Au<sub>5</sub>Pt and DNA cycle dual-signal amplification strategy. Firstly, Au<sub>5</sub>Pt is prepared by reduction of chloroauric acid and chloroplatinic acid with serine-functionalized graphene quantum dot (SGQD). The resulting Au<sub>5</sub>Pt shows an excellent catalytic activity because of the synergy of Au and Pt. Then, Au<sub>5</sub>Pt is covalently combined with hairpin DNA and thionine molecule to form a redox probe. The probe was used for construction of the ampicillin biosensor coupling with DNA cycling. In the presence of ampicillin, the DNA cycle was triggered and leads to many redox probes being carried to the biosensor. This produces a significant signal amplification by oxidation and reduction of thionine molecules in these probes. The combination of Au<sub>5</sub>Pt catalysis with DNA cycle achieve ultrahigh sensitivity, selectivity, and stability for the electrochemical detection of ampicillin. Differential pulse voltammetry current linearly increases with the increase of ampicillin concentration in the range 1 × 10<sup>−18</sup>–1 × 10<sup>−12</sup> M with a detection limit of 3.2 × 10<sup>−19</sup> M (<i>S</i>/<i>N</i> = 3). The proposed analytical method has been satisfactorily used for electrochemical detection of ampicillin in milk.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"192 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-chromatic and multi-component lateral flow immunoassay for simultaneous detection of CP4 EPSPS, Bt-Cry1Ab, Bt-Cry1Ac, and PAT/bar proteins in genetically modified crops 同时检测转基因作物中CP4 EPSPS、Bt-Cry1Ab、Bt-Cry1Ac和PAT/bar蛋白的多色多组分横向流动免疫分析法

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-12-16 DOI: 10.1007/s00604-024-06853-9

Yao Yang, Zini Zhang, Zhi Wang, Ruxin Pan, Huimin Wu, Shanshan Zhai, Gang Wu, Wei Fu, Hongfei Gao

{"title":"Multi-chromatic and multi-component lateral flow immunoassay for simultaneous detection of CP4 EPSPS, Bt-Cry1Ab, Bt-Cry1Ac, and PAT/bar proteins in genetically modified crops","authors":"Yao Yang, Zini Zhang, Zhi Wang, Ruxin Pan, Huimin Wu, Shanshan Zhai, Gang Wu, Wei Fu, Hongfei Gao","doi":"10.1007/s00604-024-06853-9","DOIUrl":"10.1007/s00604-024-06853-9","url":null,"abstract":"<div><p>A multi-chromatic and multi-component lateral flow immunoassay (MCMC-LFIA) was developed for simultaneous detection of CP4 EPSPS, Bt-Cry1Ab, Bt-Cry1Ac, and PAT/<i>bar</i> proteins in genetically modified (GM) crops. Captured antibodies specific to these exogenous proteins were separately immobilized on a nitrocellulose membrane as test zones. Multi-colored microspheres, used as visible multi-probes, were conjugated with corresponding antibodies and sprayed on the conjugate pad. The assay results can be visually interpreted within 10 min by observing the appearance of colored bands. The MCMC-LFIA demonstrated high sensitivity, with detection of limits of 7.8 ng/mL for CP4 EPSPS and 2.5 ng/mL for Bt-Cry1Ab, Bt-Cry1Ac, and PAT/<i>bar</i> proteins, significantly improving the performance of previously reported LFIAs. The MCMC-LFIA exhibited excellent specificity and was validated for practical use in field-based applications. The proposed MCMC-LFIA offers a rapid, sensitive, and user-friendly tool for the on-site large-scale screening of GM materials.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"192 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction of an electrochemical sensor based on magnetic molecularly imprinted polymer-zeolite imidazole framework-8 for detection of 3,4-benzopyrene 磁性分子印迹聚合物-沸石咪唑骨架-8电化学传感器的构建及其对3,4-苯并芘的检测

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-12-13 DOI: 10.1007/s00604-024-06858-4

Binbin Zhou, Xinyi Li, Hao Xie, Xingxin Sheng, Lijun Huang, Yongbo Zhu, Meng Liang, Ming Zhong

