Article
Biochemical Research Methods
Jingyi Wang, Wenmin Zhang, Hui Chen, Qingqing Ding, Jinhua Xu, Qidong Yu, Min Fang, Lan Zhang
Summary: In this study, a stable and highly conductive copper-doped phthalocyanine metal covalent organic framework (CuPc-MCOF) was synthesized and used as an extraction material for trace chlorophenols (CPs). By combining electro-enhanced solid-phase microextraction (EE-SPME) with gas chromatography-tandem mass spectrometry (GC-MS/MS), a sensitive and reproducible CPs detection method was established. The developed CuPc-MCOF coating material showed excellent extraction performance and potential application in the analysis of trace polar pollutants from complex samples.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Chemistry, Applied
Shihuan Li, Senwei Feng, Ann Van Schepdael, Xu Wang
Summary: This study proposes a sensitive method for detecting the impact of bisphenols and triclosan, commonly found in various products, on human health. The results show that the method has low intra-day and inter-day variations, as well as good reproducibility and lifespan.
Article
Chemistry, Analytical
Yuanyuan Fang, Fangzhou Zhou, Qian Zhang, Chao Deng, Minying Wu, Hsin-hui Shen, Yi Tang, Yajun Wang
Summary: In this study, a templating strategy with SiO2 nanofibers was developed to synthesize COF HNFs-coated stainless steel fibers for SPME application, leading to significantly enhanced enrichment performance for trace analytes. The method also offers advantages such as tunable coating thickness, high sensitivity, and excellent reusability.
Article
Chemistry, Analytical
Xiao-Xue Jiang, Li-Qing Yu, Yue-Na Sun, Yuan Li, Hui-Min Li, Yun-Kai Lv
Summary: In this study, hollow ZIF-7 was prepared by etching ZIF-7 with tannic acid, and a hollow ZIF-7 coated fiber for solid phase microextraction was fabricated. The hollow structure improved extraction performance and analyte diffusion rate. The fiber showed high extraction capacity, enhancement factors, good linearity, low detection limits, and good precision with the advantages of large surface area, unique porous structure, hydrophobic interaction, and gate-opening effect.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Hexun Chen, Jiangyi Wu, Qingbiao Xiong, Xiaojing Li, Xiaojia Huang
Summary: In order to efficiently capture fluoroquinolones (FQs) from complex samples, a hybrid metal-organic framework (MOF)@monolith material (HMM) was developed and used as the extraction medium for multi-monolith fibers solid phase microextraction (MMF-SPME). The HMM/MMF-SPME exhibited satisfactory capture performance with high sensitivity and good precision. The developed technique can be a prominent method for capturing trace FQs in complex samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Mir Mahdi Abolghasemi, Marzieh Piryaei
Summary: The study developed a coordination replication approach using Cu(OH)2 nano-rod arrays as sacrificial template to create Cu-based metal-organic frameworks. The technique showed good sensitivity and linear range under optimal conditions, along with quick thermal stability and high relative recovery rate.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Chen Yu, Jue Zhang, Xiaogang Luo, Juan Zhang
Summary: A novel MOF/COF composite was designed and prepared as a coating fiber for HS-SPME, utilizing the excellent physicochemical properties of metal organic framework (MOF) and covalent organic framework (COF). The composite was physically coated onto a stainless-steel wire for HS-SPME of PAHs. The established method showed excellent repeatability and reproducibility, with linear ranges of 0.2-50.0 ng mL-1, limits of detection and quantitation ranging from 0.02-0.07 ng mL-1 and 0.07-0.24 ng mL-1, respectively, and relative standard deviations (RSD) for PAHs all less than 7.05%.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Yan Gao, Kangjia Sheng, Tao Bao, Sicen Wang
Summary: This review highlights the importance of sample preparation in pharmaceutical analysis and the recent applications of organic molecule-based porous materials, such as MOFs and COFs, as coating materials in SPME. It also discusses the potential use of other organic porous materials in pharmaceutical analysis and provides references for further research and development in the field of SPME.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2022)
Article
Chemistry, Analytical
Andres J. Rascon, Priscilla Rocio-Bautista, David Moreno-Gonzalez, Juan F. Garcia-Reyes, Evaristo Ballesteros
Summary: The metal-organic framework CIM-80(Al) was proposed as a sorbent coating for solid-phase microextraction fibers. The CIM-80(Al)-based microextraction fibers with a thickness of 3.5 μm were used to isolate and determine 14 phthalate esters in bottled water with promising results. The extraction efficiency was comparable to commercial coatings in a total of 16 bottled water samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Leila Ghaedrahmati, Alireza Ghiasvand, Nahid Heidari
Summary: Metal-organic frameworks with nanoporosity, crystal structure, good stability, and high surface-to-volume ratio have been used as efficient sorbents for adsorption and separation purposes. In this study, a metal-organic framework/polyaniline magnetite nanocomposite was successfully synthesized for solid-phase microextraction fiber, which was then coupled with gas chromatography-flame ionization detection for the extraction and determination of aldehydes in biological samples.
