Article
Chemistry, Analytical
G. Tibbits, N. A. Wall, S. Saunders, J. Babauta, H. Beyenal
Summary: The research demonstrates that depositing a hematite film on the surface of a carbon microelectrode significantly improves the detection sensitivity of FMN. After optimizing the deposition conditions, the hematite-filmed microelectrode shows superior detection performance for FMN at low concentrations compared to the bare carbon fiber microelectrode.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Sedhu Nagarajan, Raj Vairamuthu
Summary: In this study, a tin incorporated chitosan polymer matrix coated pencil graphite electrode was fabricated for the electrochemical detection of riboflavin. The electrode showed sensitive and fast electrocatalytic response with wide linear range and low limit of detection, as well as better stability and antiinference ability. The fabricated electrode demonstrated satisfactory results for medicinal and food analysis applications.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Jianbo Liu, Jing Liu, Yonghui Shang, Jinqiong Xu, Xinyang Wang, Jianbin Zheng
Summary: A multiplex electrochemical immunosensor was developed for the simultaneous detection of two lung cancer markers, CEA and CA125, with high sensitivity and accuracy.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Electrochemistry
D. Sangamithirai, S. Ramanathan
Summary: This study presents the development of an electrochemical sensing platform based on g-C3N4/V2O5 nanocomposites modified glassy carbon electrode for the effective detection of nitroaromatic toxins. The sensor exhibits high sensitivity and detection limits, and is capable of reliable detection in real water samples.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Inorganic & Nuclear
Manman Zhang, Yangguang Li, Fanpeng Ma, Yanhong Niu, Xuan Chen, Bang-Ce Ye
Summary: In this study, metal-organic framework (MOF)-derived Ni3ZnC0.7 composites were prepared and applied for the electrochemical detection of catechol for the first time. The Ni3ZnC0.7 composites showed excellent electrocatalytic properties due to the formation of electroactive functional groups on the electrode surface and the synergistic effects between Ni and Zn. The sensor exhibited a linear range of 0.1-200 μM for catechol with a detection limit of 0.03 μM (S/N = 3). The sensitivity was 42.5295 and 2.6199 μA·μM-1·cm-2, respectively. Moreover, the sensor successfully detected catechol in tap water, river water, and tea samples.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Federico Figueredo, Federico Girolametti, Eleonora Aneggi, Maria Lekka, Anna Annibaldi, Sabina Susmel
Summary: Inorganic phosphorous, as phosphate, is crucial for all living forms on land and in the sea. It is limited in oligotrophic seawaters, and its detection using electrochemical sensors and Mo-decorated electrodes offers a rapid and efficient method for monitoring low concentrations of phosphate.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Jonas Schram, Marc Parrilla, Amorn Slosse, Filip Van Durme, Jenny Aberg, Karin Bjork, Stefan M. Bijvoets, Sharon Sap, Marcel W. J. Heerschop, Karolien De Wael
Summary: The illicit production, distribution, and abuse of amphetamine present a challenge for law enforcement. This study developed a practical paraformaldehyde-coated sensor for the on-site detection of amphetamine in seized drug samples. The sensor showed high sensitivity and was not affected by common diluents and adulterants. Comparison with other devices demonstrated superior performance.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Sondes Ben-Aissa, Rossella De Marco, Sabina Susmel
Summary: This study presents the development of a highly sensitive electrochemical sensor for phosphate detection in marine environments. The sensor utilizes plastic electrodes and a custom-made sensor formulation with polyoxomolybdate anions and periodic mesoporous organosilica to enhance phosphate determination. The sensor achieved competitive sensitivity and selectivity, and was validated using seawater and treated wastewater samples.
