Article
Chemistry, Inorganic & Nuclear
Teh Ubaidah Noh, Azila Abd. Aziz, Afzan Mahmad, Nuralina Badrol
Summary: This study explored the covalent attachment of skin sensitizer using a modified electrode and nanoparticles. The modified electrode showed good reproducibility and stability, making it suitable for routine screening of skin sensitization during early product development.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Giancarla Alberti, Camilla Zanoni, Stefano Spina, Lisa Rita Magnaghi, Raffaela Biesuz
Summary: This work presents the development of a MIP-based screen-printed potentiometric cell for sensing the pesticide atrazine. The cell is composed of three screen-printed electrodes, with the working and counter electrodes made of graphite-ink and the pseudo-reference electrode made of silver/silver chloride-ink. The cell shows a linear increase in potential with atrazine concentration in a range of 5 x 10(-7) to 5 x 10(-6) M, and a limit of detection of 4 x 10(-7) M.
Article
Chemistry, Analytical
Alejandro Fidel Alba, Roberto Fernandez-de Luis, Joseba Totoricaguena-Gorrino, Leire Ruiz-Rubio, Julia Sanchez, Jose Luis Vilas-Vilela, Senentxu Lanceros-Mendez, Francisco Javier Del Campo
Summary: Screen printed graphite electrodes are commonly used in electroanalysis and electrochemiluminescence (ECL) applications. This study investigates the ECL of the Ru(bpy)32+/TPrA system on different graphite electrodes printed from various graphite pastes. The ECL intensity of the graphite electrodes is found to depend on electrode kinetics and wettability, which are influenced by paste composition.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Environmental Sciences
Jayendra Kumar Himanshu, G. B. V. S. Lakshmi, Awadhesh Kumar Verma, Amit Ahlawat, Pratima R. Solanki
Summary: Novel carbon quantum dots-graphite composite ink-based screen-printed electrodes were used to assemble a highly sensitive electrochemical aptasensor against chlorpyrifos. The aptasensor showed a broad linear range, good selectivity, and reliable applicability in real samples.
ENVIRONMENTAL RESEARCH
(2024)
Article
Chemistry, Multidisciplinary
Isao Shitanda, Kaishi Miyazaki, Noya Loew, Ryosuke Esaka, Yoshinao Hoshi, Masayuki Itagaki
Summary: The novel sticker device developed can convert any metal or alloy into the working electrode of a three-electrode system, making measurements simple and accurate. By using this device, materials can be easily evaluated by dropping a small amount of solution.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Tomohiro Matsunaga, Takeshi Kondo, Isao Shitanda, Yoshinao Hoshi, Masayuki Itagaki, Toshifumi Tojo, Makoto Yuasa
Summary: The study found that hydrogen-terminated boron-doped diamond printed electrode was the most suitable for the sensitive detection of L-cysteine at low concentrations, exhibiting a steep slope in its calibration curve and low background current density. This printed electrode had a lower limit of detection and wider linear concentration range compared to a hydrogen-boron-doped diamond thin-film electrode.
Article
Chemistry, Multidisciplinary
Somayeh Tajik, Hadi Beitollahi, Sayed ali Ahmadi, Mohammad Bagher Askari, Antonio Di Bartolomeo
Summary: We successfully developed a sensor for hydroxylamine with high sensitivity and a broad linear dynamic range through surface modification, which can be used for detecting hydroxylamine in water samples.
Article
Chemistry, Analytical
Chang Zhang, Chao Li, Xiaojun Han
Summary: Heavy metal pollution is a global environmental issue. In this study, a screen printed electrode modified with bismuth powder (Bi-SPE) was prepared for the detection of Cd2+. The Bi-SPE exhibited a linear detection range of 5-50 μg/L and a detection limit of 4.80 μg/L for Cd2+. Compared to the bare screen printed electrode, Bi-SPE showed better detection performance by providing more active sites for heavy metal ion predeposition. The advantage of Bi-SPE is its ability to detect heavy metal ions without the addition of bismuth ions in the solution, enabling in-situ detection. The prepared Bi-SPE holds great potential for the detection of heavy metal ions in real water samples.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Elena Alberto, Julio Bastos-Arrieta, Clara Perez-Rafols, Nuria Serrano, M. Silvia Diaz-Cruz, Jose Manuel Diaz-Cruz
Summary: A DPV method using SPCEs was developed for the determination of SMX, showing a good detection limit (15 μg/L) and a wide linear range (50-600 μg/L) with good repeatability and reproducibility. The method was successfully applied to the analysis of a spiked tap water sample, demonstrating high reproducibility and good trueness. Additional considerations were made on the pH-dependent electrochemical oxidation of SMX and the role of the free terminal amino group in oxidation.
