Results 151 to 160 of about 911,645 (210)

Applications of Hadamard Transform to Gas Chromatography/Mass Spectrometry and Liquid Chromatography/Mass Spectrometry

Analytical Chemistry, 2008
Successful application of the Hadamard transform (HT) technique to gas chromatography/mass spectrometry (GC/MS) and liquid chromatography/mass spectrometry (LC/MS) is described. Novel sample injection devices were developed to achieve multiple sample injections in both GC and LC instruments. Air pressure was controlled by an electromagnetic valve in GC,
Cheng-Huang, Lin   +5 more
openaire   +2 more sources

Supersonic gas chromatography/mass spectrometry

Rapid Communications in Mass Spectrometry, 2001
Abstract A new gas chromatography/mass spectrometry (GC/MS) system was designed and evaluated which we have named ‘Supersonic GC/MS’. It is based on a modification of a commercially available GC/MS system to include a supersonic molecular beam (SMB) MS interface.
A, Amirav, A, Gordin, N, Tzanani
openaire   +2 more sources

Frontal affinity chromatography—mass spectrometry

Nature Protocols, 2007
Frontal affinity chromatography (FAC) is a biophysical method for the discovery and characterization of molecular interactions in a flow-based system. Several different modes of analysis are possible by interfacing to the mass spectrometer, including robust single-compound characterizations as well as high-throughput screening of over 1,000 compounds ...
Ella S M, Ng   +4 more
openaire   +2 more sources

Gas Chromatography-Mass Spectrometry

2006
Gas chromatography-mass spectrometry (GC-MS) has been used in hormone assays particularly for steroids in biological fluids. The combination of GC with MS exploits the high-resolving power of gas chromatography to separate closely related molecules, and the ability of the MS to provide precise data for identification and quantification of the separated
openaire   +4 more sources

Micellar electrokinetic chromatography-mass spectrometry

Journal of Chromatography A, 1997
The combination of micellar electrokinetic chromatography (MEKC) with mass spectrometry (MS) is very attractive for the direct identification of analyte molecules, for the possibility of selectivity enhancement, and for the structure confirmation and analysis in a MS-MS mode.
L, Yang, C S, Lee
openaire   +2 more sources

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