Article
Materials Science, Multidisciplinary
Poonam Siwatch, Kriti Sharma, Nirmal Manyani, Ravneet Kaur, S. K. Tripathi
Summary: Nanocomposites of transition metal sulphides, such as NiCoS, ZnCoS, CuCoS, and NiZnCuCoS, have been prepared by hydrothermal synthesis method and used as supercapacitor electrode materials. The nanocomposites exhibit the formation of quantum dots with crystallite sizes ranging from 3.5 nm to 6.0 nm. Among the prepared nanocomposites, CuCoS nanocomposites showed the highest specific capacitance, while NiZnCuCoS nanocomposites exhibited the highest potential window and energy density. The multi-metal doping improved the supercapacitive behavior of transition metal sulphides.
CURRENT APPLIED PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Yiting Zheng, Qingxuan Li, Chenfei Wang, Ming Su
Summary: This paper introduces a new method for enhancing the sensitivity of fluorescence detection of lead ions in water by utilizing the volume reduction of hydrogels upon dehydration. The method is low-cost, easy to operate, and highly sensitive, making it suitable for detecting lead ions in drinking water.
Article
Engineering, Environmental
Celal Duran, Aslihan Yilmaz Camoglu, Duygu Ozdes, Olcay Bekircan
Summary: This research successfully achieved the simultaneous analysis of Cu(II), Cd(II), and Ni(II) ions in water samples by using a novel organic co-precipitant CCMBATT in combination with carrier element-free co-precipitation technique. The highest efficiency in terms of heavy metal recovery was achieved by optimizing factors such as solution pH, co-precipitant concentration, and sample volume.
WATER SCIENCE AND TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Abida Ashraf, Muhammad Islam, Muhammad Khalid, Anthony P. Davis, Muhammad Tayyeb Ahsan, Muhammad Yaqub, Asad Syed, Abdallah M. Elgorban, Ali H. Bahkali, Zahid Shafiq
Summary: Highly selective and sensitive 2,7-naphthyridine-based colorimetric and fluorescence Turn Off chemosensors (L1-L4) are reported for detection of Ni2+ in aqueous media. The receptors showed distinct color change from yellow to red with reversible and pH independent changes. The detection limits for Ni2+ by L1-L4 are lower than the permissible value in drinking water, and the binding stoichiometries were found to be 2:1, supporting the experimentally determined complexation ratios.
SCIENTIFIC REPORTS
(2021)
Article
Food Science & Technology
Sadin Ozdemir, Zeynep Turkan, Ersin Kilinc, Elif Esra Altuner, Fatih Sen
Summary: This study investigates the effectiveness of Anoxybacillus flavithermus-functionalized iron oxide nanoparticles as a magnetic sorbent for preconcentrating toxic metal ions. Optimal conditions were determined through the adjustment of experimental parameters. The feasibility of the method was verified through testing on certified reference materials.
FOOD AND CHEMICAL TOXICOLOGY
(2022)
Article
Chemistry, Analytical
Nazime Ebrar Karlidag, Rabia Demirel, Hakan Serbest, Fatma Turak, Sezgin Bakirdere
Summary: In this study, a method for the determination of trace levels of cobalt was proposed using a flame atomic absorption spectrophotometry system after magnetic hydrogel based dispersive solid phase extraction. The method showed improved detection power compared to conventional FAAS and demonstrated accuracy in quantification of cobalt in chamomile tea matrix.
ANALYTICAL METHODS
(2022)
Article
Electrochemistry
Ada Raucci, Antonella Miglione, Michele Spinelli, Angela Amoresano, Stefano Cinti
Summary: The article introduces a portable electrochemical strip based on bismuth film and Whatman No.1 chromatographic paper for the determination of lead and cadmium in clinical, environmental, and food matrices. These strips have high sensitivity and easy-to-use features, significantly reducing the time and cost of on-site measurements.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Diana Nelli, El Yakout El Koraychy, Manuella Cerbelaud, Benoit Crespin, Arnaud Videcoq, Alberto Giacomello, Riccardo Ferrando
Summary: The solidification of AgCo, AgNi, and AgCu nanodroplets in the size range of 2-8 nm was studied using molecular dynamics simulations. Despite the surface segregation of Ag in the bulk solid, the simulations revealed clear differences in the solidification pathways. AgCo and AgNi separate in the liquid phase and solidify close to equilibrium, while AgCu remains in a kinetically trapped state and solidifies in one step. An analytical model was used to rationalize these differences and analyze the size dependence of solidification temperatures.
