Article
Chemistry, Analytical
Ignacio Lopez-Garcia, Maria J. Munoz-Sandoval, Manuel Hernandez-Cordoba
Summary: A magnetic dispersive micro-solid phase extraction method for determining thallium content in water is introduced, which allows the complete retention of both thallium(I) and thallium(III) through a series of steps. The method has a high enrichment factor and low detection limit, and its reliability is confirmed through the analysis of certified reference samples.
Article
Chemistry, Analytical
Siyu Gu, Xudong Huang, Mingli Chen, Jixin Liu, Xuefei Mao, Xing Na, Guoying Chen, Yunbin Shao
Summary: A novel IDBD reactor coupled with ETV was established for arsenic determination, investigating the evolution mechanisms of arsenic species using XPS. DBDA atomizes arsenic nanoparticles while DBDT traps and releases arsenic oxides, enhancing sensitivity and precision in seafood sample analysis. The method shows potential for rapid arsenic analysis based on direct solid sampling ETV instrumentation.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Yujia Deng, Kai Li, Xiandeng Hou, Xiaoming Jiang
Summary: The developed method utilizes a miniaturized dielectric barrier discharge microplasma atomic emission spectrometer coupled with a tungsten coil (W-coil) for on-line hydride generation trapping-electrothermal vaporization, resulting in fast, low-cost, and sensitive determination of trace cadmium. By adopting a horizontally fixed W-coil and flow injection mode, the total sample throughput can be greatly improved.
Article
Polymer Science
Adel Yavarinasab, Mostafa Abedini, Hamed Tahmooressi, Sajjad Janfaza, Nishat Tasnim, Mina Hoorfar
Summary: This study analyzed the application of potentiodynamic electrochemical impedance spectroscopy (PDEIS) for the selective in situ recognition of biological trace elements. An electrochemical sensor was developed using electropolymerization of aniline (Ani) on the surface of homemade pencil graphite electrodes (PGE). The results showed the potential of PDEIS as a complementary tool for metallic ion sensing.
Article
Chemistry, Physical
Thomas Vielhaber, Christian Heizinger, Christoph Topf
Summary: This study reports a simple catalytic method for the hydrogenation of quinolines using a tungsten precursor. The method is operationally simple and avoids the use of expensive and oxygen-sensitive phosphine ligands and auxiliary hydride reagents.
JOURNAL OF CATALYSIS
(2021)
Article
Spectroscopy
N. S. Medvedev, A. V. Volzhenin, A. Saprykin
Summary: A new method using mass spectrometry with inductively coupled plasma (ICP-MS) and electrothermal vaporization (ETV) was proposed for the analysis of high-purity molybdenum. The method allowed to determine the concentrations of 28 trace elements in high-purity molybdenum with a purity of 6N (99.9999% wt.) and provided LODs from 0.3 to 200 ng g(-1). Validation of the method was performed by spike experiments, and the results were compared with other analytical techniques.
ATOMIC SPECTROSCOPY
(2021)
Article
Chemistry, Analytical
Mahyar Shakerian, Mohammad Gheibi, Mohammad Eftekhari
Summary: The study employed vortex-assisted dispersive solid-phase extraction technique combined with graphene oxide-modified polyvinylpyrrolidone nanocomposite for preconcentration of ultra-trace levels of total thallium, followed by electrothermal atomic absorption spectrometry analysis. The results demonstrated that the method is efficient, with a wide linear range and low detection limit. Additionally, soft computing methods such as random tree (RT) and artificial neural network (ANN) showed acceptable accuracy for predicting the extraction recovery of Tl (III).
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Brian Topper, Nagia. S. S. Tagiara, Dimitrios Palles, Felix Lind, Mourad Baazouzi, Mohamed Toufik Soltani, Lothar Wondraczek, Doris Moncke, Efstratios. I. I. Kamitsos
Summary: Electrothermal poling effectively induces second-order nonlinear effects in heavy-metal oxide antimonite glasses. The study reveals that the poling-induced second-harmonic generation intensity is influenced by the alkali type. X-ray photoelectron spectroscopy and spectroscopy analysis confirm the presence of different molecular units in the glass network. Raman spectroscopy line scans track structural changes on the anode side of poled glasses and show an increase in partially polymerized tungstate units.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Energy & Fuels
Ines Escher, Yuliia Kravets, Guillermo A. Ferrero, Mustafa Goktas, Philipp Adelhelm
Summary: The study investigates two strategies to mitigate electrode expansion during the electrochemical intercalation/deintercalation of solvated sodium ions into graphite. Replacing PVDF binder with CMC binder reduces initial sodiation expansion, while adding ethylenediamine (EN) as a co-solvent significantly decreases both initial sodiation expansion and cycling breathing of the electrode.