JOURNAL OF SEPARATION SCIENCE
(2021)
Article
Biochemical Research Methods
Xuezhi Sun, Zhibo Fu, Tianyu Jiang, Fanghong Ning, Yongzhe Cheng, Tianhao Fu, Mingsheng Zhu, Hongyang Zhang, Min Zhang, Ping Hu
Summary: A simple and efficient D-SPE method combined with GC-MS/MS was developed to determine OCP in honey using CD-MOF/TiO 2 as an adsorbent. The method established has a wide linear range and suitable precision for OCP analysis in honey samples.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Article
Chemistry, Analytical
Li Xu, Wei Hu, Xiaogang Luo, Juan Zhang
Summary: A novel MIL-88-NH2@COF composite was prepared by growing covalent organic framework (COF) on the surface of metal-organic framework (MOF). The composite exhibited excellent extraction performance for various analytes, especially for polycyclic aromatic hydrocarbons (PAHs) with a high enrichment factor. The SPME-GC-FID method based on MIL-88-NH2@COF fiber showed wide linear range, low limit of detection, and high coefficient of determination.
Review
Chemistry, Analytical
Jonas da Silva Sousa, Helio Oliveira do Nascimento, Hiago de Oliveira Gomes, Ronaldo Ferreira do Nascimento
Summary: This review summarizes literature on the analysis of pesticide classes in surface water and groundwater, focusing on the toxicity of multiclass pesticides and recent advances in sample preparation methods like SPE and SPME. Different pesticide regulations across countries, improvements in SPME fibers, and the preference for tandem MS detection systems are highlighted as key points discussed in the literature.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Applied
Iran Ocana-Rios, Bhawana Thapa, Jared L. Anderson
Summary: A method combining matrix solid-phase dispersion and solid-phase microextraction coupled to gas chromatography-mass spectrometry was developed for analyzing parabens, musks, antimicrobials, UV filters, and an insect repellent in fish. The method was optimized and validated using tilapia and salmon samples. The miniaturized method showed good linearity, precision, and accuracy for all analytes, and the detection limits were significantly improved using the SPME Arrow format.
Article
Food Science & Technology
Shaoyun Han, Ke He, Jing An, Mengmeng Qiao, Runhui Ke, Xiao Wang, Yang Xu, Xiuying Tang
Summary: This study identifies the primary volatile organic chemicals (VOCs) in the secretions of the red flour beetle (T. castaneum) using headspace solid-phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS). Seven specific VOCs unique to T. castaneum are found and can be used as volatile markers to identify its presence in grain storage facilities.
Article
Biochemical Research Methods
Qingqing Li, Wenmin Zhang, Yuheng Guo, Hui Chen, Qingqing Ding, Lan Zhang
Summary: A material called oxygenated carbon nanotubes cages (OCNTCs) was prepared for the extraction of aromatic amines (AAs) in food contact materials. This material showed high selectivity for AAs and a sensitive analysis method was developed with low limits of detection and good precision.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Article
Chemistry, Analytical
Guancheng Liu, Hui Chen, Wenmin Zhang, Qingqing Ding, Juan Wang, Lan Zhang
Summary: The magnetic carbon nanotube covalent organic framework composite (MCNTs@TpPa-1) prepared through mechanochemical synthesis showed excellent extraction performance for microcystins (MCs) enrichment. The established MSPE method, combined with HPLC-MS/MS, exhibited efficient, sensitive, and convenient detection of trace MCs in water samples. The results demonstrated the significant potential of MCNTs@TpPa-1 as an MSPE sorbent for trace MCs detection, opening up novel prospects for preparing magnetic covalent organic frameworks (COFs) with excellent extraction properties.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Yuheng Guo, Wenmin Zhang, Hui Chen, Qingqing Ding, Qingqing Li, Lan Zhang
Summary: In this study, a nitrogen doped graphitic carbon networks (NG-CNTW) coated fiber was fabricated by direct carbonization of nanosized ZIF-67 crystals for efficient extraction of pyrethroids. The NG-CNTW coating exhibited high surface area and porous structures, allowing for diffusion and adsorption of target molecules. The SPME-GC-MS/MS method showed wide linearity range, low detection limits, and good repeatability for 8 kinds of pyrethroids.