Article
Chemistry, Analytical
Xiaochen Liao, Xiao Wang, Changhong Sun, Siyu Chen, Mengmeng Zhang, Lisha Mei, Yu Qi, Chenglin Hong
Summary: The novel ratiometric electrochemical immunosensor developed in this work offers ultrasensitive detection of carcinoembryonic antigen (CEA) by utilizing dual signals which enhance sensitivity and repeatability, showing promising applications in bioanalysis and disease diagnosis.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Antonio Gomes dos Santos Neto, Ana Caroline Ferreira Santos, Jose Antonio de Oliveira Junior, Cristiane Luisa Jost, Camila Silva de Sousa, Marilia Oliveira Fonseca Goulart, Antonio Euzebio Goulart Santana, Sergio Yesid Gomez Gonzalez, Ederson Esteves da Silva, Jessica Eliza Silva Fonsaca, Sergio Humberto Domingues, Daiane Fossatti Dall'Oglio, Hector Aguilar Vitorino, Auro Atsushi Tanaka, Franciele de Matos Morawski, Marco Aurelio Suller Garcia
Summary: We propose a tungsten oxide and reduced graphene oxide nanocomposite (WO3-G/ MWCNT) that was mixed with MWCNTs and exhibited excellent electrochemical performance when deposited on a glassy carbon electrode. The nanocomposite showed a synergic effect towards rutin oxidation and high selectivity in the presence of interferents, demonstrating its potential as an ultra-sensitive voltammetric sensor.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Ma Lucia Abad-Gil, Ma Jesus Gismera, Teresa Sevilla, Jesus R. Procopio
Summary: In this study, the electrochemical behavior of MIT on a gold electrode was investigated and square wave voltammetric methods were developed for its determination at different concentration levels. MIT showed an irreversible and diffusion-controlled oxidation process, with pH-dependent potential and peak current values. By using square-wave voltammetry (SWV) and adsorptive stripping approach (SWAdSV), it is possible to determine MIT in water samples with high sensitivity and low detection limits. Both SWV and SWAdSV methods were successfully applied for the analysis of MIT in different water samples.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Yeru Liu, Sisi Si, Shengyi Dong, Bozhi Ji, Huimin Li, Song Liu
Summary: An ultrasensitive and low-cost electrochemical immunosensor was developed for ProGRP detection, utilizing a 3D reduced graphene oxide-gold nanoparticles composite and SiO2 nanospheres for electrode modification and sandwich structure formation. The sensor exhibited wide linear range, low limit of detection, stability, reproducibility, selectivity, and high sensitivity, showing promise for early lung cancer screening.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Shamim Ahmed Hira, Saravanan Nagappan, Mohammad Yusuf, Aicheng Chen, Jae-Myung Lee, Kang Hyun Park
Summary: In this article, a cobalt-nitrogen and sulfur-doped carbon hierarchical architecture was used as a sensor for the detection of dopamine. The synthesized material provided sufficient electroactive sites and enhanced conductivity. Electrochemical properties and catalytic activity were investigated, and the sensor showed a wide linear range and low detection limit for dopamine. The method was successfully applied to the electrochemical detection of dopamine in human urine samples with high accuracy and reliability. This approach may have potential applications in detecting other neurotransmitters in the future.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Nagarajan Sedhu, Jaganathan Jagadeesh Kumar, Paramasivam Sivaguru, Vairamuthu Raj
Summary: The electronic conductivity and electrocatalytic property of an electrode can be improved by coating its surface with a thin film, polymer, or some nanomaterial; however, the fabrication procedure is time-consuming, expensive, and requires multiple steps. In this study, an electrochemically polymerized polyglycine-coated pencil graphite electrode (PGl/PGE) was prepared for the sensitive detection of riboflavin (RF). The PGl/PGE sensor exhibited significantly enhanced charge transfer compared to the uncoated electrode. The sensor demonstrated a linear concentration range of 2-450 nM for RF detection with a limit of detection of 1.24 nM.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Li-Da Chen, Wei-Jhen Wang, Gou-Jen Wang
Summary: This study developed simple electrochemical electrodes for rapid detection of chloride, sodium, and potassium ions in human serum. Utilizing cyclic voltammetry and square-wave voltammetry, the electrodes demonstrated excellent selectivity, sensitivity, and suitability for ion concentrations in human serum.