Article
Materials Science, Multidisciplinary
Katarina Postolovic, Zorka Stanic
Summary: In this paper, a new electrochemical sensor based on modified carbon paste electrode was developed for the determination of diclofenac. The modified electrode, using chitosan and TiO2 nanoparticles as modification materials, exhibited enhanced electrochemical detection of diclofenac. The sensor showed excellent analytical performance in terms of stability, low detection limit, high sensitivity, and selectivity.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Habtamu Adefris Abebe, Abebe Diro, Shimeles Addisu Kitte
Summary: A carbon paste electrode modified with graphitic carbon nitride was used for the determination of tryptophan. The electrode showed good linear range and detection limit for tryptophan measurement. It was successfully applied for the detection of tryptophan in milk.
Article
Chemistry, Applied
Jinxia Feng, Peihong Deng, Jinyun Xiao, Junhua Li, Yaling Tian, Yiyong Wu, Jun Liu, Guangli Li, Quanguo He
Summary: This study prepared an acetylene black paste electrode (ABPE) modified with oxygen-functionalized multi-walled carbon nanotubes (MWCNT-COOH) for investigating the electrochemical behavior of tyrosine. The modified electrode showed a well-defined anodic peak for tyrosine oxidation, and the oxidation peak current varied linearly with tyrosine concentration. The MWCNT-COOH/ABPE was successfully applied for the determination of tyrosine in food samples.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2021)
Article
Chemistry, Inorganic & Nuclear
Sukanya, B. E. Kumara Swamy, J. K. Shashikumara, S. C. Sharma
Summary: A simple, novel, and cost-effective modified carbon paste electrode was fabricated for the detection of paracetamol. The electrode exhibited excellent electrocatalytic activity and fast electron transfer rate, resulting in accurate detection of paracetamol.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Anna Gorska, Beata Paczosa-Bator, Marek Szlosarczyk, Robert Piech
Summary: A new highly sensitive voltammetric method for captopril determination was developed using a renewable amalgam film electrode. The method showed low detection limit and good linearity range, suitable for analyzing samples such as tablets containing CPT and urine.
Article
Engineering, Environmental
Abdallah Reghioua, Djamel Barkat, Ali H. Jawad, Ahmed Saud Abdulhameed, Abdullah A. Al-Kahtani, Zeid A. ALOthman
Summary: By optimizing various parameters, a new multifunctional nanocomposite adsorbent was developed for effective removal of dyes from water, with high adsorption capacity and rapid removal rate, as well as environmental friendly characteristics.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Ceramics
Somayeh Tajik, Hadi Beitollahi, Mehdi Shahedi Asl, Ho Won Jang, Mohammadreza Shokouhimehr
Summary: The present study utilized a nanocomposite material to modify a carbon paste electrode for the detection of sulfamethoxazole. The novel sensor showed a linear response with low detection and quantitation values for SMZ, making it suitable for analyzing SMZ in real samples.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Multidisciplinary
Oznur Gungor, Beyza Kilic, Tugce Seren Karasurmeli, Imren Ozcan, Suleyman Koytepe
Summary: Chitosan-based polyurethane membrane modified electrodes were prepared for sensitive detection of the important biomolecule alpha-lipoic acid. The electrodes showed wide linear detection range, low detection limit, and short response time, indicating their potential as a good alternative for ALA determination.
Article
Chemistry, Analytical
Awadh O. AlSuhaimi, Khalid Althumayri, Hussain Alessa, Ali Sayqal, Amal T. Mogharbel, Bandar R. Alsehli, Nashwa M. El-Metwaly
Summary: This research presents the development and electroanalytical performance of a novel carprofen voltammetric carbon paste electrode (CPEs). The electrode matrix is fortified with zeolite nanostructures, resulting in an effective electrocatalytic activity that facilitates the oxidation of carprofen molecules. The proposed electrooxidation mechanism involves the oxidation of the enamine N atom through the transfer of delocalized lone pair of electrons, along with the participation of one proton. The utilization of ZY/CPEs allows for simultaneous quantification of carprofen in the presence of various interferents and degradation products, with high sensitivity and selectivity. The presented voltammetric analytical technique exhibits comparable recovery values compared to official chromatographic techniques for monitoring carprofen residues in veterinary and biological samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Multidisciplinary Sciences
Samar Y. Al-Nami, Ahmed Hameed, Omer A. Azher, Nasser A. Alamrani, Enas Aljuhani, Hana M. Abumelha, Nashwa M. El-Metwaly
Summary: In this study, a novel TIC voltammetric sensor was constructed and its electroanalytical applications were discussed. The sensor, which integrated working carbon paste electrodes with zeolite nanostructures, exhibited efficient electrocatalytic activity towards the oxidation of TIC molecule. Through optimization of the measuring conditions, an irreversible oxidation peak of TIC was observed at 0.954 V. The electrochemical behavior and molecular orbital calculations confirmed the proposed oxidation mechanism. Calibration curves showed good linearity for TIC concentration ranging from 8.8 to 1665 ng mL(-1) with low LOD and LOQ values. The introduced TIC voltammetric sensor demonstrated improved performance in terms of reproducibility and operational lifetime. It could also accurately determine TIC in the presence of degradation outcomes and interferents. The proposed voltammetric approach provided a sensitive and reliable method for the determination of TIC in biological fluids and pharmaceutical samples, in agreement with spectrophotometric measurements.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Salhah D. Al-Qahtani, Samar Y. Al-nami
Summary: A novel copper oxide nanoparticles-based sensor was developed for the differential pulse voltammetric determination of vonoprazan with enhanced sensitivity. The sensor showed prolonged stability and good reproducibility, allowing accurate assaying of vonoprazan in biological fluids.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Yujiao Yan, Shui Guan, Shuping Wang, Jianqiang Xu, Changkai Sun
Summary: The novel PCA-g-CMCS/OSA hydrogel developed in this study demonstrates superior antioxidant activity and potential in cell culture and biocompatibility. The hydrogel shows protective effects against oxidative damage and excellent swelling and biodegradability properties.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Physical
P. A. Pushpanjali, J. G. Manjunatha, N. Hareesha, Edwin S. D'Souza, M. M. Charithra, N. S. Prinith
Summary: The study demonstrates the effective detection of cetirizine in the presence of paracetamol using a carbon nanotube paste electrode modified with electrochemically polymerized L-Leucine. By optimizing the experimental conditions, a calibration plot in the concentration range of 5 μM to 50 μM of CTZ was achieved with high recovery rates.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Analytical
Shu-Yu Lin, Chia-Yu Lin
Summary: This study presents a high specificity and electrocatalytic activity nanozyme based on carbon nanotube/2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) nanocomposite for the point-of-care diagnosis of microalbuminuria in urine. The modified electrode exhibits promising sensing characteristics without the need for sample pretreatment or additional label probes.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Analytical
Samar Y. Al-nami, Hussain Alessa, Ali Q. Alorabi, Omaymah Alaysuy, Ahmed Hameed, Nasser A. Alamrani, Salhah D. Al-Qahtani, Nashwa M. El-Metwaly
Summary: The present study constructed and characterized a novel voltammetric carbon paste sensor for penciclovir (PCV) fortified with iron oxide nanoparticles (FeONPs/CPEs). The integration of the electrode matrix with iron oxide nanoparticles significantly enhanced the PCV oxidation peak based on its electrocatalytic activity. The electrooxidation reaction of the PCV molecule was found to proceed through the oxidation of the terminal amino group of the guanine moiety with the participation of one electron and two protons.
MICROCHEMICAL JOURNAL
(2023)