Article
Chemistry, Analytical
Philip Eor, Miles Byington, Jared L. Anderson
Summary: This study investigates the effects of environmental factors on the pi-complexation between silver(I) and copper(I) ions and aromatic compounds in ionic liquid media using headspace single drop microextraction coupled with HPLC. It is found that water and acetonitrile interfere with the complexation of silver(I) ions and aromatic compounds, while ethylene glycol and triethylene glycol do not.
JOURNAL OF SEPARATION SCIENCE
(2023)
Article
Biochemical Research Methods
Marcio David Bocelli, Deyber Arley Vargas Medina, Julie Paulin Garcia Rodriguez, Fernando Mauro Lancas, Alvaro Jose Santos-Neto
Summary: Dynamic single-drop microextraction (SDME) was automated using an Arduino-based Cartesian robot and combined with liquid chromatography-tandem mass spectrometry for the determination of parabens in wastewater samples. The robot-assisted technique facilitated the control of dynamic SDME, making the process more feasible, robust, and reliable. This setup proved to be a competitive strategy for the automated extraction of organic pollutants from water samples.
Article
Biochemical Research Methods
Mohamed A. Abdelaziz, Fotouh R. Mansour, Neil D. Danielson
Summary: A hydrophobic gadolinium-based magnetic ionic liquid was studied as an extraction solvent in DLLME for the first time, showing higher extraction efficiency than iron or manganese analogues, leading to improved sensitivity and reproducibility of the method, along with a reduced analysis time.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Maliheh Heidarbeigi, Mohammad Saraji, Mohammad T. Jafari
Summary: In this study, modified polyacrylonitrile/silica aerogel fibers were used as an adsorbent for thin-film microextraction of chlorpyrifos. The extracted analyte was analyzed using corona discharge ion mobility spectrometry. The results showed that the modified polyacrylonitrile/silica aerogel fibers method successfully determined chlorpyrifos in well water, river water, agricultural wastewater, and tangerine samples.
ANALYTICAL METHODS
(2022)
Review
Chemistry, Analytical
Reham E. Kannouma, Mohamed A. Hammad, Amira H. Kamal, Fotouh R. Mansour
Summary: Liquid-phase microextraction (LPME) is an important technique for sample preparation that is widely used to extract various organic, inorganic, and pharmaceutical compounds from different environmental and biological matrices. LPME has three configurations - single drop microextraction, hollow-fiber liquid-phase microextraction, and dispersive liquid-liquid microextraction - each with different applications and advantages.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Claudia Gimenez-Campillo, Marta Pastor-Belda, Natalia Campillo, Manuel Hernandez-Cordoba, Pilar Vinas
Summary: This study developed and validated an analytical method for the determination of nine NAs in ranitidine drug samples, highlighting the importance of developing analytical methods in detecting potential carcinogens in pharmaceutical products. The method showed quantification limits in the 0.21-21 ng g(-1) range, with satisfactory precision indicated by relative standard deviations lower than 12%.
Article
Chemistry, Analytical
Mir Ali Farajzadeh, Zahra Fathipour, Mehri Bakhshizadeh Aghdam, Mohammad Reza Afshar Mogaddam
Summary: The wide existence of phthalate esters in healthcare products has raised concerns among scientists due to their negative effects on human health. This study aimed to determine the presence of certain plasticizers in dental floss and developed an extraction and analysis method using gas chromatography-flame ionization detector and gas chromatography-mass spectrometry. The results showed the extraction method was effective in detecting the analytes with good precision and recovery rates.
MICROCHEMICAL JOURNAL
(2023)
Review
Chemistry, Analytical
Theodoros Chatzimitakos, Phoebe Anagnostou, Ioanna Constantinou, Kalliroi Dakidi, Constantine Stalikas
Summary: The use of magnetic ionic liquids (MILs) as unconventional solvents in sample preparation procedures has garnered significant attention, combining the advantageous properties of ionic liquids and magnetic properties. The increasing number of published reports on the use of MILs in sample preparation suggests a promising research field. Progress in this field is achieved through developing new MILs with better properties and by combining methods to create advanced extraction procedures.
Review
Chemistry, Analytical
Tianning Chen, Shuqi Liang, Yuemei Chen, Jiajia Han, Shanyue Guan, Xiaohong Chen, Wei Li, Junlang Qiu, Xin Yang, Fang Zhu, Gangfeng Ouyang
Summary: In recent years, the issue of odor in drinking water caused by disinfection has gained global attention. Accurate quantitative analysis is crucial for controlling and mitigating odorous substances in drinking water. This review summarizes the sampling, sample pretreatment, and analytical detection techniques, particularly quantitative analysis, for residual disinfectants and odorous disinfection byproducts (DBPs), and discusses research advancements and future perspectives in this field.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Mahboob Nemati, Mir Ali Farajzadeh, Mohammad Reza Afshar Mogaddam, Ali Mohebbi, Amir Reza Azimi, Nazir Fattahi, Mustafa Tuzen
Summary: In this study, a new mode of dispersive liquid-liquid microextraction called gas-controlled-deep eutectic solvent-based evaporation-assisted dispersive liquid-liquid microextraction was proposed for the determination of pyrethroid pesticides in fruit juices. By evaporating chloroform and releasing droplets of the extractant, the analytes were extracted into the aqueous phase. The method was optimized and validated, and successfully applied to fruit juice samples, which were found to be free of the selected pesticides.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Abolghasem Jouyban, Mir Ali Farajzadeh, Mohammad Reza Afshar Mogaddam, Fariba Khodadadeian, Mahboob Nemati, Maryam Khoubnasabjafari
Summary: A new microextraction procedure based on liquid-liquid microextraction using a deep eutectic solvent accelerated by microwave radiations was developed for the extraction of three beta-blockers from plasma samples. Low limits of detection, high extraction recovery, and good precision were achieved, making it an effective method for determination of the beta-blockers' concentrations in plasma samples.
MICROCHEMICAL JOURNAL
(2021)
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, Analytical
Gabriela Mafra, Camila Will, Ricardo Huelsmann, Josias Merib, Eduardo Carasek
Summary: In this study, a lab-made parallel single-drop microextraction methodology using a magnetic ionic liquid was developed to determine pesticides in human urine samples. The method exhibited satisfactory analytical performance and was successfully applied to two human urine samples.
JOURNAL OF SEPARATION SCIENCE
(2021)
Article
Chemistry, Analytical
Ping Chen, Xin Liu, Lili Wang, Caijuan Wang, Jihong Fu
Summary: A novel method of weighing paper-assisted magnetic ionic liquid headspace single-drop microextraction combined with microwave distillation and gas chromatography-mass spectrometry was successfully developed for determining essential oil components in lavender. The optimized conditions included the use of 1-octyl-3-methylimidazolium tetrachloroferrate as the extraction solvent, extraction time of 12 min, microwave power of 600 W, cyclohexane as back-extractant, and a sample amount of 30 mg. The method showed high efficiency and accuracy in analyzing lavender samples harvested from different years.
JOURNAL OF SEPARATION SCIENCE
(2021)
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.