IF 5.6 1区化学

Talanta Pub Date : 2025-01-01 Epub Date: 2024-10-16 DOI: 10.1016/j.talanta.2024.127015

Pingan Lu, Liu Yang, Weiling Chen, Kaiguo Li, Xuxia Chen, Song Qu

引用次数: 0

1-(o-Tolyl)thiourea-based deep eutectic solvent as a stationary phase in flow injection analysis system for mercury and copper determination in edible oils. 以 1-（邻甲苯基）硫脲为基础的深共晶溶剂作为固定相，在流动注射分析系统中测定食用油中的汞和铜。

IF 5.6 1区化学

Talanta Pub Date : 2025-01-01 Epub Date: 2024-10-19 DOI: 10.1016/j.talanta.2024.127079

Andrey Shishov, Ulyana Markova, Valeriia Mulloyarova, Peter Tolstoy, Natalya Shkaeva, Dmitry Kosyakov, Nipu Kumar Das, Tamal Banerjee

{"title":"1-(o-Tolyl)thiourea-based deep eutectic solvent as a stationary phase in flow injection analysis system for mercury and copper determination in edible oils.","authors":"Andrey Shishov, Ulyana Markova, Valeriia Mulloyarova, Peter Tolstoy, Natalya Shkaeva, Dmitry Kosyakov, Nipu Kumar Das, Tamal Banerjee","doi":"10.1016/j.talanta.2024.127079","DOIUrl":"10.1016/j.talanta.2024.127079","url":null,"abstract":"In this work, a novel deep eutectic solvent (DES) composed of thymol and 1-(o Tolyl)thiourea 9/1 (mol) is presented for the first time. This DES has not been described in the literature. This DES was first used as a stationary phase in an extraction column integrated into a flow injection analysis system for the simultaneous determination of mercury and copper in edible oils. The automated approach involves passing an aqueous sample solution obtained after microwave mineralization through a microcolumn of DES retained on polytetrafluoroethylene. This leading to the extraction and concentration of the analytes. The metals are then eluted with an aqueous thiourea solution for subsequent analysis by inductively coupled plasma-optical emission spectrometry. The limits of detection (LODs) for mercury and copper were 3 μg L⁻1 and 2.5 μg L⁻1, respectively. The approach demonstrated high accuracy. Relative standard deviations (RSD) for repeatability and inter-day reproducibility ranged from 3 % to 11 %. Extraction recovery of both metals exceeded 95 %, indicating the high efficiency of the DES-based extraction process. Environmental assessment using the AGREEprep method yielded a favorable environmental index of 0.54, highlighting the robustness of the approach. This novel use of DES as a stationary phase in flow injection analysis system provides a robust, efficient and environmentally friendly approach to the determination of trace metals in edible oils. This method can also be applied to the analysis of other samples.","PeriodicalId":435,"journal":{"name":"Talanta","volume":"282 ","pages":"127079"},"PeriodicalIF":5.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Towards the development of a portable device based on modified-voltammetric sensors for the detection of illicit drugs and seized samples. 开发基于改良伏安传感器的便携式设备，用于检测非法药物和缉获样品。

IF 5.6 1区化学

Talanta Pub Date : 2025-01-01 Epub Date: 2024-10-16 DOI: 10.1016/j.talanta.2024.127055

Xavier Cetó, Florina Maria Truta, Ana-Maria Dragan, Elena Rodríguez-Franch, Mihaela Tertis, Ángela Sánchez-Pereña, Sara Comellas-Tena, Cecilia Cristea, Manel Del Valle

