Results 21 to 30 of about 9,099 (177)

Innovative Solutions for Food Analysis: Microextraction Techniques in Lipid Peroxidation Product Detection

Separations, 2023
Lipid peroxidation, the most aggressive reaction in food, results in the formation of reactive organic compounds that detrimentally impact food sensory qualities and consumers’ health.
Jorge A. Custodio-Mendoza, Ana M. Ares-Fuentes, Antonia M. Carro   +2 more
doaj   +1 more source

Principais técnicas de preparo de amostra para a determinação de resíduos de agrotóxicos em água por cromatografia líquida com detecção por arranjo de diodos e por espectrometria de massas

Química Nova, 2011
The determination of pesticide residues in water samples by Liquid Chromatography require sample preparation for extraction and enrichment of the analytes with the minimization of interferences to achieve adequate detection limits.
Sergiane Souza Caldas, Fábio Ferreira Gonçalves, Ednei Gilberto Primel, Osmar Damian Prestes, Manoel Leonardo Martins, Renato Zanella   +5 more
doaj   +1 more source

Recent Advances in Applications of Ionic Liquids in Miniaturized Microextraction Techniques

Molecules, 2018
Green sample preparation is one of the most challenging aspects in green analytical chemistry. In this framework, miniaturized microextraction techniques have been developed and are widely performed due to their numerous positive features such as ...
Maria Kissoudi, Victoria Samanidou
doaj   +1 more source

Recent progress in solid- and liquid-phase microextraction methods for the extraction and quantification of current-use pesticides

Advances in Sample Preparation
The widespread use of pesticides has led to their pervasive presence in diverse environmental matrices such as water, air, and soil. Therefore, accurate and reliable determination of pesticides in various sample types is essential.
Seyedeh Bentolhoda Hosseinian, Milad Ghani, Jahan Bakhsh Raoof   +2 more
doaj   +1 more source

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

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

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

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

Comparative Study of Free and Total Fatty Acids of Spreadable Cheeses by Mass Spectrometry Methods

ChemFoodChem, EarlyView.
This study focuses on the determination of FFAs in spreadable cheeses and alternatives using a fast Liquid Chromatography‐High Resolution Mass Spectrometry method. A Gas Chromatography‐Mass Spectrometry method was used to determine the composition (%) of total FAs in the same samples.
Christiana Mantzourani, Georgia Koutsouridou, Eleftheria H. Kaparakou, Dimitra Daferera, Petros A. Tarantilis, Golfo Moatsou, Maroula G. Kokotou   +6 more
wiley   +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