Article
Chemistry, Applied
Afang Zhu, Tianhui Jiao, Shujat Ali, Yi Xu, Qin Ouyang, Quansheng Chen
Summary: This article introduces a new method based on D-mu SPE technology for the extraction of aflatoxins (AFs) from food matrix before HPLC analysis, using fabricated ZnO nanoflowers and [HMIM][PF6]. The key parameters influencing the extraction efficiency were studied, and under optimal experimental conditions, the method showed excellent linearity with high correlation coefficients (≥0.994). LOD and LOQ were 0.034 and 0.114 μg/kg for AFB1, 0.024 and 0.082 μg/kg for AFB2, 0.067 and 0.226 μg/kg for AFG1, and 0.025 and 0.084 μg/kg for AFG2. The recovery of actual samples spiked with analytes (at 5, 15, and 20 μg/kg) ranged from 93.8% to 105.1%. Overall, an accurate AFs analysis method was developed and could be applied to the determination of AFs in various food and agricultural products.
Article
Chemistry, Applied
Vahid Ashouri, Kourosh Adib, Gilan Attaran Fariman, Mohammad Reza Ganjali, Mehdi Rahimi-Nasrabadi
Summary: The synthesis and application of task-specific ionic liquids as extracting solvents or chelating agents in dispersive liquid-liquid micro-extraction (DLLME) were evaluated. The method involved chelation of As(III) with an ammonium pyrrolidine dithiocarbamate (APDC) bonded ionic liquid followed by conversion to a hydrophobic ionic liquid and determination of As levels through ETAAS analysis. Under optimal conditions, linear dynamic ranges and low limits of detection were achieved for both As(III) and total As.
Article
Physics, Applied
S. Dyer, A. McWilliam, D. Hunter, S. Ingleby, D. P. Burt, O. Sharp, F. Mirando, P. F. Griffin, E. Riis, J. P. McGilligan
Summary: We demonstrate the controllable depletion of nitrogen buffer gas pressure in a micro-machined cesium vapor cell by dynamic heating of an alkali dispenser pill. The alkali pill dispenser reduces the nitrogen content from the vapor, allowing fine-tuning of the alkali to buffer gas pressure ratio. Real-time control of gas pressure ratio in the vapor cell has benefits for refining atomic sensor performance and achieving various target pressures across a wafer bonded with a uniform back-filled buffer gas pressure.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Analytical
Duygu Totur Pamik, Serap Seyhan Bozkurt, Taskin Mumeu
Summary: A simple, fast, sensitive, and environmentally friendly ultrasonic assisted-dispersive micro-solid phase extraction method was developed for the separation and trace analysis of sulfonamides. The method utilized chitosan-based sorbent and high-performance liquid chromatography with diode array detector for sulfonamide determination. Optimization of the extraction parameters was conducted, and the method showed wide linearity, low limit of detection, and low limit of quantification. The proposed method was successfully used for the extraction and analysis of sulfonamides in milk and egg samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Polymer Science
Vito Speranza, Sara Liparoti, Roberto Pantani, Giuseppe Titomanlio
Summary: Understanding the mechanisms that determine mechanical performances during micro-injection molding is crucial for meeting the demand for advanced plastic products. The ability to correctly predict morphology opens the possibility to forecast final part properties. The morphology of semi-crystalline polymers parts mainly consists of spherulites and fibrils, with the thermomechanical history experienced by polymer chains playing a key role.
Article
Chemistry, Applied
Shahnaz Teimoori, Hamid Shirkhanloo, Amir Hessam Hassani, Mostafa Panahi, Nabiollah Mansouri
Summary: An advanced synthesis method using phenylalanine and task-specific ionic liquid functionalized on multi-walled carbon nanotubes was employed to efficiently extract BTEX from milk and water samples. The extraction was performed using ultrasound-assisted dispersive homogenized-micro-solid phase extraction with extraction efficiencies ranging from 95.1% to 103.4%. The BTEX compounds were analyzed using gas chromatography with flame ionization detection, and the linear range, LOD, and LOQ for BTEX in milk and water samples were determined.
