Article
Chemistry, Analytical
Abolghasem Jouyban, Mahboob Nemati, Mir Ali Farazajdeh, Ali Akbar Alizadeh Nabil, Mohammad Reza Afshar Mogaddam
Summary: A new and efficient extraction procedure was proposed for the simultaneous extraction of four hydroxylated metabolites polycyclic aromatic hydrocarbons from urine samples. The method showed wide linear ranges, low limits of detection and quantification, satisfactory enrichment factors and extraction recoveries, and acceptable relative standard deviations after optimization and validation according to International Council Harmonization guidelines. The introduced method was successfully applied for determination of the analytes in urine samples obtained from tobacco smokers.
JOURNAL OF SEPARATION SCIENCE
(2021)
Article
Chemistry, Analytical
Mir Ali Farajzadeh, Somayeh Pasandi, Ali Mohebbi, Mohammad Reza Afshar Mogaddam
Summary: In this work, iron (III) oxinate magnetic nanocomposite was synthesized and used for the magnetic dispersive solid-phase extraction of polycyclic aromatic hydrocarbons from honey samples. The prepared sorbent was successfully characterized. Under the optimized conditions, the method showed good repeatability, acceptable extraction recoveries, high enrichment factors, and low limits of detection and quantification.
JOURNAL OF SEPARATION SCIENCE
(2022)
Article
Chemistry, Analytical
Pelin Erdem, Aylin Altinisik Tagac, Serap Seyhan Bozkurt, Melek Merdivan
Summary: In this study, a novel SPME fiber was prepared for the extraction and analysis of polycyclic aromatic hydrocarbons. The MMT/CH/O-DIL fiber showed wider linear ranges, lower limits of detection, high extraction recoveries, and good reproducibility compared to traditional fibers.
Article
Chemistry, Analytical
Min Sun, Juanjuan Feng, Sen Han, Xiangping Ji, Chunying Li, Jiaqing Feng, Haili Sun, Jing Fan
Summary: The PIL-hybridized silica aerogel prepared by sol-gel method was used for SPME, providing good extraction performance for PAHs. The method established low detection limits and wide linear ranges with good linear coefficients for PAHs, and showed higher sensitivity, shorter extraction time, and better repeatability compared to other extraction coatings.
Article
Biochemistry & Molecular Biology
Zaual Temerdashev, Surendra Prasad, Tatiana Musorina, Tatiana Chervonnaya, Zhanna Arutyunyan
Summary: In this study, an ultrasound-assisted dispersive liquid-liquid microextraction (DLLME) procedure was developed for the recovery of different molecular weight polycyclic aromatic hydrocarbons (PAHs) from water samples. The method was optimized for the extraction of PAHs with different structures, and the analytes were determined using GC-MS and HPLC-FD/PDA methods. The developed methods allowed for the simultaneous extraction and accurate determination of 20 PAHs at low concentrations.
Article
Environmental Sciences
Chunlong Peng, Jinfeng Hu, Xin Li
Summary: A novel dispersive liquid-liquid microextraction method using the solidification of a floating organic droplet was developed to concentrate 16 polycyclic aromatic hydrocarbons (PAHs) from water samples. The effect of a hydrophilic deep eutectic solvent (DES) as a dispersant was investigated. The method showed good linearity, low detection limits, and reliable results for the determination of PAHs in real water samples.
Article
Chemistry, Analytical
Dotse Selali Chormey, Guldeniz Tonbul, Gunes Soylu, Ahmet Saygilar, Sezgin Bakirdere
Summary: The study demonstrated the enhancement of DLLME in conjunction with QuEChERS and standard methods for the preconcentration and analysis of PAHs with improved instrumental detection limits and stable precision. Application to snail samples showed nearly 100% recoveries, indicating the effectiveness and reliability of the optimized method.