{"title":"Construction of an electrochemical sensor based on magnetic molecularly imprinted polymer-zeolite imidazole framework-8 for detection of 3,4-benzopyrene","authors":"Binbin Zhou, Xinyi Li, Hao Xie, Xingxin Sheng, Lijun Huang, Yongbo Zhu, Meng Liang, Ming Zhong","doi":"10.1007/s00604-024-06858-4","DOIUrl":"10.1007/s00604-024-06858-4","url":null,"abstract":"<div><p> A novel molecular-imprinted electrochemical sensor for 3,4-benzopyrene (3, 4-BaP) in food samples, with high sensitivity and selective detection, is introduced. Firstly, graphene oxide was modified onto a glassy carbon electrode (GCE) by electroreduction deposition to form an RGO/GCE sensing platform, thereby enhancing the sensitivity and stability of the sensor. Then, magnetic molecularly imprinted polymer-zeolite imidazole framework-8 (MMIP-ZIF-8) was synthesized in one step using the crystal growth method and modified onto RGO/GCE, endowing the sensor with good adsorption capacity and selectivity. The performance of the sensor for 3, 4-BaP was studied using differential pulse voltammetry (DPV), and the detection conditions of the constructed sensor were optimized. The results showed that under the optimal conditions, the constructed sensor exhibited a wide linear range (0.5 ~ 1000 nmol L<sup>−1</sup>), a low limit of detection (0.16 nmol L<sup>−1</sup>), and good selectivity and stability for the detection of 3, 4-BaP. It also showed a good recovery (99.74 ~ 102.58%) for the detection of 3, 4-BaP in actual corn meal samples. The MMIP-ZIF-8/RGO/GCE sensor developed has potential application prospects in the precise detection of 3, 4-BaP in food.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"192 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142810921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mn, N co-doped CDs as a fluorescent nanosensing platform for the detection of tannic acid and hafnium ion and in vitro fluorescence imaging of U2OS osteosarcoma cells 以Mn、N共掺杂CDs作为荧光纳米传感平台，检测单宁酸和铪离子，并对U2OS骨肉瘤细胞进行体外荧光成像

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-12-11 DOI: 10.1007/s00604-024-06848-6

Xue-Lin Zhao, Sen-Zhen Wang, Lihua Zhang, Zhen Wang, Jin-Yan Huang, Song Liao, Min Lu, Zhi Yang, Xing-Jun Zhao, Zi-Yi Zhao, Zi-Xuan Guo, Lu-Nan Zhang, Pei-De Zhu, Meng Xu

{"title":"Mn, N co-doped CDs as a fluorescent nanosensing platform for the detection of tannic acid and hafnium ion and in vitro fluorescence imaging of U2OS osteosarcoma cells","authors":"Xue-Lin Zhao, Sen-Zhen Wang, Lihua Zhang, Zhen Wang, Jin-Yan Huang, Song Liao, Min Lu, Zhi Yang, Xing-Jun Zhao, Zi-Yi Zhao, Zi-Xuan Guo, Lu-Nan Zhang, Pei-De Zhu, Meng Xu","doi":"10.1007/s00604-024-06848-6","DOIUrl":"10.1007/s00604-024-06848-6","url":null,"abstract":"<div><p>Multi-wavelength emission fluorescent manganese-nitrogen co-doped carbon dots (Mn, N co-doped CDs) were synthesized by solvothermal method using <i>β</i>-cyclodextrin, O-phenylenediamine, and manganese chloride as raw materials. The prepared Mn, N co-doped CDs were used as fluorescent nanosensing platforms for the detection of metal ions and biomolecules and were found to be capable of fluorescence detection of tannic acid (TA) and hafnium (Hf) ion at 320, 380, and 480 nm excitation wavelengths with multi-response linear ranges of 0.7 ~ 1.2 µM and 6.35 ~ 13 µM and detection limits of 0.45 µM and 6.3 µM, respectively. The wide linear ranges and low detection limits may be due to the fluorescence resonance energy transfer effect between the platform and TA and Hf ions. In addition, it was found that Mn, N co-doped CDs had good photostability, biocompatibility, and low cytotoxicity, which could be used for in vitro fluorescence imaging of exogenous TA and Hf ion imaging in U2OS osteosarcoma cells. Thus, the probe has a promising application in biomedical fields as a new multi-responsive fluorescence nanosensing platform member.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"192 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00604-024-06848-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