Article
Chemistry, Applied
Shizhong Chen, Juntao Yan, Chunlei Wang, Chenghao Zhang, Dengbo Lu
Summary: A two-step direct immersion single-drop microextraction (TS-DI-SDME) procedure was developed for the separation and enrichment of Tl(III) and Tl(I) before graphite furnace atomic absorption spectrometry detection. Tl(III) formed complexes and was extracted into one organic drop, while Tl(I) remained in the solution. The method demonstrated satisfactory detection limits, repeatability, and reproducibility, and was successfully applied to food sample analysis.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2023)
Article
Chemistry, Analytical
Patricia Maung, Diane Beauchemin
Summary: The study investigated the effect of adding H-2 to the carrier gas on the detection of fluorine in solid samples for the first time, showing significant improvements in sensitivity and limit of detection for F. The accuracy of the method was verified through external calibration and internal standardization techniques.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Energy & Fuels
Omar K. Bingah, Mark D. Pritzker
Summary: This study investigated the electrochemical activity of polyacrylonitrile-based graphite felt containing tungsten oxide and/or tin oxide nanocatalysts in the Ce(III)/Ce(IV) redox reaction. The combination of WO3 and SnO2 catalysts showed superior catalytic activity compared to single oxide catalysts, promoting electrolyte accessibility and improving electrode hydrophilicity. SEM images indicated a more homogeneous dispersion and prevention of oxide particle clustering with the WO3-SnO2 mixture, leading to enhanced performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Yeon-hee Kim, Wook-jin Ra, Solyi Cho, Shinai Choi, Bokyung Soh, Yongsung Joo, Kwang-Won Lee
Summary: This study validated an analytical method for determining thallium in foods by ICP-MS, and found that thallium levels in most foods in the South Korean market were below the health guidance level.
Article
Chemistry, Analytical
Xing Liu, Guo Cheng, Chun Yang, Hong-Tao Zheng, Sheng-Hong Hu, Zhen-Li Zhu
Summary: A novel electrothermal desolvation-enhanced dielectric barrier discharge plasma-induced vapor generation (ETD-DBD-PIVG) method has been developed for sensitive determination of Sb. The method offers advantages such as simplified sample pretreatment steps and sensitivity for volume-limited sample analysis.
ANALYTICAL CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Ying Chu, Peng Wang, Yihong Ding, Jie Lin, Xinxin Zhu, Shiqiang Zhao, Huile Jin, Tianbiao Zeng
Summary: In this study, Sb/Fe2S3 nanocomposites were fabricated and used as anode materials for sodium-ion batteries. The Sb/Fe2S3-15% composite exhibited high reversible capacities at different current rates, outperforming most Sb-based anodes. The reversible behavior of Fe2S3 and Sb phases during charge/discharge cycling was demonstrated, and the presence of exfoliated graphite facilitated Na+ diffusion and e(-) conduction. The proposed synthesis method has potential for the fabrication of various antimony/transition metal sulfide heterostructures (Sb/M1-x S) for a wide range of applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Esmat Shojaei, Mahboubeh Masrournia, Ali Beyramabadi, Hossein Behmadi
Summary: In this study, a new and cheap potentiometric sensor was developed for the measurement of lanthanum ion in water samples. The sensor showed high accuracy and sensitivity, which was validated by theoretical calculations and experimental results. The optimization of electrode components using experimental design reduced the cost and time of electrode optimization. The application of the sensor to real samples demonstrated its effectiveness in determining lanthanum ion with high recovery rate.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Shirin Shahraki, Mahboubeh Masrournia, Hassan Karimi-Maleh
Summary: In this study, a highly sensitive electrochemical sensor was designed and fabricated for the determination of epinine. MgO/SWCNTs/BMMS/CPE was used as a sensor, which showed a linear dynamic range of 5.0 nM-250 mu M for epinine determination.
