Results 81 to 90 of about 37,813 (234)
Functional, Antioxidant, and Antimicrobial Profile of Medicinal Leaves from the Amazon
AntioxidantsThe Amazon region is home to a remarkable diversity of plant species that are used in traditional medicine and cuisine. This study aimed to evaluate the functional, antioxidant, and antimicrobial properties of the leaves of Allium schoenoprasum ...
Gabriela Méndez +4 more
doaj +1 more source
Molecules, 2020 Microextraction procedures for the separation of Pb(II) from water and food samples extracts were developed. A deep eutectic solvent composed of α-benzoin oxime and iron(III) chloride dissolved in phenol was applied as a phase separator support.
Mohamed A. Habila +5 more
doaj +1 more source
Machine Learning–Based Optimization of Phthalate Extraction Conditions Using HS‐INME‐GC/MS Data
Journal of Chemometrics, Volume 40, Issue 10, October 2026.ABSTRACT Optimization of extraction conditions in GC/MS analysis remains challenging because experimental variables can interact in complex and nonlinear ways. In this study, a machine learning based chemometric workflow was applied to optimize headspace in‐needle microextraction GC/MS (HS‐INME‐GC/MS) conditions for four phthalates: dimethyl phthalate (
Hyeyoung Jung +2 more
wiley +1 more source
Analysis of possible sources and pathways of methyl tertiary-butyl ether (MTBE) in the aquatic environment [PDF]
, 2006 In the present study possible sources and pathways of the gasoline additive methyl tertiary-butyl ether (MTBE) in the aquatic environment in Germany were investigated.
Kolb, Axel
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Applied SciencesThe application of Green Analytical Chemistry (GAC) principles in method development aims to reduce waste and replace hazardous solvents with environmentally friendly alternatives.
Emilija Kostić +7 more
doaj +1 more source
Microextraction techniques [PDF]
Analytical and Bioanalytical Chemistry, 2014 M, Valcárcel, S, Cárdenas, R, Lucena
openaire +2 more sources
Drug Testing and Analysis, Volume 18, Issue 10, Page 1296-1310, October 2026.Micro‐QuEChERS sample preparation coupled to LC‐QQQ‐MS enabled sensitive quantification of nitazene analogs in 100 μL of plasma. The validated method provided low detection limits and was successfully applied to an authentic intoxication case involving N‐pyrrolidino protonitazene, supporting clinical and forensic toxicology workflows.
Karla A. O. Souza +7 more
wiley +1 more source
Aplicação de planejamento fatorial fracionário e box-behnken para otimização de extração com microgota para determinação de tricloroanisol e tribromoanisol de amostras de vinho por cromatografia a gás [PDF]
, 2012 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Quimica, Florianópolis, 2007.Neste trabalho foi desenvolvida uma metodologia analítica para determinação de 2,4,6 ...
Martendal, Edmar
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eFood, Volume 7, Issue 5, October 2026.Comparative assessment of different drying methods on the physicochemical properties and flavor quality of Chaenomeles speciosa. Changes in soluble sugars, organic acids, phenolic compounds and volatiles in Chaenomeles speciosa following different drying treatments were determined.
Houyu Kang +4 more
wiley +1 more source
Determinação de resíduos de contaminantes orgânicos em matrizes alimentícias e ambientais por microextração em fase líquida suportada por membranas e detecção por LC-MS/MS e GC-ECD [PDF]
, 2012 Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Quimica, Florianópolis, 2010Este estudo apresenta o uso da membrana microporosa de polipropileno como suporte para o ...
Bedendo, Gizelle Cristina
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