Article
Engineering, Multidisciplinary
Thi Phuong Thao Nguyen, Moon Hyeon Kim, Yoon Ku Kwon, Yong Seok Hong
Summary: Extensive modifications were made to a commercially-available cold-vapor atomic absorption mercury analyzer to enable fast and stable real-time Hg-0 detection under harsh conditions with additional HCl, NO, and NH3. The fully modified analyzer showed similar Hg-0 signals to those based on factory-certified permeation tubes. The oxidation activity of gaseous Hg-0 was found to be associated with the catalyst and influenced by the concentration of HCl in gas streams with NO and NH3.
Article
Chemistry, Analytical
Charikleia Tziasiou, Anastasia D. Pournara, Manolis J. Manos, Dimosthenis L. Giokas
Summary: This study reports the use of a thiol-functionalized Zr-metal organic framework (MOF-SH) for the extraction of noble metal nanoparticles from environmental water samples. The MOF-SH material has high adsorption capacity and short extraction time, and can effectively extract and discriminate gold nanoparticles and gold ions, with comparable detection limits and precision to other methods.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Abolghasem Zanganeh, Hamid Reza Ghasempour, Mohammad Kazem Koohi, Nasser Karimi
Summary: A novel functionalized magnetic metal-organic framework (MOF) was synthesized and applied for the extraction and determination of Hg(II) ions in food samples. The new material, modified with 1,3,4-Thiadiazole-2,5-dithiol chelator, exhibited high efficiency in separating and enriching Hg(II) ions. The optimized extraction conditions were determined using experimental design approach, and the elution step was performed using 0.7 mol L-1 HCl solution.
RESEARCH ON CHEMICAL INTERMEDIATES
(2023)
Review
Chemistry, Applied
Herbert Musarurwa, Nikita Tawanda Tavengwa
Summary: Deep eutectic solvents are versatile, green solvents that can be used in dispersive liquid-liquid micro-extraction techniques for pesticides. They have tunable properties and are more cost-effective, but also have some toxicity concerns.
Article
Chemistry, Analytical
Katarzyna Pytlakowska, Ewa Malicka, Ewa Talik, Anna Gagor
Summary: A selective method for determining mercury ions in various water samples was developed using nano-bismuth sulfide as a solid sorbent, ultrasound-assisted dispersive micro-solid phase extraction, and EDXRF technology. This method allows for highly sensitive detection of mercury ions at low concentrations, even in the presence of high concentrations of coexisting anions and cations typically found in surface waters.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Spectroscopy
Jie Yu, Lijuan Cui, Quanfang Lu, Juanlong Li, Yan Feng, Bo Wang, Xiaojuan Ma
Summary: A novel liquid anode glow discharge (LAGD) system was developed for highly sensitive detection of mercury in water and ore samples. The addition of methanol and formic acid enhanced the signal intensity of mercury and reduced interferences, resulting in a lower detection limit of 4.5 mu g L-1.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Chemistry, Analytical
Daisuke Kozaki, Masanobu Mori, Shinichi Hamasaki, Tomotaka Doi, Souma Tanihata, Atushi Yamamoto, Takeshi Takahashi, Koutarou Sakamoto, Shigeto Funado
Summary: A simple method using enclosed quartz cell and cold vapour-atomic absorption spectrometry is proposed for determining total inorganic mercury in solution, achieving similar precision to conventional methods while reducing sample volume, reductant, and cost.
ANALYTICAL METHODS
(2021)
Article
Chemistry, Physical
Ahmed Abdi Hassan, Abdulkadir Tanimu, Khalid Alhooshani
Summary: A simple, efficient, and sensitive method has been developed for the detection and preconcentration of pharmaceutical drug pollution in water bodies. The use of magnetic ionic liquids as sorbents in dispersive micro-solid phase extraction and high-performance liquid chromatography showed excellent performance.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Applied
Hamed Sahebi, Sayyed Massoud Bahrololoomi Fard, Farnaz Rahimi, Behrooz Jannat, Nafiseh Sadeghi
Summary: A methodology using functionalized magnetic nanoparticles as adsorbents was developed for efficient extraction of multiple metal ions from water and fruit juice samples. The method is rapid, sensitive, and environmentally friendly.