{"title":"Towards the development of a portable device based on modified-voltammetric sensors for the detection of illicit drugs and seized samples.","authors":"Xavier Cetó, Florina Maria Truta, Ana-Maria Dragan, Elena Rodríguez-Franch, Mihaela Tertis, Ángela Sánchez-Pereña, Sara Comellas-Tena, Cecilia Cristea, Manel Del Valle","doi":"10.1016/j.talanta.2024.127055","DOIUrl":"10.1016/j.talanta.2024.127055","url":null,"abstract":"Illicit drugs are a global burden, not only for society, but also for the various control authorities for which its rapid on-site detection remains a challenge. In this context, the potential of a voltammetric electronic tongue (ET) for the analysis of different drugs is evaluated herein. Concretely, the discrimination and identification of cocaine, heroin, 3,4-Methylenedioxymethamphetamine (MDMA), methamphetamine and ketamine in self-prepared and real samples were attempted. For its analysis, an array of three carbon-based screen-printed electrodes (SPE) was prepared, and their responses towards the different drugs and some of the more common cutting agents and adulterants were assessed by means of square wave voltammetry (SWV). To this aim, a tiny amount (ca. 3 mg) of the drug powder was added to the electrochemical cell containing phosphate buffer (pH 12), shaken, and measured directly without any other pre-treatment than its dilution. Next, to identify their characteristic fingerprint, obtained voltammograms were submitted to linear discriminant analysis (LDA), which allowed to correctly identify the different drugs regardless of the presence of the different cutting agents and other possible interfering compounds, or their concentration. Satisfactory results were obtained both for the synthetic and the \"street\" seized samples, with a classification rate of 100 % for the external test subset of the latter (n = 10).","PeriodicalId":435,"journal":{"name":"Talanta","volume":"282 ","pages":"127055"},"PeriodicalIF":5.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Caregiving Appraisals and Emotional Valence: Moderating Effects of Activity Participation. 护理评价和情绪价值：活动参与的调节作用。

IF 16.4 3区社会学

Research on Aging Pub Date : 2025-01-01 Epub Date: 2024-07-19 DOI: 10.1177/01640275241263770

Jeong Eun Lee, Natasha Lina Nemmers, Joseph Svec, Jinmyoung Cho

引用次数: 0

Achieving precise dual detection: One-tube reverse transcription-recombinase aided amplification (RT-RAA) combined with lateral flow strip (LFS) assay for RNA and DNA target genes from pepper mild mottle virus and Colletotrichum species in crude plant samples. 实现精确的双重检测：单管反转录-重组酶辅助扩增（RT-RAA）结合侧流条带（LFS）检测植物粗样品中辣椒轻度斑驳病病毒和壳斗孢菌的 RNA 和 DNA 目标基因。

IF 5.6 1区化学

Talanta Pub Date : 2025-01-01 Epub Date: 2024-09-18 DOI: 10.1016/j.talanta.2024.126908

Yuhao Cao, Dankan Yan, Huijie Zhou, Kelei Han, Qionglian Wan, Jiejun Peng, Hongying Zheng, Lin Lin, Fei Yan, Xuemei Song

{"title":"Achieving precise dual detection: One-tube reverse transcription-recombinase aided amplification (RT-RAA) combined with lateral flow strip (LFS) assay for RNA and DNA target genes from pepper mild mottle virus and Colletotrichum species in crude plant samples.","authors":"Yuhao Cao, Dankan Yan, Huijie Zhou, Kelei Han, Qionglian Wan, Jiejun Peng, Hongying Zheng, Lin Lin, Fei Yan, Xuemei Song","doi":"10.1016/j.talanta.2024.126908","DOIUrl":"10.1016/j.talanta.2024.126908","url":null,"abstract":"Ensuring the detection sensitivity of both RNA-derived and DNA-derived target genes in a single reaction has posed a significant challenge for on-site detection of plant pathogens. This challenge was addressed by developing a one-tube dual RT-RAA assay combined with LFS for the rapid on-site detection of pepper mild mottle virus (PMMoV) and four Colletotrichum species causing anthracnose in Solanaceous crops. By testing four different combinations of primer groups, two combinations were precisely adjusted within the dual RT-RAA system to balance amplification efficiency and maintain consistent levels of amplification in crude plant samples. Utilizing commercially accessible small-scale equipment and following a streamlined optimization strategy, the assay achieved a limit of detection of 0.32 copies/μL of target genes in the reaction. Importantly, it demonstrated no cross-reactivity with other plant pathogens, thereby affirming the high sensitivity and specificity of the developed dual RT-RAA-LFS detection assay. Moreover, the entire process took only 25 min from sample collection to the visible presentation of results. The assay was validated with 60 field samples and 10 seed samples, producing results consistent with reverse transcription quantitative polymerase chain reaction (RT-qPCR). Notably, it successfully detected PMMoV in systemic leaves without visible symptoms three days post-inoculation, underscoring its effectiveness in early disease detection. This streamlined strategy offers a valuable approach for rapid, low-cost, and highly sensitive on-site simultaneous detection of RNA genome-contained PMMoV and DNA genome-contained Colletotrichum species.","PeriodicalId":435,"journal":{"name":"Talanta","volume":"281 ","pages":"126908"},"PeriodicalIF":5.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142278331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Fluorescence of europium activated by molecular-like silver clusters for the detection of alkaline phosphatase activity. 用于检测碱性磷酸酶活性的分子样银簇激活的铕荧光。

