Results 41 to 50 of about 634,784 (262)

Natural deep eutectic solvents and natural solid biosorbents in microextraction techniques of organic compounds based on chromatographic techniques: A critical review

Advances in Sample Preparation
Analytical chemistry has increasingly focused on the environmental impact of its methods, with significant attention given to green principles in sample preparation. Techniques like Solid-Phase Microextraction (SPME), Micro-Solid-Phase Extraction (µ-SPE),
Eduardo Carasek, Lucas Morés, Natan da Cunha, Guilherme Leal Branco, Adriana Neves Dias   +4 more
doaj   +1 more source

Recent Applications of Solid Phase Microextraction Coupled to Liquid Chromatography

Separations, 2021
Solid phase microextraction (SPME) is one of the most popular sample preparation methods which can be applied to organic compounds allowing the simultaneous extraction and pre-concentration of analytes from the sample matrix.
Carlo Zambonin, Antonella Aresta
doaj   +1 more source

Microextraction Techniques Coupled to Liquid Chromatography with Mass Spectrometry for the Determination of Organic Micropollutants in Environmental Water Samples

Molecules, 2014
Until recently, sample preparation was carried out using traditional techniques, such as liquid–liquid extraction (LLE), that use large volumes of organic solvents.
Mª Esther Torres Padrón, Cristina Afonso-Olivares, Zoraida Sosa-Ferrera, José Juan Santana-Rodríguez   +3 more
doaj   +1 more source

Microextraction and Eco-Friendly Techniques Applied to Solid Matrices Followed by Chromatographic Analysis

Separations
In this review, a 5-year overview on environmentally friendly approaches for the extraction of the most relevant organic pollutants in soil, sediment, particulate matter, and sewage sludge coupled with chromatographic analysis is reported.
Attilio Naccarato, Rosangela Elliani, Antonio Tagarelli   +2 more
doaj   +1 more source

Integrated Assessment of Lipid Oxidation and Off‐Flavor Formation in Plant Protein Powders

Journal of the American Oil Chemists' Society, EarlyView.
Impact of residual lipids on oxylipin and off‐flavor formation in commercial plant proteins: A detailed analysis of precursor‐product relationships by GC‐FID, LC‐MS/MS, and GC‐MS. ABSTRACT The widespread adoption of plant proteins is hindered by their inherent off‐flavors, often linked to lipid oxidation products.
Fernanda Furlan Goncalves Dias, Wellington da Silva Oliveira, Stanislau Bogusz Junior, Ameer Y. Taha   +3 more
wiley   +1 more source

Determining the distribution of triclosan and methyl triclosan in estuarine settings [PDF]

, 2014
We have developed a method for the analysis of two sewage-derived contaminants: triclosan (TCS), an antibacterial agent, and methyl triclosan (MTCS), a TCS metabolite.
Agüera, Azzouz, Balmer, Baltussen, Beltran, Bester, Buth, Canosa, Canosa, Cantwell, Casas-Ferreira, Chen, Chu, Cottell, Cueva-Mestanza, Eduardo González-Mazo, El Rayis, Fernandes, Fiss, Gilart, Giordano, Göbel, Heidler, Kantiani, Kawaguchi, Kuster, Lara-Martín, Lara-Martín, Lara-Martín, Lindström, Lozano, Marina G. Pintado-Herrera, Miller, Pablo A. Lara-Martín, Pedrouzo, Petrovic, Prieto, Pérez-Carrera, Quintana, Silva, Sánchez-Brunete, Ternes, Wu, Zaroogian, Zhao   +44 more
core   +2 more sources

Valproic acid extraction methods in human samples for gas chromatography analysis: a review

Drug Analytical Research
Valproic acid (VPA) is widely used as an important drug for the treatment of epilepsy, seizures, bipolar disorders, and migraines. However, its narrow therapeutic range lead to risks of unintentional poisoning and potential suicide.
Juliana Blume de Oliveira, Bruno Pereira dos Santos, Marcelo Arbo   +2 more
doaj   +1 more source

Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Elements absorb electromagnetic radiation (light) of a specific wavelength in proportion to the number of atoms in its path. As the atoms absorb this light energy, electrons rise from the ground state to an excited state. In atomic absorption spectrometry (AAS), high temperatures produce clouds of atoms from the sample (atomization) and ...
Emily Cintia Tossi de A. Costa, Jildimara de Jesus Santana, Viviane de Oliveira Campos, Felipe Fernandes Barbosa, Gregory S. Patience   +4 more
wiley   +1 more source

Bacteria isolated from Bengal cat (Felis catus × Prionailurus bengalensis) anal sac secretions produce volatile compounds potentially associated with animal signaling. [PDF]

, 2019
In social animals, scent secretions and marking behaviors play critical roles in communication, including intraspecific signals, such as identifying individuals and group membership, as well as interspecific signaling.
Cho, Adrienne W, Coil, David A, Davis, Cristina E, Eisen, Jonathan A, Ganz, Holly H, Jospin, Guillaume, McCartney, Mitchell M, Yamaguchi, Mei S, Zaw, Thant H   +8 more
core   +1 more source

Sample treatment platform for automated integration of microextraction techniques and liquid chromatography analysis

HardwareX, 2019
Sample preparation performance influences the quality of every chemical analysis. Since it is the most labor-intensive stage in the nearly all-analytical protocols, sample preparation automation would be desirable, to increase the analytical throughput ...
Deyber Arley Vargas Medina, Luís Felipe Rodriguez Cabal, Fernando Mauro Lanças, Álvaro José Santos-Neto   +3 more
doaj   +1 more source