Jul 01, 2015GC paired with a negative ion chemical ionization mass spectrometer (NCI-MS) may provide an alternative analysis technique for SF 6 detection in terms of both high sensitivity and selectivity. This paper details a procedure and an experimental methodology for the ultra-trace level detection of SF 6 in air utilizing gas chromatography with negative ion chemical ionization mass spectrometry (GC-NCI-MS).
[email protected]Sulfur hexafluoride or sulphur hexafluoride is an extremely potent and persistent greenhouse gas that is primarily utilized as an electrical insulator and arc suppressant. It is inorganic, colorless, odorless, non-flammable, and non-toxic. SF 6 has an octahedral geometry, consisting of six fluorine atoms attached to a central sulfur atom. It is a hypervalent molecule. Typical for a nonpolar gas, SF 6 is poorly soluble in water but quite soluble in nonpolar organic solvents. It has a density of 6
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