IF 5.6 1区化学

Talanta Pub Date : 2025-01-01 Epub Date: 2024-09-16 DOI: 10.1016/j.talanta.2024.126892

Chen-Xi Zhao, Xiao-Xia Li, Yang Shu

{"title":"Fluorescence of europium activated by molecular-like silver clusters for the detection of alkaline phosphatase activity.","authors":"Chen-Xi Zhao, Xiao-Xia Li, Yang Shu","doi":"10.1016/j.talanta.2024.126892","DOIUrl":"10.1016/j.talanta.2024.126892","url":null,"abstract":"Alkaline phosphatase (ALP) is abnormally expressed in some cancers and promotes the growth, metastasis, and invasion of cancer cells. The detection of ALP is of great significance for both pathological study and clinical detection. In this work, a europium (Eu)-based fluorescence detection sensor was prepared in a mild reaction condition. LaF3:Eu nanoparticles was mixed with ethylene imine polymer (PEI) and Ag+ ions. PEI was used as stabilizer and reducing agent, and Ag+ ions were reduced as molecular-like silver clusters (ML-Ag NCs). The fluorescence of LaF3:Eu nanoparticles was enhanced by ML-Ag NCs through energy transfer. When ascorbic acid 2-phosphate (AAP) was hydrolyzed to ascorbic acid (AA) in the presence of ALP, AA reduced Ag+ ions to silver nanoparticles (Ag NPs) and quenched the fluorescence of LaF3:Eu/PEI/Ag. The activity of ALP was detected by measuring the fluorescence intensity of Eu3+ at 618 nm. In the concentration range from 2.0 to 16.0 U/L, the fluorescence intensity ratio ((F0-F)/F0) had a linear relationship with the logarithm of ALP concentration. The limit of detection (LOD) was 1.3 U/L. Moreover, the ALP activity was detected successfully in cancer cells by this method. The sensing platform has application potential in the detection of ALP activity in biological systems.","PeriodicalId":435,"journal":{"name":"Talanta","volume":"281 ","pages":"126892"},"PeriodicalIF":5.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142278354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Multipath collaboration-based signal amplification on Z-scheme In₂O₃/g-C₃N₄ heterojunction photoelectrode for sensitive photoelectrochemical immunoassay. 在 Z 型 In2O3/g-C3N4 异质结光电电极上进行基于多径协作的信号放大，用于灵敏的光电化学免疫分析。

IF 5.6 1区化学

Talanta Pub Date : 2025-01-01 Epub Date: 2024-09-23 DOI: 10.1016/j.talanta.2024.126935

