Article
Chemistry, Analytical
Vasagee Elencovan, Noorfatimah Yahaya, Nozlena Abdul Samad, Nur Nadhirah Mohamad Zain
Summary: A vortex-assisted surfactant enhanced emulsification liquid-liquid microextraction method based on non-ionic silicone surfactant was successfully developed for the determination of organophosphorus pesticides in food samples. This method is convenient, rapid, and environmentally friendly, with satisfactory recovery values for the target analytes.
JOURNAL OF SEPARATION SCIENCE
(2022)
Article
Chemistry, Analytical
M. C. Villegas-Alvarez, A. Arias-Borrego, I. Velasco, T. Garcia-Barrera
Summary: Sample treatment is a bottleneck in untargeted metabolomics, especially for complex samples like food or biofluids. This study developed a new analytical extraction method called three-phase-UA-HF-LPME, which improved the extraction efficiency and was validated using human milk. The method showed better sensitivity, enrichment factors, and metabolite coverage compared to the conventional liquid-liquid extraction method.
MICROCHEMICAL JOURNAL
(2023)
Article
Spectroscopy
Heba T. Elbalkiny, Ali M. Yehia
Summary: The study combined data interpretation algorithm and extraction protocol for selective analysis of three antibiotics in milk samples, achieving efficient extraction and meeting residue limits specified by the European Union. Artificial neural networks successfully resolved spectral overlap between the studied drugs, and the proposed method outperformed reported chromatographic methods in terms of simplicity and cost-effectiveness.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Multidisciplinary
John M. Kokosa
Summary: Liquid phase microextraction (LPME) techniques are increasingly important in bioanalytical sample preparation due to their versatility, adaptability, sensitivity, and adherence to green analytical chemistry principles. Continuous innovation and improvements in LPME methods provide potential for new applications in bioanalytical sample preparation. Current trends focus on bioanalytical sample preparation and the use of non-traditional green solvents in LPME methods.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2021)
Article
Biochemical Research Methods
Qian Zhou, XiaoLu Su, YanXing Yao, Bin He, FengMei Jin, MengYue Gao, Qi Wang, GuiPing Feng, BaoXi Li, Rui Liu, Jun Dong
Summary: A low-toxicity hydrophobic deep eutectic solvent (DES) was synthesized and characterized, and a simple and rapid vortex-assisted liquid-liquid microextraction method was developed based on this DES for the extraction of eight quinolones from cattle urine. The method showed good linearity, with linear ranges of 1 to 100 μg/L, and low limits of detection and quantification. The average extraction recoveries of spiked cattle urine samples were satisfactory. This method provides a reference for the pre-treatment of quinolone residue detection.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Review
Chemistry, Analytical
Nasim Nourani, Arezou Taghvimi, Ahad Bavili-Tabrizi, Yousef Javadzadeh, Siavoush Dastmalchi
Summary: The abuse of amphetamine and its stimulant derivatives poses serious concerns with regards to psychological disorders and dramatic social problems worldwide. Accurate determination and analysis of these drugs are essential skills for clinical and forensic laboratories. Simple and effective sample preparation steps are necessary to improve analysis results and reduce adverse matrix effects.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2022)
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.
Article
Environmental Sciences
Zhao-hui Wang, Dou-dou Xu, Xiao-hong Bai, Shuang Hu, Rong-rong Xing, Xuan Chen
Summary: By using charge-transfer supramolecular synergistic three-phase microextraction system, the extraction and enrichment of three nitrophenol isomers were investigated. A combination of charge transfer supramolecular-mediated hollow fiber liquid-phase microextraction (CTSM-HF-LPME) and high-performance liquid chromatography-ultraviolet detector (HPLC-UV) method was established for the determination of real environmental water samples. The study found that the nitrophenols formed charge-transfer supramolecules with electron-rich hollow fibers, promoting their transport in the three-phase extraction system and significantly increasing their enrichment factors. Factors affecting the enrichment factors of the nitrophenols were investigated and optimized, leading to optimal conditions for analysis. The method showed good selectivity and sensitivity, and was successfully applied to the trace detection of real water samples.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Chemistry, Analytical
Mahdi Ghorbani, Parisa Mohammadi, Majid Keshavarzi, Aliakbar Ziroohi, Morteza Mohammadi, Mohsen Aghamohammadhasan, Maryam Pakseresht
Summary: Antidepressants are a crucial class of drugs for treating depression, and determining their presence in biological samples is important for controlling adverse effects and studying their pharmacokinetics. However, the low concentration and high matrix effects of these drugs in samples present a challenge for direct measurement. Sample preparation techniques, such as extraction and microextraction, are used to overcome these difficulties. This review investigates various extraction and microextraction methods for antidepressants in biological, water, and wastewater samples, and discusses their advantages, disadvantages, and recent developments.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2023)
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, Multidisciplinary
Francisco Pena-Pereira, Isela Lavilla, Carlos Bendicho
Summary: This review examines cutting-edge advances in greener analytical methods for sample preparation, focusing on the use of environmentally friendly solvents and adsorbents, integration of unitary steps, miniaturization, and automation. The paper also addresses concluding remarks and additional considerations for further improvements.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2021)
Article
Chemistry, Analytical
Leyla Haidari-Khoshkelat, Jahan Bakhsh Raoof, Milad Ghani, Reza Ojani
Summary: In this study, a combination of two extraction techniques was used to analyze antibiotics in water and urine samples. The method was found to accurately quantify the selected analytes and was applicable to complex biological samples.
ANALYTICA CHIMICA ACTA
(2022)
Review
Chemistry, Analytical
Sherin F. Hammad, Inas A. Abdallah, Alaa Bedair, Fotouh R. Mansour
Summary: Homogeneous liquid-liquid extraction is an alternative sample preparation technique that overcomes some drawbacks of conventional liquid-liquid extraction, and is more suitable for the extraction of delicate macromolecules while showing better performance in liquid chromatography with tandem mass spectrometry.
JOURNAL OF SEPARATION SCIENCE
(2022)
Article
Engineering, Environmental
Jibin An, Guoqiang Li, Wantong Si, Wei Chen, Jiahong He, Huixia Feng, Jianyang Chen, Haimei Fu
Summary: The study designs a chemical reagent-free Photoelectric-Fenton (PEF) system, which can efficiently eliminate emerging organic pollutants in wastewaters. The system generates H2O2 using O-2• and degrades pollutants using •OH, showing promising application potential.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Analytical
Renyong Zhao, Juan An, Yaming Sun, Lijun He, Xiuming Jiang, Shusheng Zhang
Summary: The combination of solvent extraction and ionic liquid-based dispersive liquid?liquid microextraction (IL-DLLME) was successfully used for the direct extraction, purification, and enrichment of four aflatoxins (AFs) in wheat, achieving avoidance of tedious steps and reducing organic solvent consumption. The developed technique allows for efficient isolation, purification, and enrichment of AFs in a simple procedure.
MICROCHEMICAL JOURNAL
(2021)