Article
Engineering, Environmental
Farnaz Tabarkhoon, Hossein Abolghasemi, Alimorad Rashidi, Mohammad Bazmi, Masood S. Alivand, Farnoush Tabarkhoon, Mehran Vashaghani Farahani, Mehdi D. Esrafili
Summary: We synthesized dual-pore carbon nitride materials with different ethylenediamine to carbon tetrachloride ratios and potassium hydroxide as a chemical activator, using nanosilica as a hard template to tune the properties of the materials. The prepared carbon nitride adsorbents had a large surface area, great pore volume, and high nitrogen content. They exhibited exceptional adsorption capacity for CO2 and H2S, high selectivity, and excellent cyclic stability. The results suggest that these materials have great potential for various applications in separation processes, catalysis, capacitors, and energy storage.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Davood Mohammady Maklavany, Zahra Rouzitalab, Ali Mohammad Amini, Mojtaba Askarieh, Pier Luigi Silvestrelli, Abdolvahab Seif, Yasin Orooji, Alimorad Rashidi
Summary: This article investigates the characteristics and effects of multi-heteroatoms doped porous carbons in CO2 adsorption applications. The introduction of heteroatoms provides more active sites and develops the porous structure of activated carbons, resulting in diverse CO2 capture performances. The P-doped activated carbon (PAC) with low phosphorus content exhibits high CO2 uptake and selectivity, prominent cyclic regeneration capacity, high turnover frequency (TOF), and turnover number (TON) for commercial scale as well as fast kinetic adsorption. The density functional theory (DFT) method is used to reveal the adsorption mechanisms and electronic properties of the systems.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Saeed Fakhraie, Hamid Reza Rajabi, Alimorad Rashidi
Summary: In this study, novel core-shell MOFs were designed to improve the selective separation of H2S and CO2. The MU nanocrystals exhibited high adsorption capacity and selectivity due to optimized pores diameter and additional open metal sites.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Saeed Hasannia, Mohammad Kazemeini, Abdolvahab Seif, Alimorad Rashidi
Summary: In this study, CoW/X materials were used as catalysts for the oxidative desulfurization (ODS) of DBT in a model fuel. The results showed that the CoW (15)/CNT catalyst achieved high desulfurization efficiency under milder operating conditions, outperforming a previously reported catalyst. Experimental and theoretical investigations were conducted to better understand the characteristics and reaction mechanisms of the catalyst.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Mohammad Reza Nazarpour Kalaei, Amir Heydarinasab, Alimorad Rashidi, Mahshad Alaei
Summary: This study synthesized Mxene and functionalized Mxene nanoparticles, and fabricated Mxene coated stainless steel meshes using dip-coating method to investigate their capability in oil-water emulsion separation. The Mxene fabricated mesh showed good resistance to corrosive solutions and high efficiency in harsh medium condition. Characterization tests confirmed the effectiveness of the Mxene coating and its application as a highly effective mesh for oil-water separation.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Environmental Sciences
Raziyeh Ahmadi, Omid Arjmand, Neda Haj Mohammad Hossein Tehrani, Atiyye Ghorbani, Alimorad Rashidi, Mehdi D. Esrafili, Hadi Hamyali
Summary: In this study, amine impregnated activated carbon was synthesized and used as an effective adsorbent for gasoline vapor uptake. The physiochemical characterization of the synthesized sorbents showed high surface area and unique micro-meso pore structure, which significantly influenced the gasoline sorption capacity. The prepared sorbents exhibited high durability and maintained a high uptake capacity after multiple cycles.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Chemistry, Applied
Hamid Shirkhanloo, Mohsen Habibnia, Alimorad Rashidi, Ali Faghihi Zarandi, Mostafa Dehghani Mobarake
Summary: A rapid and efficient method based on a novel nitrogen-doped porous graphene nanostructure (NDPG) was developed for the speciation of mercury in water and human blood samples. The cloud point assisted dispersive ionic liquid-micro solid-phase extraction method was used to separate mercury in samples, and the UV-microwave accessory was utilized to convert organic mercury to inorganic mercury for determination. Organic mercury content was calculated by subtracting inorganic and total mercury contents.
Article
Energy & Fuels
Amin Rezaei Namin, Mahyar Rajabi-Kochi, Alimorad Rashidi, Elham Yazdi, Mostafa Montazeri, Ali Asghar Gharesheikhlou
Summary: In the past decade, innovative additives have been introduced for enhanced oil recovery (EOR) processes to improve efficiency under challenging conditions. Nitrogen-doped graphene (NDG) has been utilized as a stable and efficient injection method. Treatments have been applied to enhance the stability and quality of the commonly used nitrogen-doped graphene aqueous solution, involving nano-structure modification and carrier fluid properties. The resulting NDG functionalization and structure enhancement have shown improved emulsion stability and solubility, making it a superior option for EOR process.