Yuxiang Dong, Weisa Wang, Cheng Guo, Jialin Wang, Dan Li, Changqing Ye

{"title":"Multipath collaboration-based signal amplification on Z-scheme In2O3/g-C3N4 heterojunction photoelectrode for sensitive photoelectrochemical immunoassay.","authors":"Yuxiang Dong, Weisa Wang, Cheng Guo, Jialin Wang, Dan Li, Changqing Ye","doi":"10.1016/j.talanta.2024.126935","DOIUrl":"10.1016/j.talanta.2024.126935","url":null,"abstract":"The ideal photoelectrode and efficient signaling strategy are pivotal to achieve sensitive photoelectrochemical (PEC) analysis. Here, a multipath collaborative signal amplification-based PEC immunosensor was constructed for the ultrasensitive detection of cytokeratin 19 fragment 21-1. Specifically, the photoelectrode fabricated by Z-scheme In2O3/g-C3N4 heterojunction showed enhanced photocurrent intensity in response to visible light. Meanwhile, the signal probe, horseradish peroxidase functionalized dopamine-melanin nanosphere@Au nanoparticles (HRP-Dpa-melanin NS@AuNPs), were introduced into the system. When the target exists, the signal probe can induce multiple quenching of the photocurrent due to the competition of light absorption, steric hindrance and HRP-mediated biocatalytic precipitation, which effectively inhibit light, electron donor, and electron access to the photoelectrode. The fabricated immunosensor exhibits a wide linear range from 1.0 × 10-3 - 1.0 × 102 ng mL-1 with the detection limit of 0.35 pg mL-1 (S/N = 3) for cytokeratin 19 fragment 21-1 detection. The study enhances sensitivity for PEC detection by utilizing the superior Z-scheme heterojunction photoelectrode, providing a valuable method that combines multiple signal pathways for a synergistic effect in bioanalysis.","PeriodicalId":435,"journal":{"name":"Talanta","volume":"281 ","pages":"126935"},"PeriodicalIF":5.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142338761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Novel electrochemiluminescence platform utilizing AuNPs@Uio-66-NH₂ bridged luminescent substrates and aptamers for the detection of pesticide residues in Chinese herbal medicines. 利用 AuNPs@Uio-66-NH2 桥接发光底物和适配体的新型电化学发光平台检测中药材中的农药残留。

IF 5.6 1区化学

Talanta Pub Date : 2025-01-01 Epub Date: 2024-09-20 DOI: 10.1016/j.talanta.2024.126924

Chengqiang Li, Haifang Wang, Jiashuai Sun, Peisen Li, Jiwei Dong, Jingcheng Huang, Haowei Dong, Lingjun Geng, Zhiping Yu, Pengwei Zhang, Wei Chen, Yemin Guo, Xia Sun

{"title":"Novel electrochemiluminescence platform utilizing AuNPs@Uio-66-NH2 bridged luminescent substrates and aptamers for the detection of pesticide residues in Chinese herbal medicines.","authors":"Chengqiang Li, Haifang Wang, Jiashuai Sun, Peisen Li, Jiwei Dong, Jingcheng Huang, Haowei Dong, Lingjun Geng, Zhiping Yu, Pengwei Zhang, Wei Chen, Yemin Guo, Xia Sun","doi":"10.1016/j.talanta.2024.126924","DOIUrl":"10.1016/j.talanta.2024.126924","url":null,"abstract":"A large number of Chinese herbal medicines (CHMs) are included in daily recipes, but their pesticide residues have aroused more and more concerns. In this paper, an electrochemiluminescence aptasensor was constructed for the trace detection of acetamiprid (ACE) in Angelica sinensis and Lycium barbarum. Possessing a large specific surface area, UiO-66 was modified with amino groups to improve biocompatibility, and the addition of AuNPs allowed UiO-66-NH2 to catalyze the formation of excited states of luminescent molecules (TPrA⁎; Ru(bpy)32+⁎), and AuNPs@UiO-66-NH2 was used to bridge the aptamer (Au-S) and luminescent substrate (peptide bond). The conventional luminescent reagent Ru(bpy)32+ was doped with multi-walled carbon nanotubes (MWCNTs) to obtain a more powerful and stable light signal. After optimizing the experimental parameters, the aptasensor could give results in 10 min with a detection range from 1×10-2-1×104 nM and a lower limit of detection (LOD) of 0.8 pM. The LOD of the study was at least one order of magnitude lower than that of the fluorescence detection method. Furthermore, the accuracy of the aptasensor was validated for spiked recovery experiments.","PeriodicalId":435,"journal":{"name":"Talanta","volume":"281 ","pages":"126924"},"PeriodicalIF":5.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142338762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Signal processing for miniature mass spectrometer based on LSTM-EEMD feature digging. 基于 LSTM-EEMD 特征挖掘的微型质谱仪信号处理。