Article
Chemistry, Analytical
Umit Divrikli, Funda Altun, Abdullah Akdogan, Mustafa Soylak, Latif Elci
Summary: A new microextraction method was developed and validated for the determination of cobalt and copper in environmental samples. The method showed good quantification limits and recovery rates, and has been successfully applied to real samples.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Mahdi Golsanamlou, Mahboob Nemati, Mohammad Reza Afshar Mogaddam, Mir Ali Farajzadeh
Summary: This study focuses on developing a sensitive, reliable, and efficient extraction procedure for detecting amphetamine and methamphetamine in adulterated creatine sports supplements.
ANALYTICAL METHODS
(2023)
Article
Geology
S. Horn, A. G. Gunn, E. Petavratzi, R. A. Shaw, P. Eilu, T. Tormanen, T. Bjerkgard, J. S. Sandstad, E. Jonsson, S. Kountourelis, F. Wall
Summary: The study examines the cobalt resources in Europe and reveals a wide distribution of various types of cobalt-bearing deposits across the continent. Current cobalt production in Europe is mainly concentrated in Finland, with three mines being the primary sources. The Fennoscandian Shield and the Caledonian Belt in Finland, Norway, and Sweden are high priority exploration areas for cobalt-bearing deposits.
ORE GEOLOGY REVIEWS
(2021)
Article
Biochemistry & Molecular Biology
Elzbieta Radzyminska-Lenarcik, Kamila Maslowska, Wlodzimierz Urbaniak
Summary: This study focuses on the use of 2-alkylimidazoles as ion carriers in polymer inclusion membranes for the separation of copper, zinc, cobalt, and nickel from aqueous solutions. By analyzing transport parameters and characterizing the membrane, the research provides valuable insights for metal ion separation technology.
Article
Chemistry, Multidisciplinary
Manohar Patil, Su Jeong Park, Gyu Seong Yeom, Ratnamala Bendre, Anil Kuwar, Satish Balasaheb Nimse
Summary: A Schiff base ligand FHE was synthesized and showed specific complex formation with Zn2+ ions, resulting in enhanced fluorescence. FHE demonstrated high sensitivity for detecting Zn2+ ions in living cells and environmental samples.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Salman S. Alharthi, Hamed. M. Al-Saidi
Summary: A simple semi-automated dispersive liquid-liquid microextraction system was developed for the preconcentration and determination of nickel (II) ion in food samples. The method showed good efficiency in sensitivity and selectivity, with a linear calibration plot and low detection limit. Additionally, the method was free of most potential interferences and was validated using ICP-MS with certified reference samples.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Environmental Sciences
Sengul Sanlier Ucak, Adnan Aydin
Summary: A novel adsorbent PPTU was successfully synthesized and its adsorption capabilities for several metal cations were investigated. The results showed that PPTU exhibited high adsorption capacity and preconcentration efficiency for Cu(II), Cd(II), Ni(II), Pb(II) and Fe(II), making it a promising candidate for trace analysis of target metal ions.