Article
Chemistry, Physical
Ashkan Maleki, Arash Mehdizad, Ebrahim Elyassi, Behnam Sedaee, Alimorad Rashidi, Akbar Cheshomi, Ziba Hosseini, Sajjad Gharechelou
Summary: Most of the oil reserves remain unrecovered, and there is a need for novel and more effective enhanced oil recovery methods. Water injection can be improved by adding polymers for mobility control. Nanoparticle and nanohybrid flooding methods using wettability alteration and IFT reduction mechanisms were studied in this research. Polyacrylamide-based nanohybrids of GO/PAM and CNT/PAM were synthesized and their performance in terms of wettability alteration, IFT reduction, and mobility control were evaluated.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Chemical
Sonia Mir, Abbas Naderifar, Alimorad Rashidi, Hossein Mahdavi, Mehdi D. Esrafili, Somayeh Gholipour, Mahir Gulen
Summary: Efforts are being made to improve the efficiency of water-oil separation by enhancing the performance of g-C3N4 with the help of Zn(OH)(2). This study investigates the effect of porosity and surface defects on the removal of oil from oil-water mixtures using g-C3N4/Zn(OH)(2) nanocomposites with varying amounts of Zn(OH)(2). The results highlight the significant impact of oxygen-containing groups in the nanocomposite on the wettability behavior and water-removing separation performance. The g-C3N4/Zn(OH)(2) coated mesh demonstrates potential as a material for water-oil separation due to its higher adsorption energy for water compared to oil molecules.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Maryam Soleymani, Ramin Karimzadeh, Alimorad Rashidi, Ali Eslamimanesh
Summary: The aim of this research is to evaluate the effects of various parameters on the synthesis of a Fe-Mo catalyst supported on mesoporous activated carbon. Mesoporous carbon was prepared from grape branches and oil palm trunks, and optimum values of activation time and drying period were determined. The synthesized catalyst with an efficient support exhibited higher sulfur conversion efficiency for heavy naphtha hydrodesulfurization compared to a catalyst with a commercial support.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Hosna Hosseinzadeh Beiragh, Mohammad SamipoorGiri, Alimorad Rashidi, Mohammad Reza Ghasemi, Saeed Pakseresht
Summary: In this study, zeolite-template carbons (ZTCs) were synthesized from acetylene using clinoptilolite as a template. The CO2 adsorption capacity and selectivity of the ZTCs were evaluated, and the optimal synthesis parameters were determined. The functionalized ZTCs showed increased CO2 adsorption capacity and higher CO2/CH4 selectivity, indicating their potential use in high-pressure CO2 separation.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Multidisciplinary Sciences
Soheila Sharafinia, Alimorad Rashidi, Behnam Babaei, Yasin Orooji
Summary: This study compared the differences in surface chemistry and adsorptive characteristics between coordinate organic polymer (Cop-150) and nanoporous carbon (NPC), and found that the new NPC can effectively remove phenolic pollutants. The experimental results showed that Cop-150 had an adsorption capacity of 50 mg/g under the conditions of pH 4.638, contact time of 19.695 min, temperature of 56.8°C, and initial phenol concentration of 6.902 mg/L, while NPC had an adsorption capacity of 500 mg/g under the conditions of pH 7.042, contact time of 15.738 min, temperature of 28.3°C, and initial phenol concentration of 49.252 mg/L.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Environmental
Neda Haj Mohammad Hossein Tehrani, Masood S. Alivand, Ali Kamali, Mehdi D. Esrafili, Marzieh Shafiei-Alavijeh, Raziyeh Ahmadi, Mohammad Samipoorgiri, Omid Tavakoli, Alimorad Rashidi
Summary: A novel seed-mediated synthesis strategy using a low-cost and heteroatom-rich carbon structure was used to prepare hierarchical micro-mesoporous MIL-101(Cr), which exhibited significantly enhanced adsorption efficiency for benzene and toluene due to its large surface area and high pore volume.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Temurali Kholmurodov, Arash Tajik, Abdolreza Farhadian, Oybek Mirzayev, Pooya Tahay, Alexey V. Vakhin, Alimorad Rashidi
Summary: This study aims to fill the research gap of using aromatic ligands in catalyst synthesis for catalytic aquathermolysis of heavy oil. The developed oil-soluble catalyst (Ni-OSC) using catechol as a novel ligand effectively interacts with heavy oil fractions, reducing the content of resin and asphaltene and increasing the amounts of saturated and aromatic hydrocarbons. GC-MS analysis revealed an increase in low molecular weight hydrocarbons and a higher concentration of alkanes and aromatic hydrocarbons in the presence of Ni-OSC, improving the quality and recovery of heavy oil.
