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Showing 1 to 3 of 3 for “"PMCH"”.
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Development and Evaluation of a Permeation Plug Release Vessel (PPRV) for the Release of Perfluoromethylcyclohexane (PMCH) in Underground Mine Tracer Gas Studies
… paper introduces a passive release method for PMCH. Details about the development of the permeation plug release vessel (PPRV) from creating a GC calibration curve for vapor PMCH to the final field evaluation are presented. The following study successfully developed a mine-scale PPRV. The PPRV …
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A detailed justification for the selection of a novel mine tracer gas and development of protocols for GC-ECD analysis of SPME sampling in static and turbulent conditions for assessment of underground mine ventilation systems
… Experimentation with perfluoromethylcyclohexane (PMCH) and SF6 allowed for ideal chromatographic results. PMCH is a favorable selection for a novel tracer to work in tandem with SF6 due to its chemical stability, similar physical properties and detection limits to SF6, and its ability to be …
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Design and Qualification of a Coded Aperture Cycloidal Mass Spectrometer to Detect Perfluorocarbon Tracer Molecules for Environmental Applications
… mass range of m/q 29 – 502. Additionally, using PMCH (C7F14) as the test molecule, the PFC-CAMMS instrument achieved a detection limit of 20 ppbv (parts per billion by volume, 10-9) with a response time of less than 5 s from sample introduction using a capillary inlet. There is no evidence of a …