Barrier Discharge Ionization Detection: A Novel, Universal Detector for Gas Chromatography and its Applications for Hydrocarbon Processing

Monday, March 08, 2021: 2:40 PM - 3:15 PM

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Description

Barrier discharge ionization detection for gas chromatography (GC-BID) is a novel universal detector capable of detection of nearly any volatile analyte with the exception of helium and neon. Traditional analyses of hydrocarbons and associated gases are commonly carried out by flame ionization detection (FID) and thermal conductivity detection (TCD), with other detectors available for more specific detection. Here we will explore the use of a Shimadzu GC-BID for detection of moisture (water) in common petrochemical gas streams and trace contaminants in hydrogen streams. Analysis of moisture in hydrocarbon gases and liquids is commonly carried out by Karl Fischer titration, which can be a labor-intensive and error-prone process. However, it is critical to understand the moisture content of hydrocarbon mixtures as it will affect their processing characteristics and utility as fuels. GC-BID coupled with an ionic liquids column has proven to be an easy and reliable method of separating and quantifying trace (ppm) levels of water in those samples. A common product of petroleum and natural gas refining is hydrogen gas, formed as a result of oxidation of hydrocarbons and separation of hydrogen gas. This hydrogen gas is often used further in the refining process, as an industrial or fuel gas, or as a reactant for production of other chemicals, for example ammonia. Understanding trace contaminants in hydrogen gas is critical as they may foul catalysts or fuel cells. Using GC-BID, we demonstrate here a simplified, one-detector system for the simultaneous detection of trace compounds in hydrogen gas, whereas traditional detection requires multiple columns and detectors.

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Track(s)

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  Energy

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Additional Info

Keywords: Please select up to 4 keywords ONLY:
Chromatography - Other,GC Columns,Fuels/Petrochemical