Article
Chemistry, Analytical
Michel Rocha Baqueta, Augusto Cesar Costa-Santos, Ana Paula Rebellato, Gisele Marcondes Luz, Juliana Azevedo Lima Pallone, Federico Marini, Alexsandro Lara Teixeira, Douglas N. Rutledge, Patricia Valderrama
Summary: This study reports the essential element composition of new Brazilian Canephora coffees and applies chemometric tools for analysis. The results demonstrate the suitability of this method for origin and species discrimination based on the inorganic fraction of coffee.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Mengjie Li, Jiapeng Wang, You Zhou, Yang Chen, Lingying Xia
Summary: A novel photoelectrochemical biosensor based on gold nanoparticles and specific structures was developed for highly sensitive detection of mercury ion. The multiple sandwich structures hindered electron supply and light harvesting, resulting in a weakened PEC signal, while the specific structures extinguished the PEC signal, enabling quantitative detection of Hg2+. The sensor exhibited high selectivity and stability, with potential applications in environmental detection, biological analysis, and medical research.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Mohamed A. Korany, Rasha M. Youssef, Marwa A. A. Ragab, Mostafa A. Afify
Summary: A stability-indicating fit-for-purpose method was developed for the determination of HC, TL, and PS in syrup dosage form. The method successfully separated CL from THY and quantified the analytes using HPLC-DAD. The robustness of the method was assessed through statistical analysis and self-validation.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Lingling Lin, Minyu Li, Ping Li, Chenqing Ye, Huanglong Zhuang, Shaohuang Weng, Feng Chen
Summary: This study developed a highly sensitive and selective electrochemical sensor for simultaneous detection of dopamine and uric acid. The sensor exhibited excellent anti-interference and stability, and could accurately measure dopamine and uric acid in human urine samples.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Peifang Chen, Caiyun Jiang, Zhouping Wang, Hong-zhen Lian, Xiaoyuan Ma
Summary: In this study, a high-performance SERS-active aptasensor was successfully developed for the quantitative analysis of AFB1 in cereal grains, which is of great significance in the field of food safety.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
E. Abas, C. Marina-Montes, C. Perez-Marin, J. Puimedon, J. Anzano
Summary: This study conducted a comprehensive measurement of natural and anthropogenic radionuclides in soil, water, and air in different locations around Deception Island in Antarctica. The results revealed significant levels of 210Pb and anthropogenic 137Cs in soil samples near old human settlements and facilities, as well as detectable levels of 137Cs and 60Co in water samples from old hunting areas. The findings also suggested potential resuspension processes based on higher-than-expected air quality results.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Joao Franciso Allochio, Nayara A. dos Santos, Nathalia dos S. Conceicao, Clara S. D. Baptista, Keyller B. Borges, Valdemar Lacerda Jr, Wanderson Roma
Summary: This study developed a fiber spray ionization mass spectrometry (FSI-MS) method, which shows great potential in detecting illicit drugs. Compared with paper spray ionization mass spectrometry (PSI-MS), FSI-MS demonstrates higher sensitivity in COC detection.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Dina A. Ahmed, Ola G. Hussein, Mamdouh R. Rezk, Mohamed Abdelkawy, Yasmin Rostom
Summary: The main goal of this study was to develop two green chromatographic techniques, HPLC and TLC, for the determination of alcaftadine (ALF) in pharmaceutical formulation and biological samples. The developed HPLC technique showed high efficiency and minimal environmental impact, successfully identifying ALF in the presence of its degradate. The TLC method provided a stability indicating study for ALF and was determined to be safe, green, and eco-friendly.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Abdullah Taner Bisgin