Article
Chemistry, Analytical
Yujia Ying, Huilin Li
Summary: Enzymes play a crucial role as biological catalysts in accelerating biochemical reactions in living organisms. This study proposes a convenient method for monitoring enzymatic catalytic processes using native top-down mass spectrometry. By exploring the heterogeneity of the chymotrypsin sample and using tandem mass spectrometry, the researchers were able to monitor covalent and noncovalent enzymatic complexes, substrates, and products during catalysis. The results demonstrate that this method has the potential to be a promising tool for characterizing biocatalysts.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Kang Yang, Shuaibo Shi, Jinyu Wu, Shaolong Han, Shengdi Tai, Shishen Zhang, Kun Zhang
Summary: H2O and D2O are important analogues closely related to various industries and monitoring fields. This study successfully distinguishes and detects H2O and D2O by designing a novel eu(III)-macrocycle with dual emitters, Eu-2a, and conducting fluorescence titration experiments.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Julia Kuligowski, Alvaro Perez-Rubio, Marta Moreno-Torres, Polina Soluyanova, Judith Perez-Rojas, Ivan Rienda, David Perez-Guaita, Eugenia Pareja, Ramon Trullenque-Juan, Jose Castell, Marcha Verheijen, Florian Caiment, Ramiro Jover, Guillermo Quintas
Summary: This study introduces a novel variable selection approach called cluster PLS (c-PLS) to assess the joint impact of variable groups selected based on biological characteristics on the predictive performance of a multivariate model. The usefulness of c-PLS is shown using miRNomic and metabolomic datasets obtained from the analysis of liver tissue biopsies.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Meixue Lai, Lijie Zhong, Siyi Liu, Yitian Tang, Tingting Han, Huali Deng, Yu Bao, Yingming Ma, Wei Wang, Li Niu, Shiyu Gan
Summary: This study presents a method for constructing wearable sweat electrolyte sensors using carbon fiber-based solid-contact ion-selective electrodes (SC-ISEs). By using carbon fibers extracted from commercial cloth as electrode material, the cost and reproducibility issues of flexible SC-ISEs were addressed. The results showed that the carbon fiber-based SC-ISEs exhibited reversible voltammetric and stable impedance performances, and had high reproducibility of standard potentials between normal and bending states.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Ke Yang, Ying Liu, Min Deng, Peipei Wang, Dan Cheng, Songjiao Li, Longwei He
Summary: A near-infrared fluorescent probe has been developed to accurately measure the levels of peroxynitrite (ONOO-) in the endoplasmic reticulum (ER) in acute lung injury (ALI). The probe demonstrated rapid response, high selectivity, good sensitivity, and enhanced fluorescence intensity in response to ONOO-. It was successfully used to detect changes in ONOO- levels and showed significant increases in an ALI cell model and an ALI mouse model.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yanping Wang, Yuemei Chen, Kejun Li, Jinrong Zhou, Xin Yuan, Mei Zhang, Ke Huang
Summary: In this work, a portable analytical system based on point discharge chemical vapor generation atomic emission spectrometry (PD-CVG-AES) coupling with gold filament enrichment was designed. The highly sensitive analysis of Hg2+ indirectly realized the detection of ascorbic acid (AA). The measurement is based on the fact that Ag+ can decrease the concentration of Hg2+ by forming Ag-Hg amalgam in the presence of the reductant SnCl2, while AA can pre-reduce Ag+ to Ag0, leading to the generation of silver nanoparticles (Ag NPs). The developed novel analytical strategy broadens the application of microplasma-based AES and offers a higher level of sensitivity compared to current AA detection techniques.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yundi Huang, Bo Song, Kaiwen Chen, Deshu Kong, Jingli Yuan
