Injection by Programmed Temperature Vaporization Injection (PTV) of Gaseous Samples for Gas Chromatography - Atomic Emission Spectrometry (GC-AED)

Programmed Temperature Vaporization Injection (PTV) in the Analysis by Gas Chromatography-Mass Spectrometry (GC-MS) of the Constituents of Landfill Gas

“…Sulfur compounds found in landfill gas in previous work [12] by GC with sulfur selective (181 nm emission line) atomic emission detection were identified by PTV-GC-ITD/MS. Dimethyl sulfide, dimethyl disulfide, and 3-thiDownloaded by [Florida International University] at 18:34 04 January 2015…”

“…A large volume of each gas sample (up to 600 ml) was passed through a sorbent tube containing Tenax GC which was then heated rapidly to transfer the analytes onto the GC column. The valving configuration linking the PTV to the chromatographic column has been developed further from previous work [12] ensuring all sample gas passes through the sorbent trap, unlike in the single valve method where escape onto the column is possible. This procedure eliminates any effect of increasing pressure and also contamination of the GC column during loading of the gas sample ( Figure 1).…”

“…We have previously detected a range of sulfur containing compounds in household landfill gas using PTV-GC-AED [12]. These, and others have now been identified by using both retention time of standards and library matching by PTV-GC-ITDMS.…”