Analytical Letters最新文献_第2页

Dual-Phase Microextraction Strategy Combining Electromembrane Extraction and Magnetic Solid-Phase Adsorption with High-Performance Liquid Chromatography with Fluorescence Detection (HPLC-FLD) for the Efficient Determination of Rhodamine Dyes in Processed Foods 电膜萃取-磁固相吸附-高效液相色谱-荧光检测（HPLC-FLD）双相微萃取技术高效测定加工食品中罗丹明染料

4区化学

Analytical Letters Pub Date : 2025-10-31 DOI: 10.1080/00032719.2025.2579204

Yi Zhang, Jiali Lu, Jiaxiong Zhao, Genrong Li, Shuai Li

{"title":"Dual-Phase Microextraction Strategy Combining Electromembrane Extraction and Magnetic Solid-Phase Adsorption with High-Performance Liquid Chromatography with Fluorescence Detection (HPLC-FLD) for the Efficient Determination of Rhodamine Dyes in Processed Foods","authors":"Yi Zhang, Jiali Lu, Jiaxiong Zhao, Genrong Li, Shuai Li","doi":"10.1080/00032719.2025.2579204","DOIUrl":"https://doi.org/10.1080/00032719.2025.2579204","url":null,"abstract":"This study presents an efficient and highly sensitive method for detecting Rhodamine B and 6 G in complex food matrices. A dual microextraction approach combining electromembrane extraction (EME) and magnetic solid-phase extraction (MSPE) was applied, followed by analysis using high-performance liquid chromatography with fluorescence detection (HPLC-FLD). Critical parameters—such as donor and acceptor phase pH, applied voltage, membrane solvent, extraction time, sorbent dosage, adsorption duration, and elution conditions—were systematically optimized to ensure reliable and reproducible performance. The method showed excellent linearity (1.0–200 ng/mL; R2 = 0.9987 for Rhodamine B and 0.9983 for Rhodamine 6 G), with detection limits of 0.9 ng/mL and 1.2 ng/mL, respectively. Recoveries ranged from 92.1% to 101.9% with relative standard deviations (RSDs) below 5%. Application to real food samples—including spicy strips, candies, and chili oil-based bean snacks—confirmed the method’s accuracy and strong matrix tolerance. Compared to conventional microextraction-chromatographic techniques, this method offers notable advantages in speed, sensitivity, and broad applicability. It is a powerful tool for rapid screening and regulatory monitoring of illicit synthetic dyes in food.","PeriodicalId":7788,"journal":{"name":"Analytical Letters","volume":"59 11","pages":"2037-2052"},"PeriodicalIF":0.0,"publicationDate":"2025-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147879051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Self-Cleaning Surface Enhanced Raman Spectroscopy (SERS) Platform: Hierarchical Au/Titanium (IV) Oxide/Au Nanoarchitecture for the Ultrasensitive and Recyclable Determination of Antibiotics 自清洁表面增强拉曼光谱（SERS）平台：层状Au/Titanium (IV) Oxide/Au纳米结构用于超灵敏和可回收的抗生素测定

4区化学

Analytical Letters Pub Date : 2025-10-21 DOI: 10.1080/00032719.2025.2574468

Xuemei Wang, Xue Zhang, Xue Zhang, Yunsheng Shang, Guohai Yang, Xin Zhang, Xin Zhang, Lulu Qu, Yingqiu Gu

