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
Chemistry, Applied
Ali Sahragard, Waleed Alahmad, Pakorn Varanusupakul
Summary: This study developed an electrocolorimetric extraction technique for the simultaneous preconcentration and determination of Ni(II) in chocolate samples. The method showed a good linear range, low detection limit, and good stability and precision.
Article
Multidisciplinary Sciences
Adil Elik, Mustafa Tuzen, Baki Hazer, Savas Kaya, K. P. Katin, Nail Altunay
Summary: In this study, a novel amphiphilic copolymer PMaema was synthesized and applied for separation, preconcentration, and determination of trace As(III) ions in foods and waters. The method showed a high linear calibration curve and recovery rate, indicating its potential for practical sample analysis.
SCIENTIFIC REPORTS
(2021)
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
Chemistry, Multidisciplinary
Hany M. Youssef
Summary: In this study, an organic chelating agent was synthesized through mechanochemical ball milling and successfully applied for the flotation, preconcentration, and spectrophotometric measurement of nickel ions in aqueous solutions. The results showed that nickel ions and the organic chelating agent were successfully separated after 5 minutes of shaking at 25°C and pH 5. The stoichiometric ratio of the generated complex was determined to be M:L=1:2, with a formation constant of 2.25 x 104. The analytical characteristics of the method, including limit of detection, limit of quantification, and range of linearity, were evaluated and found to be 0.22 ng/mL, 0.74 ng/mL, and 5-400 ng/mL, respectively.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Analytical
Kondakamarla Imran, Dheeraj Pandey, Jasleen Kaur, Saba Naqvi, Abha Sharma
Summary: Copper is an essential transition metal in the body, but its imbalance can lead to neurological disorders. To solve this problem, a quinoline-based fluorescent probe was designed for rapid and selective detection of copper ions. The probe showed high selectivity for copper(ii) and had a detection limit lower than the tolerable level in drinking water. Its application in real-time detection of aqueous samples was also demonstrated using portable paper strips.
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
Chemistry, Analytical
Asmaa Kamal El-Deen, Chaudhery Mustansar Hussain
Summary: Magnetic nanoparticles (MNPs) play a significant role in various sectors, including analytical chemistry, due to their unique properties. They have outstanding performance in extracting and enriching target analytes, making them suitable for a wide range of applications. However, efforts are needed to reduce the toxicity of MNPs and explore green production methods. This review focuses on studies that discuss strategies for synthesizing green MNPs and presents their recent applications in environmental contaminant analysis. Potential challenges and future perspectives are also addressed.
TRENDS IN ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Samaneh Ahmadi-Asoori, Elham Tazikeh-Lemeski, Ali Mirabi, Esmaeil Babanezhad, Mohammad Habibi Juybari
Summary: A highly efficient natural adsorbent was prepared by modifying cellulose nanofibers to preconcentrate and clarify trace amounts of Mn (II) ions. The optimized technique showed low detection limit and high precision for effective detection of low concentrations of Mn (II) ions at the ng mL(-1) level.
MICROCHEMICAL JOURNAL
(2021)
Article
Agricultural Engineering
Basir Maleki, Bhaskar Singh, Hossein Eamaeili, Yatish Kalanakoppal Venkatesh, S. Siamak Ashraf Talesh, Sathyanarayanan Seetharaman
Summary: A novel and cheap catalyst, Walnut shell/sawdust catalyst, was synthesized using agricultural wastes and utilized for the production of biodiesel from waste cooking oils. Optimal conditions were determined using experiments and models, resulting in maximum biodiesel yield. The catalyst showed good recyclability and the transesterification process was found to be endothermic and non-spontaneous. The produced biodiesel met the ASTM D6751 standard, demonstrating the cost-effectiveness and potential of this oil-recycling approach.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Environmental Sciences
Rauf Foroutan, Seyed Jamaleddin Peighambardoust, Reza Mohammadi, Seyed Hadi Peighambardoust, Bahman Ramavandi
Summary: The aim of this study was to develop a new magnetic nanocomposite for removing Cu (II) from groundwater using walnut shell ash (WSA)/starch/Fe3O4. The nanocomposite was successfully synthesized and showed a high specific active surface area. The Cu adsorption followed the Freundlich and Langmuir models, and the process was spontaneous and exothermic. Kinetic adsorption data fitted the pseudo-second order model.
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
Multidisciplinary Sciences
Mutairah S. Al Shammari, Hussein M. Ahmed, Fatehy M. Abdel-Haleem, Nowarah J. Almutlq, Mohamed A. El-Khateeb
Summary: This study developed an environmentally friendly and simple green synthesis method to successfully synthesize iron nanoparticles (Fe-NPs), and evaluated their effectiveness as adsorbents for removing heavy metal ions from aqueous solutions. The synthesized Fe-NPs exhibited specific adsorption peaks and superparamagnetic behavior, with the -OH functional groups playing a crucial role in metal ion removal.
Article
Engineering, Chemical
Mansoor Khan, Shaista Naseer, Muslim Khan, Rugia Nazir, Amir Badshah, Adnan, Shaukat Shujah, Asia Parveen
Summary: The study successfully synthesized magnetic nanoparticles (MNPs) impregnated walnut shell powder (MNPs-WSP) for the solid-phase extraction of Cd(II) from environmental water samples. The method showed satisfactory recovery results for Cd(II) in different types of water samples.
DESALINATION AND WATER TREATMENT
(2021)
Article
Chemistry, Multidisciplinary
Ahmed Shahat, Nuha Y. Elamin, Wesam Abd El-Fattah
Summary: Chemical sensors based on mesoporous silica nanotubes are developed for quick detection of Fe(III) ions, with color changes indicating the presence of the ions. The sensors have a fast response time and high sensitivity, making them suitable for various real sample applications.
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)