Results 101 to 110 of about 2,185,989 (175)

Capillary supercritical fluid chromatography combined with atmospheric pressure chemical ionisation mass spectrometry for the investigation of photoproduct formation in the sunscreen absorber 2-ethylhexyl-p-methoxycinnamate

open access: yes, 1996
The photoproducts formed on ultraviolet irradiation of the sunscreen absorber trans-2-ethylhexyl-p-methoxycinnamate, were separated and characterised using a new combined technique, capillary supercritical fluid chromatography-atmospheric pressure ...
Moulder, R   +6 more
core  

Separation of enantiomers of ibuprofen on chiral stationary phases by packed column supercritical fluid chromatography

open access: yes, 2001
A packed column supercritical fluid chromatography (SFC) method for the separation of ibuprofen enantiomers on a chiral stationary phase and CO2 with modifier as mobile phase has been developed at an analytical scale. Among 11 different stationary phases
Johannsen, Monika
core   +1 more source

A rapid supercritical fluid extraction method for the detection of 2-alkylcyclobutanones in gamma irradiated beef and chicken

open access: yes, 1998
2-alkylcyclobutanones have been successfully used as chemical markers for irradiated foods. Unfortunately, most sample preparation, and isolation methods for these markers from their food matrices involve a long and very tedious clean-up regimen prior to
Ismail, H., Sumar, S., Tewfik, I.
core   +1 more source

The use of a supercritical carbon dioxide-based solvent as a cost effective and environmentally sound alternative to current photoresist stripping solvents [PDF]

open access: yes, 2002
Plan BThe semiconductor industry is facing challenges that involve the use of photoresist stripping solvents. This literature review compares the current solvents used, namely sulfuric acid and hydrogen peroxide and N-methylpyrrolidine, to an alternative
Knutson, Brian
core  

Applications of supercritical fluid extraction and chromatography in forensic science

open access: yes, 2000
Supercritical fluid technology is a rapidly expanding analytical technique. Here we give a brief insight into the background of supercritical fluid technology and how supercritical fluid extraction and supercritical fluid chromatography work in analysis.
Maguire, Kristie   +5 more
core   +1 more source

Retention studies in supercritical fluid chromatography

open access: yes, 1992
There has been considerable interest in the field of Supercritical Fluid Chromatography (SFC) and it is fast becoming recognised as a very useful analytical tool, offering the speed of separation found with gas chromatography (GC) with the solvating ...
Simon Cocks (7167356)
core   +3 more sources

Construction and characterization of a high performance supercritical fluid chromatography system [PDF]

open access: yes, 2013
University of Minnesota Ph.D. dissertation. August 2013. Major: Chemistry. Advisor: Donald Poe. 1 computer file (PDF); v, 54 pages.The goal of this project is to design and build an Supercritical Fluid Chromatography instrument capable of doing fast ...
Bodnia, Logan Walter
core  

Comprehensive two-dimensional chromatography with coupling of reversed phase high performance liquid chromatography and supercritical fluid chromatography

open access: yes, 2012
Comprehensive two-dimensional chromatography with coupling of reversed phase high performance liquid chromatography and supercritical fluid ...
G Guiochon (13702597)   +2 more
core  

Supercritical-Fluid Chromatography On-Chip with Two-Photon-Excited-Fluorescence Detection for High-Speed Chiral Separations

open access: yes, 2019
Herein, we present the first example of microchip-based supercritical-fluid chromatography (SFC). A microfluidic-glass-chip platform with pressure and temperature control for fast and efficient on-column injection is described.
Josef J. Heiland   +9 more
core   +1 more source

Analytical Strategies for Tocopherols in Vegetable Oils: Advances in Extraction and Detection

open access: yesPharmaceuticals
Tocopherols, major lipid-soluble components of vitamin E, are essential natural products with significant nutritional and pharmacological value. Their structural diversity and uneven distribution across vegetable oils require accurate analytical ...
Yingfei Liu   +4 more
doaj   +1 more source

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