IF 5.6 1区化学

Talanta Pub Date : 2025-01-01 Epub Date: 2024-09-23 DOI: 10.1016/j.talanta.2024.126904

Chenrui Zhan, Zisheng Ju, Binrui Xie, Jiwen Chen, Qiang Ma, Ming Li

{"title":"Signal processing for miniature mass spectrometer based on LSTM-EEMD feature digging.","authors":"Chenrui Zhan, Zisheng Ju, Binrui Xie, Jiwen Chen, Qiang Ma, Ming Li","doi":"10.1016/j.talanta.2024.126904","DOIUrl":"10.1016/j.talanta.2024.126904","url":null,"abstract":"Miniature mass spectrometers exhibit immense application potential in on-site detection due to their small size and low cost. However, their detection accuracy is severely affected by factors such as sample pre-processing and environmental conditions. In this study, we propose a data processing method based on long short-term memory-ensemble empirical mode decomposition (LSTM-EEMD) to improve the quality of on-site detection data from miniature mass spectrometers. The EEMD method can clearly decompose the different physical feature components in the small-scale spectrometer signals, while the LSTM method can adaptively learn the internal feature relationships of the signals. Thus, by combining the two, the parameters for the EEMD signal reconstruction can be optimized in an adaptive manner, obtaining the optimized coefficients. Compared to the previous EEMD feature enhancement approach, the LSTM-EEMD method not only significantly improves the coefficient of determination (R2) and relative standard deviation (RSD) of the data, enhancing the linear range, but also achieves fully adaptive processing throughout the workflow, greatly boosting the efficiency. By leveraging a miniature mass spectrometer, data for N-acetyl-l-aspartic acid (NAA), 2-Hydroxyglutarate (2-HG), and γ-Aminobutyric acid (GABA) in actual blood samples have been obtained. The experimental results demonstrate that the LSTM-EEMD method can markedly enhance the accuracy and usability of the biological sample data in practical testing, providing new perspectives and possibilities for research and applications in the relevant domain.","PeriodicalId":435,"journal":{"name":"Talanta","volume":"281 ","pages":"126904"},"PeriodicalIF":5.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142338764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Fabrication of biodegradable polyvinyl alcohol-based plastics toward technical lignin valorization.

IF 7.7 1区化学

International Journal of Biological Macromolecules Pub Date : 2025-01-01 Epub Date: 2024-11-26 DOI: 10.1016/j.ijbiomac.2024.138123

Shuang-Lin Zou, Ling-Ping Xiao, Wen-Zheng Yin, Tao Gui, Run-Cang Sun

{"title":"Fabrication of biodegradable polyvinyl alcohol-based plastics toward technical lignin valorization.","authors":"Shuang-Lin Zou, Ling-Ping Xiao, Wen-Zheng Yin, Tao Gui, Run-Cang Sun","doi":"10.1016/j.ijbiomac.2024.138123","DOIUrl":"10.1016/j.ijbiomac.2024.138123","url":null,"abstract":"The fabrication of composite materials from lignin has attracted increasing attention to reducing the dependence of petrochemical-based resources on carbon neutrality. However, the low content of lignin in the biocomposites remains a challenge. Herein, industrial lignin is fractionated by an organic solvent to reduce its structural heterogeneity. Subsequently, the fractionated lignin samples are integrated with polyvinyl alcohol (PVA) to fabricate plastics characterized by uniform thickness and smooth surfaces. The resultant composite films exhibit tensile strength and strain up to 75 MPa and 1050%, respectively, which surpass state-of-the-art lignin-based bioplastics. The mechanism investigations reveal that the enhanced mechanical properties are due to the internal non-covalent interactions derived from the hydroxyl groups of lignin and PVA. Notably, the PVA/lignin films are biodegradable after 92 days' burial in soil. This study paves the way for the rational design of lignin-based biodegradable polymers as sustainable alternatives to conventional plastics.","PeriodicalId":333,"journal":{"name":"International Journal of Biological Macromolecules","volume":" ","pages":"138123"},"PeriodicalIF":7.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142749826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

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