ANALYTICAL LETTERS
(2022)
Article
Chemistry, Analytical
Chen Yu, Fengshou Wu, Xiaogang Luo, Juan Zhang
Summary: A porphyrin-based COF was synthesized and applied for the headspace solid-phase microextraction of PAHs, with optimized parameters leading to a wide linear range, low detection limits, and excellent repeatability. The method showed satisfactory recoveries of PAHs in water and soil samples, indicating its potential for environmental analysis.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Applied
Sara Gholizadeh, Hamid Mirzaei, Jalil Khandaghi, Mohammad Reza Afshar Mogaddam, Afshin Javadi
Summary: In this study, a novel method combining ultrasound-assisted mixed solvent extraction with magnetic ionic liquid-based effervescent tablet-assisted dispersive liquid-liquid microextraction was developed for the efficient extraction of aflatoxins and ochratoxin A from tea samples. The method showed satisfactory extraction recoveries, low detection limits, and good repeatability.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2022)
Article
Chemistry, Analytical
Arshia Alizadeh Panahi, Afshin Javadi, Mohammad Reza Afshar Mogaddam
Summary: A novel method combining microwave-assisted extraction with magnetic ionic liquid-based dispersive liquid-liquid microextraction was developed for the extraction of chloramine-T from fish samples. This method achieved high extraction recovery, low limits of detection and quantification, good repeatability, and a wide linear range. The suggested method was successfully applied to analyze various fish samples marketed in Tabriz city, Iran.
JOURNAL OF SEPARATION SCIENCE
(2023)
Article
Chemistry, Applied
Marcela Jordan-Sinisterra, Deyber Arley Vargas Medina, Fernando Mauro Lancas
Summary: A simple, sensible, and high-throughput method was developed for determining selected polycyclic aromatic hydrocarbons (PAHs) from brewed coffee samples. Three sorbents based on ionic liquids supported on silica particles were synthesized, characterized, and assessed as extraction phases in microextraction by packed sorbent (MEPS). A synthesized zwitterionic ionic liquid-based sorbet (zIL@SiO2) exhibited superior extraction capabilities. The method showed excellent linearity, precision, and trueness, and was successfully applied to investigate 13 different Colombian and Brazilian coffee samples.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2022)
Article
Chemistry, Analytical
N. Riboni, F. Bianchi, M. Scaccaglia, F. Bisceglie, A. Secchi, C. Massera, P. Luches, M. Careri
Summary: Novel solid-phase microextraction coatings based on MWCNT-CD nanocomposites were developed for ultratrace determination of 16-priority PAHs in snow samples. The use of MWCNTs-H2O2-γ-CD fiber showed superior results in facilitating the interactions between MWCNTs and CDs. The method proved to be reliable with detection and quantitation limits below 0.7 and 2.3 ng/L, RSD lower than 21%, and recoveries of 88(+/- 2)-119.8(+/- 0.4)%.
Article
Chemistry, Analytical
Anahid Rezaeefar, Mahboob Nemati, Mir Ali Farajzadeh, Mohammad Reza Afshar Mogaddam, Farzaneh Lotfipour
Summary: The study developed a combined method of dispersive micro solid-phase extraction and dispersive liquid-liquid microextraction for the simultaneous extraction of five mycotoxins in soymilk samples. The method showed low limits of detection and quantification, with acceptable repeatability in analyzing different samples from the market. The proposed approach successfully detected aflatoxin B1 in all tested samples and ochratoxin A in one sample.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Mir Ali Farajzadeh, Nasim Fazli, Sakha Pezhhanfar, Mohammad Reza Afshar Mogaddam
Summary: A method combining magnetic solid phase extraction and dispersive liquid-liquid microextraction was developed for the simultaneous extraction and preconcentration of polycyclic aromatic hydrocarbons. The method showed low limits of detection, high precision, and satisfactory recoveries. It is easy to operate and practical.
Article
Chemistry, Applied
Jilong Li, Fengze Wu, Yupu Zhang, Ji Feng, Xiujuan Wang, Yi Yang, Zhibing Wang, Hanqi Zhang
Summary: A novel supramolecular solvent based on surface-active ionic liquid was prepared and successfully used for the extraction of four triazine herbicides in tea samples. The supramolecular solvent showed advantages of simple preparation process, low viscosity, and good dispersibility.
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)