GAS CHROMATOGRAPHY--MASS SPECTROMETRY IN NEUROBIOLOGY

Gas Chromatography - Mass Spectrometry

Gas Chromatography-Mass Spectrometry

Gas chromatography (GC) is a widely applied technique in many branches of science and technology. For over half a century, GC has played a fundamental role in determining how many components and in what proportion they exist in a mixture. However, the ability to establish the nature and chemical structure of these separated and quantified compounds is ambiguous and reduced, and requires a spect...

Gas Chromatography - Mass Spectrometry

Early gas chromatography/mass spectrometry.

Spectroscopy Laboratory, The Dow Chemical Company, Midland, Michigan, USA In December 1955 or thereabouts, the authors coupled a homemade gas chromatograph to a research time-of-flight mass spectrometer constructed by W. C. Wiley, I. H. McLaren, and D. B. Harrington. This unique gas chromatography/mass spectrometry (GC/MS) instrument generated mass spectra at a lo-kHz rate for display on an osc...

Allergens in Perfumes: Gas Chromatography^ Mass Spectrometry

Perfumes (fragrance substances) are used in the formulation of consumer products to provide pleasure to the user and/or to mask malodours of some other ingredients in the products. Perfumes are also used in aromatherapy. A typical perfume may be composed of 10}300 substances selected from a battery of over 3000 synthetic and natural fragrance materials. It has been shown that approximately 2% o...