Summary: This study developed two lysosome-targetable background-free TGL probes for efficient and accurate detection of 1O2, which can be used for monitoring endogenous 1O2 concentrations in lysosomes and discriminating variability induced by different photosensitizers. Furthermore, a smart luminescent sensor film was successfully prepared for on-site 1O2 production detection during PDT processes, offering a promising clinical monitoring tool for skin diseases.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Wei Lang, Jia-Mei Qin, Qian-Yong Cao
Summary: A novel polymer-based probe P1 was successfully synthesized for fluorescently ratiometric sensing of H2S with high selectivity and sensitivity. A smartphone sensing platform was constructed to conduct visual quantitative detection of H2S. P1 can be employed in evaluating the level fluctuations of H2S in living cells, testing water samples/wine samples, and monitoring food freshness.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yuanyuan Qin, Shuda Liu, Shuyun Meng, Dong Liu, Tianyan You
Summary: The study developed a split aptamer-based sandwich-type ratiometric biosensor for the detection of 17 beta-estradiol (E2) using photoelectrochemical and electrochemical assays. The biosensor utilized split aptamer fragments to recognize E2 and trigger a hybridization chain reaction, resulting in the production of double-stranded DNA labeled with CdTe quantum dots. This DNA complex was able to sensitize CdTe quantum dots and generate response signals for E2 detection. The developed biosensor demonstrated high sensitivity and accuracy with two linear ranges and low detection limits.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Siriwan Teepoo, Jongjit Jantra, Khaunnapa Panapong, David Taiwo Ajayi
Summary: A novel immunochromatographic assay based on hyperbranched Au plasmonic blackbodies with a smartphone readout was developed for rapid and sensitive detection of leucomalachite green residues in fish and shrimp products.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Andrea L. Larraga-Urdaz, Borja Moreira-Alvarez, Jorge Ruiz Encinar, Jose M. Costa-Fernandez, Maria Luisa Fernandez-Sanchez
Summary: A major challenge in the 21st century is the development of point-of-care diagnostic tools. In this study, a highly sensitive and simple bioassay using AuNPs and MNAzymes was developed for rapid detection and quantification of miRNA-4739. The proposed strategy shows potential for breast cancer diagnosis.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Xiaohan Zhao, Anyu Wang, Lingzi Zhai, Jiuhe Gao, Sizhe Lyu, Yingshan Jiang, Tian Zhong, Ying Xiao, Xi Yu
Summary: A novel method using polystyrene-coated magnetic nanoparticles for extracting monohydroxy polycyclic aromatic hydrocarbons from urine samples was investigated. The proposed method is simple, sensitive, and efficient, with desirable sensitivity for analyzing low-abundance metabolites in large volumes of complex urine samples.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Ke Quan, Yuqing Zeng, Wenke Zhang, Fengfeng Li, Mengjiao Li, Zhihe Qing, Linlin Wu
Summary: In this study, a visual and reusable biosensor was developed for detecting substrates that are closely associated with human physiological health. The immobilized oxidase showed higher stability and sensitivity under harsh conditions, enabling reliable detection of substrates in complex fluids.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Dongjuan Wang, Xiuqian Ding, Jinling Xie, Juan Wang, Guanhao Li, Xin Zhou
Summary: In this study, a three-in-one sensor was developed for real-time detection of biogenic amines (BAs) with high sensitivity and selectivity. The sensor showed multimodal responses and could be used to fabricate portable devices for on-site non-destructive assessment of food spoilage indicators.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Jinting Meng, Zihao Xu, Shasha Zheng, Hongqun Yang, Tianfu Wang, Hong Wang, Yingwei Zhang
Summary: This study demonstrates the development of a cascade signal amplification system using a multi-pedal DNA walker and strand displacement reactions for the electrochemical detection of miRNA-155. The biosensor exhibited high sensitivity, selectivity, and the potential for clinical applications.
ANALYTICA CHIMICA ACTA
(2024)