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J Chromatogr

Title:		Gas chromatographic analysis of volatiles in fluid and gas inclusions
Author(s):		Andrawes F; Holzer G; Roedder E; Gibson EK; Oro J;
Address:		"American Cyanamid Company, Chemical Research Division, Stamford, CT 06904, USA"
Journal Title:		J Chromatogr
Year:		1984
Volume:		302
Issue:
Page Number:		181 - 193
DOI:		10.1016/s0021-9673(01)89010-5
ISSN/ISBN:
Abstract:		"Most geological samples and some synthetic materials contain fluid inclusions. These inclusions preserve for us tiny samples of the liquid and/or the gas phase that was present during formation, although in some cases they may have undergone significant changes from the original material. Studies of the current composition of the inclusions provide data on both the original composition and the change since trapping. These conclusions are seldom larger than 1 millimeter in diameter. The composition varies from a single major compound (e.g., water) in a single phase to a very complex mixture in one or more phases. The concentration of some of the compounds present may be at trace levels. We present here some analyses of inclusion on a variety of geological samples, including diamonds. We used a sample crusher and a gas chromatography-mass spectrometry (GC-MS) system to analyze for organic and inorganic volatiles present as major to trace constituents in inclusions. The crusher is a hardened stainless-steel piston cylinder apparatus with tungsten carbide crushing surfaces, and is operated in a pure helium atmosphere at a controlled temperature. Samples ranging from 1 mg to 1 g were crushed and the released volatiles were analyzed using multi-chromatographic columns and detectors, including the sensitive helium ionization detector. Identification of the GC peaks was carried out by GC-MS. This combination of procedures has been shown to provide geochemically useful information on the processes involved in the history of the samples analyzed"
Keywords:		"Aluminum Oxide/analysis Carbon Dioxide Chemistry Techniques, Analytical/*instrumentation/methods Chromatography, Gas Diamond/analysis Gas Chromatography-Mass Spectrometry Gases/*analysis Geologic Sediments/*analysis/*chemistry Hydrocarbons Hydrogen Hydrog;"
Notes:		"MedlineAndrawes, F Holzer, G Roedder, E Gibson, E K Jr Oro, J eng Netherlands 1984/01/01 J Chromatogr. 1984; 302:181-93. doi: 10.1016/s0021-9673(01)89010-5"