MnO2 nanoparticles enhance the activity of the Zr-MOF matrix electrochemical sensor for efficiently identifying ultra-trace tetracycline residues in food 二氧化锰纳米颗粒增强了Zr-MOF基质电化学传感器的活性，可有效识别食品中超痕量四环素残留

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-12-08 DOI: 10.1007/s00604-024-06854-8

Siyu Tian, Jiahui Wang, Yu Jie, Zhu Ding, Xiao Wang, Jijiang Wang, Xiangyang Hou

{"title":"MnO2 nanoparticles enhance the activity of the Zr-MOF matrix electrochemical sensor for efficiently identifying ultra-trace tetracycline residues in food","authors":"Siyu Tian, Jiahui Wang, Yu Jie, Zhu Ding, Xiao Wang, Jijiang Wang, Xiangyang Hou","doi":"10.1007/s00604-024-06854-8","DOIUrl":"10.1007/s00604-024-06854-8","url":null,"abstract":"<div><p> A novel nanobiosensor was constructed by in situ locating nanometer MnO<sub>2</sub> particles with controllable size and morphology in a Zr-MOF substrate to serve as an electrochemical probe. The synergistic effect of the two components, Zr-MOFs with high specific surface area and compatibility as a carrier for MnO<sub>2</sub>, resulted in improved electrochemical activity and excellent electrochemical identification performance for the MnO<sub>2</sub>@Zr-MOF/GCE biosensor. Under optimized experimental conditions and using CV and DPV technology, the biosensor showed a wide linear detection range (2–200 μM), a low detection limit (2.577 × 10<sup>−8</sup> M), a recovery range (106.26–115.01%), and maximum relative standard deviation (5.155) for tetracycline (TC) identification. The recognition mechanism of the sensor was investigated adopting Laviron adsorption theory. The applicability of the sensor was verified through practical measurements. Overall, the MnO<sub>2</sub> @Zr-MOF/GCE sensor possesses the advantages of fast analysis speed, high sensitivity, high selectivity, and simple operation, making it suitable for detecting trace amounts of TC in food.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"192 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A facile optical fiber-embedded microfluidic biochip for rapid and sensitive detection of microRNA-let-7a in serum 一种快速灵敏检测血清中微rna -let-7a的光纤微流控生物芯片

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-12-06 DOI: 10.1007/s00604-024-06865-5

Yongkai Lu, Jiaxin Xu, Siyan Liu, Baochun Tian, Feng Long

{"title":"A facile optical fiber-embedded microfluidic biochip for rapid and sensitive detection of microRNA-let-7a in serum","authors":"Yongkai Lu, Jiaxin Xu, Siyan Liu, Baochun Tian, Feng Long","doi":"10.1007/s00604-024-06865-5","DOIUrl":"10.1007/s00604-024-06865-5","url":null,"abstract":"<div><p> A novel hybridization chain reaction (HCR) powered optical fiber-embedded microfluidic biochip (HCR-FMB) has been constructed for ultrafast and sensitive detection of lethal-7a (let-7a) in serum. By integrating HCR, fluorescence energy resonant transfer, and evanescent wave fluorescence principle, the HCR-FMB enables detecting let-7a with satisfactory limit of detection of 100.0 pM within 6 min at room temperature, and demonstrates excellent specificity. The HCR-FMB can directly detect let-7a in serum with high sensitivity and without any pre-treatment, and good recoveries were observed for let-7a in serum samples, demonstrating their potential application to the analysis of serum samples. The HCR-FMB exhibits several advantages, including rapidity, enzyme-free, miniaturization, ease-of-operation, field-deployment applicability, minimal-equipment, and cost-effectiveness. The HCR-FMB can be considered a revolutionary detection device that rapidly adapts and deploys in various settings, especially in low medical resource regions.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"192 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of a colorimetric/fluorescence dual-mode immunoassay for aflatoxin B1 based on streptavidin-induced gold nanoparticle aggregation 基于链霉亲和素诱导金纳米颗粒聚集的黄曲霉毒素B1比色/荧光双模免疫测定方法的建立