MARINE POLLUTION BULLETIN
(2022)
Article
Materials Science, Ceramics
Dariusz Kajewski, Irena Jankowska-Sumara, Jae-Hyeon Ko, Jeong W. Lee, Rafal Sitko, Andrzej Majchrowski, Annette Bussmann-Holder, Krystian Roleder
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2020)
Article
Physics, Condensed Matter
E. Malicka, M. Karolus, J. Panek, Z. Stoklosa, T. Gron, A. Gudwanski, B. Sawicki, J. Goraus
PHYSICA B-CONDENSED MATTER
(2020)
Article
Chemistry, Inorganic & Nuclear
Anna M. Maron, Katarzyna Choroba, Jan G. Malecki, Slawomir Kula, Ewa Malicka
Article
Chemistry, Physical
Tomasz Siudyga, Maciej Kapkowski, Dawid Janas, Tomasz Wasiak, Rafal Sitko, Maciej Zubko, Jacek Szade, Katarzyna Balin, Joanna Klimontko, Daniel Lach, Judyta Popiel, Adam Smolinski, Jaroslaw Polanski
Article
Chemistry, Analytical
Beata Zawisza, Rafal Sitko, Ignasi Queralt, Eva Margui, Anna Gagor
Article
Engineering, Chemical
Rafal Sitko, Marcin Musielak, Maciej Serda, Ewa Talik, Beata Zawisza, Anna Gagor, Malgorzata Malecka
Summary: A superior nanoadsorbent (GO-TSC) for highly effective removal of mercury ions from water solutions was developed by grafting thiosemicarbazide molecules onto graphene oxide nanosheets. The adsorption on GO-TSC is significant across a broad pH range, with a maximum adsorption capacity of 231 mg g(-1) at pH 3.5 and impressive selectivity towards Hg(II) ions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Spectroscopy
Marcin Musielak, Karina Kocot, Beata Zawisza, Ewa Talik, Eva Margui, Ignasi Queralt, Beata Walczak, Rafal Sitko
Summary: This study developed a method for the determination of ultratrace heavy metal ions by using a preconcentration method with GO/CNTs membranes and TXRF, achieving efficient sorption and detection of Co, Ni, Cu, Zn, Cd, and Pb ions. The method yielded high recoveries for all elements at pH 5, with minimal sample requirement and compliance with green analytical chemistry principles.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Green & Sustainable Science & Technology
Maciej Kapkowski, Tomasz Siudyga, Rafal Sitko, Anna Niemczyk-Wojdyla, Tomas Zelenka, Gabriela Zelenkova, Sylwia Golba, Adam Smolinski, Jaroslaw Polanski
Summary: Controlling carbon and nitrogen chemistry is crucial for human life. The removal of ecotoxic NOx from flue gases is important for electric power stations. Surface deposits can deactivate SCR systems, but innovative regeneration procedures have been developed to restore catalyst activity.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Archaeology
Rafal Warchulski, Krzysztof Kupczak, Aleksandra Gaweda, Rafal Sitko
Summary: This study provides a complete reconstruction of gold metallurgy in Zloty Stok, Poland, using the analysis of metallurgical slags. The results reveal important parameters of the process and correct existing descriptions of the smelting process.
Article
Energy & Fuels
Maciej Kapkowski, Tomasz Siudyga, Piotr Bartczak, Maciej Zubko, Rafal Sitko, Jacek Szade, Katarzyna Balin, Bartlomiej S. Witkowski, Monika Ozga, Rafal Pietruszka, Marek Godlewski, Jaroslaw Polanski
Summary: Energy consumption leads to environmental risks, particularly greenhouse gas emissions. Environmental catalysis plays a key role in reducing nitrogen oxides. This study explored the use of ceramic foams as catalyst supports for selective removal of nitrogen oxides. Results showed that ZnO performed better than TiO2, while SiC-supported catalysts were less efficient.
Article
Chemistry, Analytical
Beata Zawisza, Rafal Sitko, Anna Gagor
Summary: A novel solid-phase microextraction method using a nanocomposite material has been developed for the preconcentration and determination of ultra-trace gold ions and gold nanoparticles. The method offers high sorption capacity and accurate detection limits, while adhering to the principles of Green Chemistry by reducing the amount of sorbent and eliminating solvents. The method has been successfully applied to extract and determine ultra-trace gold in cosmetic products.
