5. Conclusion
This article describes a non-exhaustive range of methods for the ultra-high vacuum extraction of noble gases trapped in rocks and minerals. These techniques, connected to specific gas purification systems and static mass spectrometer analyzers, are used in research laboratories to access geochemical information important for understanding geological processes.
All the extraction techniques mentioned, although developed to meet analytical requirements specific to laboratories (nature of samples and gases analyzed, concentrations, extraction temperature and yield, etc.), can be modified in terms of enclosure geometry, materials used, extraction capacities, etc., to match the requirements of new applications. Some of these techniques can also be used to extract volatiles other than noble gases, such as N 2 , O ...
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Unit operations. Chemical reaction engineering
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Conclusion
Bibliography
Events
Development In Noble Gas Understanding and Expertise (DINGUE). Workshop organized each year in conjunction with the GOLDSCHIMDT conference.
Standards and norms
- CF flange connection elements: the elements are made of 316 L stainless steel [DIN 17 440 – WN 14 404) Z2CND17-12] and DIN 28 403 - « Pneurop » 6601 - 1981
- Cuivre OFHC (Oxygen Free High Conductivity ): Cuivre élaboré suivant une méthode américaine. Son équivalent français est le cuivre Cu-c1 ou 2 - ISO431 -
Patents
ZIMMERMANN (L.), PIK (R.). – High-temperature furnace under ultra-high vacuum. [patent FR 2973105(A1)] (2011).
ZIMMERMANN (L.). – Furnace and process for extraction by diffusion of helium present in minerals. [patent no. 1 000185860] (2013).
Directory
Manufacturers – Producers – Suppliers (non-exhaustive list)
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Ultra-high vacuum equipment (CF flange, translation and electrical bushing, copper gasket, etc.)
Adixen Vacuum Products SAS (Pfeiffer) http://www.pfeiffer-vacuum.com
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