{"title":"Self-Cleaning Surface Enhanced Raman Spectroscopy (SERS) Platform: Hierarchical Au/Titanium (IV) Oxide/Au Nanoarchitecture for the Ultrasensitive and Recyclable Determination of Antibiotics","authors":"Xuemei Wang, Xue Zhang, Xue Zhang, Yunsheng Shang, Guohai Yang, Xin Zhang, Xin Zhang, Lulu Qu, Yingqiu Gu","doi":"10.1080/00032719.2025.2574468","DOIUrl":"https://doi.org/10.1080/00032719.2025.2574468","url":null,"abstract":"Surface-enhanced Raman spectroscopy (SERS) is a powerful tool for the rapid, real-time monitoring of trace aquatic pollutants. However, a major challenge persists in the development of SERS substrates capable of simultaneously determining and degrading pollutants. Herein, a highly sensitive Au/TiO2/Au sandwich-structured substrate was fabricated that exhibited excellent SERS performance with an enhancement factor (EF) of 1.05 × 107. Limits of detection (LODs) as low as 1.42 × 10−7 M for ofloxacin (OFL) and 1.26 × 10−9 M for trimethoprim (TMP) were achieved. Notably, the substrate retained stable SERS activity even after five consecutive detect-degrade cycles. By integrating plasmonic enhancement (for SERS detection) with photocatalytic degradation (for pollutant removal), this dual-functional platform demonstrated high reproducibility, with a relative standard deviation (RSD) below 6%, and long-term stability, retaining 60% of its initial SERS intensity after 60 days of storage. The strategy reported herein provides a practical approach for the simultaneous determination and degradation of antibiotics in aqueous matrices.","PeriodicalId":7788,"journal":{"name":"Analytical Letters","volume":"59 11","pages":"1939-1956"},"PeriodicalIF":0.0,"publicationDate":"2025-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147904487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Encapsulation of Silver Nanoclusters into Zeolitic Imidazolate Framework-8 as a Novel Fluorescent Sensor for Simultaneous Detection and Adsorption of Tetracycline 沸石咪唑酸框架-8包封银纳米团簇作为四环素同时检测和吸附的新型荧光传感器

4区化学

Analytical Letters Pub Date : 2025-10-17 DOI: 10.1080/00032719.2025.2574464

Haijian Liu, Miao Wang, Guofu Huang, Chengjie Li, Guofu Li, Lijuan Feng

{"title":"Encapsulation of Silver Nanoclusters into Zeolitic Imidazolate Framework-8 as a Novel Fluorescent Sensor for Simultaneous Detection and Adsorption of Tetracycline","authors":"Haijian Liu, Miao Wang, Guofu Huang, Chengjie Li, Guofu Li, Lijuan Feng","doi":"10.1080/00032719.2025.2574464","DOIUrl":"https://doi.org/10.1080/00032719.2025.2574464","url":null,"abstract":"The overuse of tetracycline (TRC) antibiotics threatens human health and the environment, highlighting the urgent necessity to develop an effective technology for their detection and control. In this work, silver nanoclusters (Ag-NCs) were encapsulated in zeolitic imidazolate framework-8 to prepare composites (Ag-NCs@ZIF-8) with high luminescence performance and used for TRC detection and adsorption. Because of the protection and restriction of the ZIF-8 layer, Ag-NC luminescence intensity was significantly enhanced. In addition, owing to the outstanding luminescence properties of Ag-NCs and the porousness of ZIF-8, the Ag-NCs@ZIF-8 composites not only served as a fluorescent detector for the sensing of TRC but also displayed good adsorption ability for TRC. In the range of 0.02–400 μM, Ag-NCs@ZIF-8 fluorescence decreased linearly with the TRC concentration with a detection limit of 6.67 nM. Importantly, the present luminescent sensor was employed to quantitatively assess TRC in real water samples, yielding acceptable accuracy and precision and indicating the good application value of this method.","PeriodicalId":7788,"journal":{"name":"Analytical Letters","volume":"59 11","pages":"1971-1983"},"PeriodicalIF":0.0,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147892765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Novel Colorimetric Immunosensor Based on Gold Nanoparticle@ Molybdenum Disulfide/MXene Nanozyme Labels for the Determination of Squamous Cell Carcinoma Antigen (SCCA) 基于金纳米粒子@二硫化钼/MXene纳米酶标记的新型比色免疫传感器检测鳞状细胞癌抗原（SCCA）

4区化学

Analytical Letters Pub Date : 2025-10-11 DOI: 10.1080/00032719.2025.2570529

Qian Lv, Donglin Cao, Wei Xiao, Lili Zou, Zheng Wang

引用次数: 0

Sensitive Determination of Chloramphenicol by a Cerium (IV) Oxide – Gold Nanoparticle-Based Electrochemical Aptasensor 氧化铈-金纳米粒子电化学感应传感器灵敏测定氯霉素