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-12-06 DOI: 10.1007/s00604-024-06843-x

Yaqian Cheng, Chenxi Wang, Xueyu Chang, Xuexia Jia, Zesheng Liu, Baolin Liu, Zhixian Gao, Huanying Zhou

{"title":"Development of a colorimetric/fluorescence dual-mode immunoassay for aflatoxin B1 based on streptavidin-induced gold nanoparticle aggregation","authors":"Yaqian Cheng, Chenxi Wang, Xueyu Chang, Xuexia Jia, Zesheng Liu, Baolin Liu, Zhixian Gao, Huanying Zhou","doi":"10.1007/s00604-024-06843-x","DOIUrl":"10.1007/s00604-024-06843-x","url":null,"abstract":"<div><p>A dual-mode immunoassay method was developed for colorimetric and fluorescence detection of aflatoxin B1 (AFB1) based on streptavidin-induced gold nanoparticle aggregation (AuNP@SA). AuNP-modified streptavidin–biotin labeling AFB1 complete antigen aggregations (AuNP@SA@Bio-BSA-AFB1) were synthesized as the competitive binding and dual-mode probe. AuNP@SA@Bio-BSA-AFB1 aggregations possessed high colorimetric and fluorescence quenching intensities. AFB1 antibodies modified immunomagnetic microspheres were used as the capture probe. The competitive binding between AFB1 and AuNP@SA@Bio-BSA-AFB1 leads to changes in color and fluorescence intensity. The detection limit of the colorimetric method is 6.95 ng·mL<sup>−1</sup>, while that of the fluorescence method is 0.07 ng·mL<sup>−1</sup>. The practicality of the proposed strategy was demonstrated by determining AFB1 in spiked peanut samples.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"192 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142789208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Facile and rapid preparation of fluorinated imprinted adsorbent for magnetic solid phase extraction of liquid–crystal monomers 磁性固相萃取液晶单体用氟印迹吸附剂的简易快速制备

IF 5.3 2区化学

Microchimica Acta Pub Date : 2024-12-06 DOI: 10.1007/s00604-024-06851-x

YueYue Zhang, Dingliang Tang, Yuanfei Wu, Xiaojia Huang

{"title":"Facile and rapid preparation of fluorinated imprinted adsorbent for magnetic solid phase extraction of liquid–crystal monomers","authors":"YueYue Zhang, Dingliang Tang, Yuanfei Wu, Xiaojia Huang","doi":"10.1007/s00604-024-06851-x","DOIUrl":"10.1007/s00604-024-06851-x","url":null,"abstract":"<div><p> A new fluorinated imprinted adsorbent (MIA) for magnetic solid phase extraction (MSPE) of liquid crystal monomer (LCM) pollutants was one-pot prepared within 3.5 h using 4-[difluoro(3,4,5-trifluorophenoxy)methyl]-3,5-difluoro-4′-ethyl-biphenyl (DFBP) as template and 1H,1H,2H,2H-heptadecafluorodecyl acrylate/vinylanthracene as dual monomers. The structure, morphology, and magnetic properties of MIA fabricated were investigated by various characterization techniques. Under the optimal conditions the prepared MIA presented satisfactory specific recognition performance. The recognition factor and adsorption capacity towards DFBP were 2.7 and 15.9 mg/g, respectively. The specific recognition behaviors of MIA/MSPE towards DFBP were surveyed by means of adsorption kinetics and adsorption isotherms. Combining MSPE with HPLC coupled to a diode array detector (DAD), a sensitive, reliable and anti-interference method for the monitoring of LCMs residuals in various environmental water and soil samples was established. The achieved enrichment factors were 132–248 and 96–204 in water and soil samples, respectively. The corresponding limits of detection were 0.0017–0.0051 μg/L and 0.087–0.28 μg/kg, respectively. Moreover, confirmatory experiments were adopted to inspect the accuracy of the established MIA/MSPE-HPLC/DAD approach. To the best of our knowledge, this is the first time that an imprinted material has been used for specific isolation and capture of LCMs which have been classified as emerging organic pollutants.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"192 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142789209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0