October 2010

Laboratory Analyzers

Consider using alternative carrier gases for petrochemical analysis

Advantages include higher efficiency and shorter analysis times

Jacksier, T., Air Liquide; Duan, J., Air Liquide, Delaware Research and Technology Center

Helium (He), widely used as carrier gas for gas chromatography (GC), is a nonrenewable resource extracted from natural gas. There has been sound evidence over the past few years of rising costs and shortages, both domestically and internationally, owing to issues with the availability of He. It is likely that the He supply chain issues will continue in the near term. It is, therefore, an incentive for chromatographers to consider alternative carrier gases. Introduction. Quantitative and qualitative data for petrochemical processes are routinely obtained by gas chromatographic analysis. Chromatography effectiveness depends partially on the ability of the carrier gas to transport various comp

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