Summary: A green, speedy, and handy method for separation and determination of four commonly used food colorants was established using vortex assisted sequential-simultaneous liquid phase micro-extraction (VA-SS-LPME). The method does not require any instrumental chromatographic techniques. The procedure includes sequential separation steps using different extractants and simultaneous UV-vis spectrophotometric determination steps. The method is environmentally friendly and applicable for determination of colorants in food and pharmaceuticals.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Yifan Zhang, Tong Zhang, Wenjing Ba, Li Liu, Yuan Rao, Xiaodan Zhang, Hanhan Zhang, Xiu Jin
Summary: This paper proposes a novel spectral transfer modelling method based on neural network architecture searching for the asymptomatic prediction of Akizuki pear cork spot disorder. The experiments show that the model by this method is more effective, achieving an accuracy of 82.61%.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Krzysztof Greda, Maja Welna, Anna Szymczycha-Madeja, Pawel Pohl
Summary: For the first time, a dispersive micro-solid phase extraction (D-mu SPE) based on graphene oxide was used for the ultrasensitive determination of Cd. With this method, Cd can be efficiently extracted from a mixture of alkali and alkaline earth metals without the need for an elution step. The combination of D-mu SPE and SAGD OES significantly reduces matrix effects and improves the tolerance of Cd to alkali metals. The method shows simplicity in the measurement system and the commercially available nanosorbent used.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
P. K. Fathima Anjila, G. R. Tharani, Anand Sundaramoorthy, Venkat Kumar Shanmugam, Karthikeyan Subramani, Shanmugavel Chinnathambi, Ganesh N. Pandian, Vimala Raghavan, Andrews Nirmala Grace, Singaravelu Ganesan, Mangaiyarkarasi Rajendiran
Summary: This work proposes a rapid and sensitive spectroscopic method for detecting melamine in food products using rare-earth Terbium-doped Graphene Quantum Dots (Tb-GQDs) synthesized by microwave and simple chemical conjugation methods. The synthesized Tb-GQDs show a spherical shape with a size of approximately 6 nm and a quantum yield of 52%. The maximum detection limit for melamine concentration in milk and milk products is found to be 0.31 μM. The dual emitting Tb-GQDs provide a sensitive and effective platform for real-time detection of melamine in food samples, particularly in milk, and show promising potential in the food industry.
MICROCHEMICAL JOURNAL
(2024)
Review
Chemistry, Analytical
Piyush Dey, Mandeep Kaur, Akhil Khajuria, Dilmeet Kaur, Manpreet Singh, Hema Kumari Alajangi, Neha Singla, Gurpal Singh, Ravi Pratap Barnwal
Summary: Environmental issues, such as the uncontrolled release of dangerous pollutants, have significant impacts on human health. Traditional methods for detecting pollutants require specialized personnel and equipment, but nanotechnology has improved the performance of biosensors. This article discusses the use of nanotechnology in pollutant detection and the associated techniques.
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Sa Dong, Qiuyun Shi, Lingjun Guan, Yulong Wang, Pengyan Liu, Cunzheng Zhang, Jianguo Feng
Summary: In this study, a highly sensitive indirect competitive chemiluminescence enzyme immunoassay (icCLEIA) method was developed for the determination of sodium pentachlorophenolate (PCP-Na) and its metabolite pentachlorophenol (PCP). The method showed high specificity and affinity with a detection limit of 0.0032 ng/mL for PCP-Na and 0.0192 ng/mL for PCP. The method had no cross reaction with other chlorophenols compounds except for PCP. The average recoveries in chicken, pork and fish samples were 81.3-105.8% with low coefficient of variation (CV).
MICROCHEMICAL JOURNAL
(2024)
Article
Chemistry, Analytical
Palaniappan Ilayaraja, Murugan Manivannan, Paramasivam Parthiban
Summary: Nirmatrelvir, an antiviral drug used for the treatment of COVID-19, has been recommended by the World Health Organization. We developed an optimized analytical method for the quantification of Nirmatrelvir and its products, with high sensitivity and a wide linear range. The method also meets the requirements for greenness evaluation.
MICROCHEMICAL JOURNAL
(2024)