MICROCHEMICAL JOURNAL
(2023)
Article
Environmental Sciences
Hadi Beitollahi, Fariba Garkani Nejad, Zahra Dourandish, Somayeh Tajik
Summary: This study developed an electrochemical sensor for the detection of amaranth, a potentially toxic dye used in the textile industry. The sensor utilized polypyrrole nanotubes to enhance the electrocatalytic activity for amaranth detection. The results showed that the sensor had a wide linear dynamic range and a low limit of detection, making it suitable for practical applications.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Analytical
Yuliang Zhao, Hongyu Zhang, Yang Li, Xiaoai Wang, Liang Zhao, Jianghong Xu, Zhikun Zhan, Guanglie Zhang, Wen Jung Li
Summary: An electrochemical HbA1c sensor with high sensitivity and good specificity is proposed, which is based on the electrochemical immune principle. The sensor's properties were characterized and analyzed, and the experimental results demonstrated its satisfactory performance in terms of detection limit, sensitivity, repeatability, stability, and anti-interference capabilities.
Article
Chemistry, Physical
Zhixue Yu, Hui Wang, Ruipeng Chen, Yue He, Mengting Zhou, Chaoqun Sun, Fan Zhang, Xiangfang Tang, Benhai Xiong
Summary: Ti3C2 Mxene is a highly conductive and high-capacity electrochemical material that can be used in all-solid-state ion-selective electrodes. The modified Ti3C2 Mxene electrode exhibits high capacitance and fast charge transfer ability, making it an accurate and fast responder to Ca2+.
SURFACES AND INTERFACES
(2023)
Article
Biochemistry & Molecular Biology
Sherif A. Abdel-Gawad, Ali Altharawi
Summary: Stability-indicating methods are important tools for ensuring the safety and efficacy of active pharmaceutical ingredients. This study compared the determination methods of bromazepam in the presence of degradation products and impurities using two membrane electrodes. The fabricated sensors showed excellent linear electrochemical response and performance, and optimal conditions were identified for different pH ranges. The fabricated electrodes were successfully applied for the quantification of bromazepam in tablet form without any pretreatment procedure.
Article
Chemistry, Analytical
Kanpitcha Somnet, Suphatsorn Thimoonnee, Chanpen Karuwan, Wichayaporn Kamsong, Adisorn Tuantranont, Maliwan Amatatongchai
Summary: A novel electrochemical sensor based on a screen-printed graphene paste electrode modified with platinum nanoparticles and coated with a molecularly imprinted polymer was proposed for sensitive and cost-effective detection of paraquat herbicide. The sensor showed high sensitivity, selectivity, and a lower detection limit for quantification of paraquat residue on vegetables and fruits. The ready-to-use MIP sensor offers an alternative approach for food safety applications.
Article
Chemistry, Applied
Luis M. C. Ferreira, Paulo R. Martins, Cristiane G. Silva, Luiz H. Marcolino-Junior, Marcio F. Bergamini, Fernando C. Vicentini
Summary: A lab-made screen-printed electrode based on poly(ethylene terephthalate) substrate modified with a hybrid film containing gold nanoparticles-decorated graphene was developed for the detection of ROX in chicken purge and river water samples. The electrode exhibited enhanced electroactive area and charge transfer due to the presence of nanostructured matrix. The method achieved a limit of detection of 60 nM and 97 nM for ROX in diluted river water and chicken purge samples, respectively.
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)