Results 21 to 30 of about 140,762 (162)
In-depth two-year study of phenolic profile variability among olive oils from autochthonous and Mediterranean varieties in Morocco, as revealed by a LC-MS chemometric profiling approach [PDF]
, 2016 Olive oil phenolic fraction considerably contributes to the sensory quality and nutritional value of this foodstuff. Herein, the phenolic fraction of 203 olive oil samples extracted from fruits of 4 autochthonous Moroccan cultivars ("Picholine Marocaine",
Bajoub, Aadil +7 more
core +3 more sources
Modified electrode with palladium film for voltammetric determination of phosphite
Eclética Química, 2018 Phosphite ions constitute an important inorganic component as phosphorus source in soil fertilization, showing a large number of advantages in relation to phosphate.
Helenice Akemi Ito +3 more
doaj +1 more source
Recursos Rurais, 2013 A matrix solid-phase dispersion process to extract polyphenols from grape marc, a winemaking byproduct, has been optimized by Response Surface Methodology.
Marta Lores +4 more
doaj +1 more source
Ecología Austral, 2015 La acumulación de estiércol de ganado vacuno sobre la superficie de los corrales en actividades de engorde a corral o feedlot genera grandes volúmenes de efluentes que pueden afectar la calidad del agua superficial y subsuperficial.
Ana R. García +5 more
doaj +1 more source
Daytime and nighttime removal processes of atmospheric NO2 and NH3 in Araraquara's region – SP
Eclética Química, 2018 Nitrogen oxides and ammonia are important nitrogen compounds which are emitted to the atmosphere. They are very important substances in the environment. In the atmosphere, these substances may undergo diverse reactions that result in changes of chemical ...
Cássia Ugucione +3 more
doaj +1 more source
Determination of tributyltin at parts-per-trillion levels in natural waters by second-order multivariate calibration and fluorescence spectroscopy [PDF]
, 2013 This work presents a non-sophisticated approach for the trace determination of tributyltin, the most toxic organotin species, in very interfering environments, combining fluorescence measurements of its morin complex and the selectivity of second-order ...
Aguilar, Luis Felipe +4 more
core +2 more sources
VALIDAÇÃO DE MÉTODO ANALÍTICO PARA ANÁLISE DE AMITRAZ EM MEL UTILIZANDO GC/TSD
Eclética Química, 2018 This paper describes the validation of method for analysis of the acaricide amitraz in honey using nhexane/acetone extraction, cleanup in cartridge of solid phase extraction (SPE) and analysis by gas chromatography with nitrogen-phosphorus detector (GC ...
Flavio Soares Silva +1 more
doaj +1 more source
Nanomaterials, 2021 Asymmetrical flow field-flow fractionation (AF4) coupled to UV-Vis and dynamic light scattering (DLS) detectors in series, was tested for stability studies of dispersions of citrate-capped silver nanoparticles (AgNPs) in several water matrices.
Aaron Boughbina-Portolés +3 more
doaj +1 more source
Angewandte Chemie, Volume 138, Issue 10, 2 March 2026.A molecular manganese electrocatalyst enables the direct electrochemical capture and conversion of dilute CO2 (1% – 0.2%) to CO with nearly unit Faradaic efficiency, achieving high efficiency even at atmospheric concentrations (420 ppm). By bypassing energy‐intensive pre‐concentration steps, this integrated approach highlights a sustainable pathway for
Mattia Vettori +6 more
wiley +2 more sources
Avances en Ciencias e Ingeniería, 2020 The methodological strategy of project-based learning has been implemented in Analytical Chemistry laboratories, specifically in the subject of Basic Analytical Chemistry Laboratory of the Chemistry Degree, with the aim of contextualizing the practices ...
Juan F. Ayala-Cabrera +3 more
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