Results 71 to 80 of about 6,944 (194)

Estudo de sorção de herbicidas pelos argilominerais vermiculita e montmorilonita

Química Nova, 2011
The clay minerals montmorillonite (MT) and vermiculite (VT), previously treated with Ca2+, K+ and Na+, were employed in a sorption study with herbicides. The herbicides 2,4-D, diuron, alachlor and metolachlor showed no interaction with MT and VT.
Edivaltrys Inayve Pissinati de Rezende, Patricio Guillermo Peralta-Zamora, Gilberto Abate   +2 more
doaj   +1 more source

Evaluating Stabilizers Effects on Aroma Release Dynamics in Ice Cream: A PTR‐ToF‐MS Analysis

Journal of Mass Spectrometry, Volume 61, Issue 8, August 2026.
ABSTRACT Capturing the dynamic volatilome of frozen matrices during phase transitions remains an analytical challenge, typically requiring invasive sampling. This study employs proton transfer reaction time‐of‐flight mass spectrometry (PTR‐ToF‐MS) as a rapid, noninvasive technique that directly samples headspace volatiles without preconcentration to ...
Camila Cossettin Teixeira, Michele Pedrotti, Lorenzo Gennari, Andrea Cavallero, Flavia Gasperi, Iuliia Khomenko, Franco Biasioli   +6 more
wiley   +1 more source

Supramolecular Solvent Liquid Phase Microextraction of Voriconazole İn Pharmaceutical and Environmental Samples With High Performance Liquid Chromatography Detection

Cumhuriyet Science Journal
In this study, a new analytical method based on the supramolecular solvent liquid phase microextraction (Ss-LPME) and HPLC was developed for the analysis of voriconazole as an active drug in the class of antifungals with a wide spectrum of action at ...
Erkan Yılmaz, Gülnihal Yıldız
doaj   +1 more source

Magnetic Nanoparticles: From Design and Synthesis to Real World Applications

Nanomaterials, 2017
The increasing number of scientific publications focusing on magnetic materials indicates growing interest in the broader scientific community. Substantial progress was made in the synthesis of magnetic materials of desired size, morphology, chemical ...
Jiri Kudr, Yazan Haddad, Lukas Richtera, Zbynek Heger, Mirko Cernak, Vojtech Adam, Ondrej Zitka   +6 more
doaj   +1 more source

Application of 2D‐Chromatography System for the Determination of Cosmetic Peptides in Skin Homogenates

Journal of Mass Spectrometry, Volume 61, Issue 8, August 2026.
ABSTRACT Peptides are increasingly employed as active ingredients in both therapeutic and cosmeceutical applications due to their high biological specificity, favorable safety profiles, and expanding market relevance. In topical formulations, peptide activity is typically confined to the skin, where widespread dermal proteases may significantly affect ...
Fosca Errante, Marco Pallecchi, Marta Menicatti, Lisa Giovannelli, Paolo Rovero, Gianluca Bartolucci   +5 more
wiley   +1 more source

Metal Oxide Thin Films Grafted on Silica Gel Surfaces: Recent Advances on the Analytical Application of these Materials

Journal of the Brazilian Chemical Society, 2001
In the highly dispersed MxOy monolayer film on a porous SiO2 surface, denoted as SiO2/MxOy, the Si-O-M covalent bond formed on the SiO2 surface restricts the mobility of the attached oxide resulting in coordinatively unsaturated metal oxides (LAS) in ...
Gushikem Yoshitaka, Rosatto Simone S.
doaj  

Syringe Solid-Phase Extraction for Cu(II) in Powder Milk Using Alginate-Chitosan-PVA Adsorbents: Method Development and Application

Indonesian Journal of Chemistry
This research designed and optimized a syringe solid-phase extraction (SPE) technique employing a modified chitosan, alginate, and PVA (CAP) adsorbent for the determination and preconcentration of Cu(II) ions in powdered milk samples.
Ahmad Akhib Ainul Yaqin, Dwi Siswanta, Suherman Suherman   +2 more
doaj   +1 more source

Life‐Cycle Environmental Impacts of Removing and Destroying PFAS From Wastewater Effluent

Water Environment Research, Volume 98, Issue 8, August 2026.
A life‐cycle assessment (LCA) framework was used to estimate environmental impacts from retrofitting existing water resource recovery facilities (WRRFs) to remove and destroy per‐ and polyfluoroalkyl substances (PFAS) from wastewater effluent to support policy, permitting, and planning by regulatory agencies and utilities.
Anderson C. Ellis, Alison L. Ling, Rebecca Vermace, R. Hapaki Lorenzo Quintana, Scott Kyser   +4 more
wiley   +1 more source

Early Detection of Volatile Tumor Biomarkers Using Chemoresistive Sensors and MEMS-Based Preconcentration: A Study on K562 Cell Line

Engineering Proceedings
The analysis of volatile organic compounds emitted by cell cultures provides a non-invasive method for monitoring metabolic and oxidative stress states.
Melissa Tamisari, Elena Spagnoli, Maria Teresa Altieri, Michele Astolfi, Monica Borgatti, Giulia Breveglieri, Ivan Elmi, Vincenzo Guidi, Luca Masini, Arianna Rossi, Giuseppe Sabbioni, Emanuela Tavaglione, Stefano Zampolli, Barbara Fabbri   +13 more
doaj   +1 more source

Preconcentration of Trace Elements by Sorption

Analytical Sciences, 1991
In the determination of trace elements in complex matrices, enrichment and separation of the analytes is of special importance. A wide variety of methods have been proposed for preconcentration according to the nature of the samples, the types and concentrations of the analytes, and the methods to be used for measurement.
openaire   +2 more sources