4区化学

Analytical Letters Pub Date : 2025-10-03 DOI: 10.1080/00032719.2025.2569093

Yuyang He, Xiuxia Wei, Haoxiang Wang, Ruoyu Wang, Mengqi Lu, Dongpo Xu

引用次数: 0

Electrochemical Determination of Cd, Cu, Pb, and Hg in Water and Food Using a Glassy Carbon Electrode Modified with Metal-Organic Framework, Polydiallyldimethylammonium, and Polydopamine 用金属-有机骨架、聚二烯基二甲基铵和聚多巴胺修饰的玻碳电极电化学测定水和食物中的Cd、Cu、Pb和Hg

4区化学

Analytical Letters Pub Date : 2025-09-22 DOI: 10.1080/00032719.2025.2560127

Weiheng Kong, Zhu Haitao, Cheng Xingwang, Yu Wang, Song Wei, Zhou Dianbing, Yan Fu, Xiaofeng Yu, Qiong Wu, Fang Han

{"title":"Electrochemical Determination of Cd, Cu, Pb, and Hg in Water and Food Using a Glassy Carbon Electrode Modified with Metal-Organic Framework, Polydiallyldimethylammonium, and Polydopamine","authors":"Weiheng Kong, Zhu Haitao, Cheng Xingwang, Yu Wang, Song Wei, Zhou Dianbing, Yan Fu, Xiaofeng Yu, Qiong Wu, Fang Han","doi":"10.1080/00032719.2025.2560127","DOIUrl":"https://doi.org/10.1080/00032719.2025.2560127","url":null,"abstract":"A functionalized Zr-based metal–organic framework (MOF) was synthesized using UiO-66 as the framework, polydiallyldimethylammonium (PDDA) as the interfacial modifier, and polydopamine (PDA) as the functionalizing agent through a straightforward one-pot hydrothermal reaction. The material underwent characterization through X-ray diffraction to determine its crystal structure, scanning electron microscopy and transmission electron microscopy to analyze its surface morphology and microstructure, and X-ray photoelectron spectroscopy to evaluate its elemental oxidation states. These analyses revealed that UiO-66-PDDA-PDA displayed well-dispersed PDA and an abundance of functionalized hydroxyl and amino groups. Utilizing this innovative functionalized MOF material, an electrochemical sensor was developed based on a UiO-66-PDDA-PDA-modified glassy carbon electrode for the simultaneous determination of Cd2+, Cu2+, Pb2+, and Hg2+. The fabricated electrochemical sensor exhibited excellent selectivity and rapid response to microgram levels of the mentioned heavy metal ions in tea, water, and dairy products using cyclic voltammetry. The sensor demonstrated remarkably low detection limits and stable relative standard deviations (RSDs) for the four heavy-metal ions. Furthermore, the electrochemical properties and applications of the modified electrode were investigated by optimizing operational parameters such as pH, deposition potential, and deposition time to improve the detection of trace ions. This approach offers a rapid screening method for inspectors to verify sample compliance.","PeriodicalId":7788,"journal":{"name":"Analytical Letters","volume":"59 9","pages":"1609-1626"},"PeriodicalIF":0.0,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147902123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Determination of Trace Ethephon in Fruit by Catalytic Methylation with (Trimethylsilyl) Diazomethane (TMSD) and Gas Chromatography-Mass Spectrometry (GC-MS) （三甲基硅基）重氮甲烷（TMSD）催化甲基化-气相色谱-质谱联用法测定水果中痕量乙烯利

4区化学

Analytical Letters Pub Date : 2025-09-11 DOI: 10.1080/00032719.2025.2559414

Yunna Li, Fan Qi, Jinsong Liu, Yunfei Zhao, Jiale Fang, Xueliang Li, Kezhi Jiang

引用次数: 0

Aggregation-Induced Emission Carbon Quantum Dots for High-Resolution Cellular Imaging with Superior Fluorescence 聚集体诱导发射碳量子点用于高分辨率荧光细胞成像

4区化学

Analytical Letters Pub Date : 2025-09-08 DOI: 10.1080/00032719.2025.2556455

Shancai Guo, Hu Q, Xuye Zhang, Zewei Bao, Jinjun Zhao, Jianyuan Lin, Zhijian Jia, Haili Wang, Chunjie Bai, Jianghua Chen

引用次数: 1

A Fluorescence Immunoassay for Serum Neurofilament Light Chain Detection Based on Magnetic Separation and Fluorescent Nanospheres Labeling 基于磁分离和荧光纳米球标记的血清神经丝轻链荧光免疫检测