Results 41 to 50 of about 10,305 (228)

Fluidos supercríticos em química analítica. III.: aplicações Supercritical fluids in analytical chemistry. III.: applications

Química Nova, 2006
The first two papers in this series described the basic theory involved in supercritical fluid chromatography (SFC), how the technique evolved from gas and liquid chromatography and how the instrumentation was developed.
Emanuel Carrilho, Maria Cecília H. Tavares, Fernando M. Lanças   +2 more
doaj   +1 more source

Systematic Comparison of Homogeneous Catalyst Recycling Strategies: Organic Solvent Nanofiltration vs. Liquid‐Liquid‐Multiphase

Chemistry – A European Journal, EarlyView.
Key performance metrics, including hexene conversion rates and catalyst leaching, were evaluated over extended continuous operation periods. Results demonstrated that the OSN method significantly outperformed the multiphasic system, maintaining hexene conversion at 83% after 76 h compared to a decline to 72% in the multiphasic setup after 36 h ...
Sven Störtte, Lisa Steinwachs, Rucha S. Medhekar, Robinson Novemen, Andreas J. Vorholt   +4 more
wiley   +1 more source

Data comparing the separation and elution of vitamin D metabolites on an ultra performance supercritical fluid chromatography tandem-mass spectrometer (UPSFC-MS/MS) compared to liquid chromatography (LC) and data presenting approaches to UPSFC method optimization

Data in Brief, 2018
The data presented is related to the research article “Analysis of multiple vitamin D metabolites by ultra performance supercritical fluid chromatography-tandem mass spectrometry (UPSFC-MS/MS)” (Jenkinson et al., 2018) [1]. This article will include data
Carl Jenkinson, Angela E. Taylor, Karl-Heinz Storbeck, Martin Hewison   +3 more
doaj   +1 more source

Enhancement of dissolution of atorvastatin through preparation of polymeric solid dispersions using supercritical fluid technology

Research in Pharmaceutical Sciences, 2020
Background and purpose: This study aimed at preparation of solid dispersions in order to enhance dissolution of poorly water-soluble atorvastatin using supercritical CO2 technology.
Bashar Altaani, Rana Obaidat, Walaa Malkawi   +2 more
doaj   +1 more source

Sustainable Hydrogen Production by Glycerol and Monosaccharides Catalytic Acceptorless Dehydrogenation (AD) in Homogeneous Phase

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
Sustainable hydrogen production can be obtained from hydogen‐rich biomass‐derived organic molecules through Acceptorless Dehydrogenation (AD) reactions. Glycerol and sugars are available in large quantities from industry and can be successfully used as substrates in AD protocols, in the presence of tailored, selective, easily tunable and thermally ...
Sylwia Kostera, Luca Gonsalvi
wiley   +1 more source

EKSTRAKSI LILIN DAUN PINUS DENGAN TEKNOLOGI SUPERKRITIKALFLUIDA CO2

Jurnal Penelitian Hasil Hutan (Journal of Forest Products Research), 2017
The objectives of this research is to study the influence of flushing activities on crude waxes yield, and to study the extraction of waxes from pine needles by using supercritical fluid C02 technology.
Bambang Wiyono
doaj   +1 more source

Sustainability in Analytical Chemistry Illustrated by Pharmaceutical Nitrosamine Testing

ELECTROPHORESIS, EarlyView.
ABSTRACT Following the valsartan scandal in 2018, the testing of drug substances and drug products for N‐nitrosamines has become a critical and mandatory quality control measure. The European Pharmacopoeia chapter 2.5.42 currently describes three analytical methods for this purpose: HPLC–MS/MS, GC–MS, and GC–MS/MS.
Felix Bredendiek, Sebastian Schmidtsdorff, Maria Kristina Parr   +2 more
wiley   +1 more source

RECENT ADVANCES IN GAS, LIQUID AND SUPERCRITICAL FLUID CHROMATOGRAPHY IN THE CONTEXT OF SUSTAINABLE/ GREEN CHEMISTRY

International Journal of Pharmacy & Integrated Health Sciences
Background: Chromatographic techniques such as gas chromatography (GC), liquid chromatography (LC) and supercritical fluid chromatography (SFC) have long been employed in analytical chemistry. However, using or producing certain organic solvents and non-
Nimra Sohail, Bushra Naureen, Mehmood Asghar, Aziza Sarwar, Aisha Altaf   +4 more
doaj   +1 more source

Supercritical CO2 Extracts and Volatile Oil of Basil (Ocimum basilicum L.) Comparison with Conventional Methods

Separations, 2018
Interest in new products from aromatic plants as medical and nutritional compounds is increasing. The aim of this work was to apply different extraction methods, including the use of supercritical carbon dioxide extraction, and to test the antioxidant ...
José Coelho, Jerson Veiga, Amin Karmali, Marisa Nicolai, Catarina Pinto Reis, Beatriz Nobre, António Palavra   +6 more
doaj   +1 more source

The need to merge supercritical fluid chromatography into undergraduate curricula for the twenty-first century

Green Chemistry Letters and Reviews, 2021
Complementarity to liquid and gas chromatography, supercritical fluid chromatography (SFC) is becoming a mainstream separation technique. There is a global demand for more SFC users since ‘green’ method development has become a favorable target for ...
Tricia Naicker, Kamini Govender
doaj   +1 more source