Low Thermal Mass Gas Chromatography: Principles and Applications

Luong, Jim; Gras, Ronda; Mustacich, Robert V.; Cortes, Hernan J.

doi:10.1093/chromsci/44.5.253

Cited by 48 publications

(23 citation statements)

References 8 publications

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“…This mode of chromatography should be only employed when resolution is not compromised (Luong and Gras, 2006). This mode of chromatography should be only employed when resolution is not compromised (Luong and Gras, 2006).…”

Section: Gas Chromatography and Supercritical Fluid Chromatographymentioning

confidence: 99%

Green Foodomics

et al. 2013

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Section: Gas Chromatography and Supercritical Fluid Chromatographymentioning

confidence: 99%

Green Foodomics

et al. 2013

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“…This led to the recent commercialization of a radically new disruptive technology to achieve ultrafast temperature programming and unprecedented cool down time. In the context of GC operation, the terminology LTM is used to qualitatively describe GC column assemblies including both heating and temperature sensing means which have a very small total mass compared to convection-heated GC designs [17].…”

Section: Low Thermal Mass (Ltm) Gc (Ltmgc)mentioning

confidence: 99%

Determination of short‐chain branching content in polyethylene by pyrolysis comprehensive multidimensional gas chromatography using low thermal mass column technology

Eckerle¹,

Pursch²,

Cortes³

et al. 2008

J of Separation Science

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A research effort was undertaken to utilize the pyrolysis process to create fragments of polyethylene that could be indicative of branching, and allow quantitiation of said short-chain branches by pyrolysis comprehensive 2-D GC (Py-GC x GC). Several strategies for sample introduction and pyrolysis such as the in-column pyrolysis device and the programmed temperature vaporizer (PTV) were studied. The chromatographic separations were executed using low-thermal mass (LTM) comprehensive 2-D GC (GC x GC). A series of polyethylene-co-hexene samples were analyzed and a linear correlation of 1-hexene content with branching peak ratio was found. Correlation coefficients were determined as 0.97 for the measurements performed.

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“…LTM-GC can be employed, not only to eliminate this constraint, but to enhance analytical performance. The principle of LTM-GC technology has been discussed in detail in previous publications [26,27].…”

Section: -D Gc With Capillary Flow Technologymentioning

confidence: 99%

Multidimensional gas chromatography with capillary flow technology and LTM‐GC

Luong¹,

Gras²,

Yang³

et al. 2008

J of Separation Science

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2-D GC is a logical and cost effective extension to 1-D GC for improving the separation resolution, selectivity, and peak capacity of an analytical system. The advent of electronic pressure control systems that are accurate to the third decimal place, combined with recently innovated chromatographic devices such as capillary flow technology, has eliminated many deficiencies encountered in current conventional 2-D GC by making the technique reliable and simple to implement in both production and research analytical facilities. Low thermal mass GC (LTM-GC) was successfully integrated with capillary flow technology to further enhance overall 2-D GC chromatographic system performance by providing not only faster throughput via rapid heating and cooling, but independent temperature control for each dimension to maximize separation power. As an example, despite the enhanced peak capacity obtained from conventional 2-D GC, alkyl naphthalene isomers such as 2,3-dimethyl and 1,4-dimethyl naphthalene coeluted. These two critical compounds were well resolved (R = 5.2) using 2-D GC with LTM-GC with a similar analytical time. This paper demonstrates the benefits of combining capillary flow technology with LTM-GC to provide major enhancements to conventional 2-D GC. The synergy of these techniques is highlighted with practical industrial applications.

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Low Thermal Mass Gas Chromatography: Principles and Applications

Cited by 48 publications

References 8 publications

Green Foodomics

Green Foodomics

Determination of short‐chain branching content in polyethylene by pyrolysis comprehensive multidimensional gas chromatography using low thermal mass column technology

Multidimensional gas chromatography with capillary flow technology and LTM‐GC

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