Article
Biochemistry & Molecular Biology
Daniel Lach, Blazej Tomiczek, Tomasz Siudyga, Maciej Kapkowski, Rafal Sitko, Joanna Klimontko, Sylwia Golba, Grzegorz Dercz, Krzysztof Matus, Wojciech Borek, Jaroslaw Polanski
Summary: The paper presents the development of spatially stable Ni-supported bimetallic catalysts for CO2 methanation. The catalysts consist of sintered nickel mesh or wool fibers and nanometal particles (Au, Pd, Re, or Ru). A scalable preparation method involving forming and sintering of the nickel wool or mesh, followed by impregnation with metal nanoparticles generated by a silica matrix digestion method, is proposed. The catalyst candidates are characterized by SEM, XRD, and EDXRF, and tested in a fixed-bed flow reactor. The Ru/Ni-wool combination exhibits the best performance, achieving nearly 100% conversion at 248 degrees C, with the reaction onset at 186 degrees C. Notably, under inductive heating, the catalyst shows the highest conversion at a lower temperature of 194 degrees C.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Analytical
Marcin Musielak, Maciej Serda, Ewa Talik, Anna Gagor, Julia Korzuch, Rafal Sitko
Summary: This study presents a fast and low-cost method for highly selective determination of ultratrace Hg(II) ions using CNT-TSC. Through DMSPE and TXRF analysis, the method achieves extremely low detection limits and efficient separation. The method also shows potential for effective removal of Hg(II) ions from aqueous solutions.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Katarzyna Choroba, Luis R. Raposo, Joanna Palion-Gazda, Ewa Malicka, Karol Erfurt, Barbara Machura, Alexandra R. Fernandes
DALTON TRANSACTIONS
(2020)
Article
Chemistry, Analytical
Gang Qu, Yuxin Zhao, Qiaoli Zhang, Jina Wu, Xiaosen Li, Yang Yang, Shilei Liu
Summary: In this study, magnetic mesoporous materials combined with real-time in situ mass spectrometry were used for the high-throughput detection of hydrolyzed products of organophosphorus nerve agents. The method showed good linearity, low limits of detection and quantification, and high extraction recoveries. The magnetic preparation method used was quick, cost-effective, rugged, and safe. The results demonstrated the potential of this method for rapid and efficient determination of the target analytes in environmental samples.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Anna Hildebrand, Mariam Merchant, Danny O'Hare
Summary: Substandard and falsified artemisinin derivatives in antimalarials have caused significant deaths and economic losses. This study evaluates the feasibility of voltammetric methods for identifying and quantifying artemether. The findings suggest that electrochemical analysis shows promise as a method for artemether identification and quantification.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Marx Osorio Araujo Pereira, Alvaro Ferreira Junior, Edson Silvio Batista Rodrigues, Helena Mulser, Giovanna Nascimento de Mello e Silva, Wallans Torres Pio dos Santos, Eric de Souza Gil
Summary: Brazilian spotted fever (BSF) is a serious and rapidly evolving disease. A new impedimetric immunosensor was developed for rapid diagnosis by measuring specific antibodies in plasma. The sensor demonstrated selectivity and accuracy, and has potential for important applications in diagnostic testing.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Kathrin Schilling, Ronald A. Glabonjat, Olgica Balac, Marta Galvez-Fernandez, Arce Domingo-Relloso, Vesna Slavkovich, Jeff Goldsmith, Miranda R. Jones, Tiffany R. Sanchez, Ana Navas-Acien
Summary: Analysis of trace elements in urine is an important tool for assessing exposures, diagnosing nutritional status, and guiding public health and healthcare intervention. This study provides a sensitive method for analyzing 18 elements in urine samples, using only 100 μL. The results show good accuracy and sensitivity of the method.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Mengya Li, Shijie Liu, Shiliang Guo, Dong Liang, Miaoyun Li, Yaodi Zhu, Lijun Zhao, Jong-Hoon Lee, Gaiming Zhao, Yangyang Ma, Yanxia Liu
Summary: In this study, a magnetic flow device was developed to purify spores in a culture medium system. The device used magnetic nanoparticles to absorb vegetative cells, separating them from the spores. The achieved purity of the collected spores was over 95%. The study also demonstrated a rapid quantitative detection method using Raman spectroscopy.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Wanqiong Liu, Zixuan Wu, Jianwei Peng, Zebin Xu, Yong Liang
Summary: Metal-organic frameworks (MOFs) are effective carriers for molecular imprinting, but their poor dispersibility in aqueous solution is a significant drawback. In this study, we have applied amphiphilic block copolymers and molecularly imprinted technology on MOFs to improve the hydrophilicity of molecularly imprinted fluorescent materials.
ANALYTICAL METHODS
(2024)