Posters & Presentations

Improve Your Linear Alpha Olefins (LAO) Impurity Analysis with Restek’s New Rxi-LAO GC Columns

05 Nov 2025

As worldwide demand for polyethylene increases, so does the pressure on labs performing linear alpha olefins (LAO) impurity analysis. Restek’s Rxi-LAO columns are the first GC columns specifically applicated for the impurity analysis of LAOs. The unique selectivity provides high resolution, separating impurities from peaks of interest, such as 1-hexene and 1-octene. Herein the Rxi-LAO column was evaluated for selectivity and resolution of peaks of interest. A stringent quality control test was also developed to ensure column robustness and column-to-column reproducibility. As a result, the Rxi-LAO demonstrates high selectivity, resolution, and robustness to meet the high throughput needs of labs running the LAO analysis. Two column dimensions are available, with options for one-column and two-column configurations. The one-column method provides substantial benefits compared to two-column methods, including a simpler setup, increased instrument uptime, and higher sample throughput. Rxi-LAO columns are also fully supported by our Pro EZGC chromatogram modeler, allowing labs to optimize their LAO analysis quickly and easily.

Authors

  • Corby Hilliard

    Corby Hilliard started his Restek career in the Quality Assurance department where he spent his first seven years as a QA analyst and worked his way up to a senior QA analyst. He then moved on to the Innovations department in 2009 as a GC Solutions Advanced Scientist. His experience is predominately in gas chromatography (GC) using various detectors and mass spectrometry as well as troubleshooting and method development. His primary work for Restek is generating product application data, using new and existing products in food safety, petrochemical, environmental, and the GC accessories line. He also is involved with quality and R&D as well as new product development.

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