CURRENT ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Mahnaz Sanati, Mahboubeh Masrournia, Hossein Behmadi, Ali Beyramabadi
Summary: Arsenic is a widely used element with high toxicity. This study introduced a potentiometric sensor using a carbon paste electrode for determining dihydrogen arsenite ions in environmental samples. The sensor showed high selectivity, sensitivity, and accuracy, making it suitable for various environmental samples.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Biotechnology & Applied Microbiology
Zahra Barati, Mahboubeh Masrournia, Zarrin Es'haghi, Moslem Jahani, Javad Ebrahimi
Summary: In this study, a novel carbon-paste electrochemical sensor was prepared for the detection of chromium (III). The sensor showed good selectivity and a low detection limit, while offering the advantages of simplicity, speed, and low cost.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Fateme Fallah Tafti, Mahboobeh Masrournia
Summary: This study developed a surfactant-assisted dispersive micro-solid-phase extraction method combined with a chemical hydride generation strategy for the determination of arsenic (III) species. The method successfully extracted and preconcentrated arsenic (III) species from environmental, biological, and fruit samples. The use of hexadecyltrimethylammonium bromide as the dispersion agent yielded the best results. By optimizing experimental conditions, a linear range and determination coefficient were obtained. The proposed method demonstrated low detection limits, high enrichment factors, and good repeatability and applicability for arsenic (III) determination.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2022)
Article
Polymer Science
Alieh Rezagholizade-shirvan, Mahboubeh Masrournia, Mohsen Fathi Najafi, Hossein Behmadi
Summary: In this study, chitosan-based nanocarrier agents were successfully synthesized and loaded with curcumin. The nanocarriers were characterized using various analytical techniques and their antioxidant and metal ion removal properties were investigated. The results demonstrated that the nanocarriers are suitable for drug delivery systems and exhibit excellent antioxidant and metal ion removal capabilities.
Article
Chemistry, Multidisciplinary
Mahnaz Sanati, Mahboubeh Masrournia, Hossein Behmadi, Ali Beyramabadi
Summary: A potentiometric sensor was developed to measure Bi(III) ions in real water and pharmacological samples. The sensor showed excellent selectivity and sensitivity towards Bi(III) ions, with a suitable linear range and fast response time.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Inorganic & Nuclear
Alieh Rezagholizade-shirvan, Mohsen Fathi Najafi, Hossein Behmadi, Mahboubeh Masrournia
Summary: Curcumin-loaded nanocomposites showed higher stability, slower release rate, and greater antibacterial, antioxidant, and anti-inflammatory activity compared to free Curcumin. Specific nanocomposites exhibited significant toxicity to cancer cells and demonstrated a greater anti-cancer effect. The simultaneous use of three biopolymers enhanced the therapeutic efficacy of Curcumin.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Faezeh Rezaei, Mahboubeh Masrournia, Mehdi Pordel
Summary: A sensitive determination procedure for two anticancer drugs (tamoxifen and raloxifene) in real water and biological samples was developed based on magnetic dispersive micro solid-phase extraction-high-performance liquid chromatography. The method showed wide linear ranges, low detection limits, and low relative standard deviations, making it suitable for the analysis of these drugs in water and biological samples.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Aysir Alhmaunde, Mahboubeh Masrournia, Ali Javid
Summary: An efficient and facile sample preparation method based on dispersive micro solid-phase extraction was developed for extracting benzodiazepines in real water samples. A core-shell MOFs sorbent was synthesized and magnetized with Fe3O4 nanoparticles. The method showed good linearity, low detection limits, and demonstrated excellent analytical capability for environmental water samples.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Faezeh Rezaei, Mahboubeh Masrournia, Mehdi Pordel
Summary: A dispersive micro solid phase extraction method was developed to determine aflatoxins in water and rice samples. The method utilized amine-functionalized Cu/Ni bimetallic-MOF as the sorbent, and the sorbent was magnetized using Fe3O4 nanoparticles. The method showed good linearity, low detection limits, and good repeatability for the determination of aflatoxins.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Bahareh Sefati, Mahboubeh Masrournia, Hamed Reza Beheshti, Javad Feizy
Summary: A magnetic dispersive solid-phase microextraction method coupled with gas chromatography/mass spectroscopy was developed to measure three organophosphorus pesticides (OPPs) in fruit and cereal samples. The method utilized magnetic Fe3O4@ reduced graphene oxide nanocomposites as the sorbent and optimized nine factors using experimental design. The method showed linear calibration curves and high preconcentration factors, low sample solution consumption, and fast extraction time. It was suitable for OPPs determination with good recovery percentages and low relative standard deviations in complex matrices.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Mojgan Ojaghzadeh Khalil Abad, Mahboubeh Masrournia, Ali Javid
Summary: A dispersive micro solid phase extraction method based on a novel and green sorbent was developed to extract paclitaxel and vinorelbine from environmental water and urine samples. The synthesized composite sorbent, MIL-88B@MIL-88A@chitosan, showed higher analyte recoveries compared to the individual sorbent components. The method demonstrated good linearity, low detection limits, and satisfactory precision for the determination of the target analytes.
