Composition of Hydrocarbons in Synthetic Diamonds Grown in a Fe—Ni—C System (according to Gas Chromatography—Mass Spectrometry Data)

Composition of Hydrocarbons in Synthetic Diamonds Grown in a Fe—Ni—C System (according to Gas Chromatography—Mass Spectrometry Data)

The first data of chromatography—mass spectrometry analysis of volatiles from crystals of synthetic diamonds grown in a Fe—Ni—C system at 1350–1400°С and 5.5–6.0 GPa are presented. The composition of the fluid in equilibrium with the metal-carbon melt is determined, and a comparative estimation for...

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Veröffentlicht in:Doklady earth sciences 2018-08, Vol.481 (2), p.1004-1007
Hauptverfasser: Tomilenko, A. A., Bul’bak, T. A., Chepurov, A. I., Sonin, V. M., Zhimulev, E. I., Pokhilenko, N. P.
Format: Artikel
Sprache:eng
Schlagworte:
Analysis
Chromatography
Composition
Crystal growth
Crystals
Derivatives
Diamonds
Earth and Environmental Science
Earth Sciences
Gas chromatography
Geochemistry
Heavy metals
Hydrocarbons
Iron
Mantle (Geology)
Mass spectrometry
Mass spectroscopy
Methane
Molecular weight
Nickel
Raman spectroscopy
Scientific imaging
Spectroscopy
Sulfides
Volatile compounds
Volatiles
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Zusammenfassung:The first data of chromatography—mass spectrometry analysis of volatiles from crystals of synthetic diamonds grown in a Fe—Ni—C system at 1350–1400°С and 5.5–6.0 GPa are presented. The composition of the fluid in equilibrium with the metal-carbon melt is determined, and a comparative estimation for the compounds of different hydrocarbons and their derivatives is made. It is shown that a significant role in these processes is played by high-molecular-weight hydrocarbons; and the total share of hydrocarbons and their derivatives in the fluid compounds can exceed 86%.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X18080111