Results 111 to 120 of about 2,185,989 (175)

Separation of stereoisomers in a simulated moving bed-supercritical fluid chromatography plant

open access: yes, 1999
The combination of two techniques, simulated moving bed (SMB) and supercritical fluid chromatography (SFC), leads to an apparatus with unique features. Besides the known advantages of the SMB process, like reduced solvent consumption and its continuity ...
Johannsen, Monika   +3 more
core   +1 more source

Determination of hexabromocyclododecane in soil by supercritical fluid extraction and gas chromatography mass spectrometry

open access: yes, 2018
Effective detection of hexabromocyclododecane using an innovative method combined with supercritical fluid extraction and gas chromatography mass spectrometry was established.
Xinlei Wang   +5 more
core   +1 more source

SUPER CRITICAL FLUID CHROMATOGRAPHY: AN OVERVIEW

open access: yes, 2020
Supercritical Fluid Chromatography (SFC) is a form of normal phase chromatography, first used in 1962.SFC typically utilizes carbon dioxide as the mobile phase; therefore the entire chromatographic flow path must be pressurized. Because the supercritical
V, Ranjeet Kumar
core  

Construction of an off-line two dimensional reversed-phase liquid chromatography/ultra-high performance supercritical fluid chromatography method for rapid and comprehensive analysis of Piper kadsura

open access: yes, 2017
In this study, ultra-high performance supercritical fluid chromatography(UHPSFC) was chosen to construct an off-line two dimensional chromatography with reversed-phase liquid chromatography (RPLC) for rapid and comprehensive analysis of Piper kadsura ...
Jin, Yu   +13 more
core   +1 more source

What Type of Research Is Done in the Laboratory of Pharmaceutical Analytical Chemistry of the University of Geneva?

open access: yesCHIMIA, 1997
This article presents briefly the main research projects developed in the Laboratory of Pharmaceutical Analytical Chemistry at the University of Geneva.
Jean-Luc Veuthey, Philippe Christen
doaj  

A rapid supercritical fluid extraction method for the qualitative detection of 2-alkylcyclobutanones in gamma-irradiated fresh and sea water fish

open access: yes, 1998
2-Alkylcyclobutanones are routinely used as chemical markers for irradiated foods containing lipids. However, current extraction procedures (soxhlet-Florisil chromatography) for the isolation of these markers involve a long and tedious clean-up regime ...
Tewfik, I.   +3 more
core   +1 more source

Optimization of isocratic supercritical fluid chromatography for enantiomer separation

open access: yes, 2010
This paper presents multi-objective optimization analysis and experimental implementation of a single column isocratic supercritical fluid chromatography process for the enantioseparation of flurbiprofen.
Arvind Rajendran   +4 more
core   +1 more source

Enantioselective separation of certain analytes using supercritical fluid chromatography and high performance liquid chromatography [PDF]

open access: yes, 2017
(EN) Cellulose tris-(3,5-dimethylphenylcarbamate) chiral stationary phase was used for separation of selected 24 analytes. Enantioseparations were realized using two systems, high performance liquid chromatography and supercritical fluid chromatography ...
Martínková, Monika
core  

DIRECT ENANTIOMERIC SEPARATION OF PHENYLALANINE, DOPA AND THEIR INTERMEDIATES BY SUPERCRITICAL FLUID CHROMATOGRAPHY

open access: yes, 1992
Phenylalanine (Phe), 3-(3,4-dihydroxyphenyl)alanine (DOPA) and their corresponding intermediates [N-acyl alkyl esters of Phe, DOPA, 3-(3,4-dimethoxylphenyl)alanine, 3-(3-methoxyl-4-hydroxyphenyl)alanine and 3-(3,4-methylenedioxyphenyl)alanine] were ...
ZHOU, LM, SHENG, YF, LIU, XL, LOU, XW
core  

Supercritical fluid extraction and chromatographic analysis (HRGC-FID and HRGC-MS) of Lupinus spp. alkaloids

open access: yesJournal of the Brazilian Chemical Society, 2000
The alkaloid extracts from Lupinus spp., obtained by conventional methods (maceration/sonication - solid phase extraction; maceration/sonication - liquid-liquid extraction) and SFE (supercritical fluid extraction) using CO2 and modified CO2 (CO2/MeOH ...
Nossack Ana C.   +3 more
doaj  

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