MICROCHEMICAL JOURNAL
(2023)
Article
Electrochemistry
Mahnaz Sanati, Marjan Shahinfar, Mahboubeh Masrournia, Hossein Behmadi
Summary: A potentiometric sensor based on a carbon paste electrode was developed for determining manganese (II) ions in environmental water and biological samples. The sensor utilized a synthetic ligand called BBP as an ionophore and optimized the components of the electrode. The sensor exhibited a wide pH range, fast response time, long lifetime, and high selectivity for Mn2+ ion measurement without interference from other ions.
ANALYTICAL & BIOANALYTICAL ELECTROCHEMISTRY
(2023)
Article
Chemistry, Analytical
Aysir Alhmaunde, Mahboubeh Masrournia, Ali Javid
Summary: A dispersive micro solid phase extraction method was developed to extract three antidepressant drugs from water and biological samples. The method was optimized using experimental design, and showed high recovery and applicability.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Michelle Buoso, Beatrice Campanella, Massimo Onor, Emanuela Pitzalis, Alessandro D'Ulivo
Summary: The use of BH intermediates as derivatization reagents significantly improves the tolerance to interference from transition metal ions in the generation of SbH3 and BiH3, and shows high tolerance in a wide range of acidity. The method has been successfully applied to the determination of Sb and Bi in complex samples, providing further understanding of the chemical behavior of borohydrides.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2024)
Article
Chemistry, Analytical
Chao-Feng Li, Xuan-Ce Wang, Zhu-Yin Chu, Peng Peng
Summary: Thermal ionization mass spectrometry (TIMS) is the standard method for obtaining precise Sr-87/Sr-86 isotopic ratios. However, our developed hydrofluoric acid coprecipitation method offers a low-cost, rapid, simple, and high-throughput alternative for analyzing red wine samples, effectively eliminating isobaric interference and matrix element inhibition.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2024)
Article
Chemistry, Analytical
Ivan B. Krstic, Bratislav M. Obradovic, Milorad M. Kuraica
Summary: This paper presents the spatio-temporal dynamics of a Grimm-type microsecond pulsed glow discharge (mu PGD) in argon at 6 mbar. The occurrence of a high current peak during the discharge ignition is analyzed and the importance of displacement current is emphasized. The development of electron excitation temperature for argon atoms and ions at various distances from the cathode is measured. The spatio-temporal evolution of selected spectral lines of argon and copper atoms and ions is analyzed during different phases of the discharge. The results suggest that the behavior of spectral line emissions differs between the pre-peak and afterglow periods, with different lines reaching maximum intensity during these phases. The appearance time and decay time of the afterpeak are shorter for ions than for atoms. These findings are explained in terms of three-body recombination processes and ion mobilities.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2024)
Article
Chemistry, Analytical
Qiuyun Wang, Anmin Chen, Xun Gao
Summary: In this paper, the combination of Tesla coil discharge (TCD) and laser-induced breakdown spectroscopy (LIBS) was used to enhance the emission of Al atomic lines and AlO molecular bands. The optimized distance between the TCD tip and the sample surface was found to be 5 mm, and the optimal laser energy was 25.1 mJ. Furthermore, TCD-SELIBS showed lower limits of detection (LoDs) for Cr and Pb elements compared to surface enhanced LIBS (SELIBS). The combination of TCD and LIBS is a promising technology for high-sensitivity analysis of heavy metals in water, with the advantages of simplicity, low cost, ease of operation, industrialization, and commercialization.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2024)
Article
Chemistry, Analytical
Yanwen Tang, Tingguang Lan, Jianfeng Gao, Zhongjie Bai, Xiaowen Huang, Junjie Han, Na Liu
Summary: Titanium is an important metal widely used in various industries. Ilmenite minerals are the main source of titanium metal and can be found in igneous and metamorphic rocks as well as different types of deposits. To accurately determine U-Pb ages of ilmenite, a new calibration method and appropriate reference materials are urgently needed. Laser ablation sector field inductively coupled plasma mass spectrometry has been used to minimize matrix effects and zircon 91500 has been identified as a suitable reference material for measuring the Pb/U ratio in ilmenite. The direct calibration method using zircon 91500 as an external standard has been found to be effective for in situ U-Pb dating of ilmenite samples under different ablation settings.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2024)