Environmental Testing – Webinars

Take advantage of our expertise in various topics and techniques related to environmental testing.

 Past Webinars

  • Capillary GC Column Selection – An optimized chromatographic separation begins with the column. In order, selection of the proper capillary column for any application is based four distinct parameters: the stationary phase, the column I.D., the film thickness, and the column length. Each parameter, and how it affects method performance, is discussed.

  • GC Troubleshooting – Discusses issues which can affect the quality of your chromatographic analysis, such as selection of gas purifiers, injection technique, and liner type. Common problems in GC analysis are also covered.

  • Principles of Fast GC – Shorter analysis times allow increased sample throughput, which translates to the completion of more samples per shift. However, any decrease in analysis time must not diminish the resolution necessary to adequately resolve peaks of interest, or to identify specific elution patterns. This webinar explains how to apply the Principles of Fast GC to any application, using existing instrumentation.

  • Purge & Trap GC for Volatiles – Covers the basics of what adsorbents and traps do, how to select the proper trap for each application, the Principles of Fast GC for volatiles, and how to employ a sound troubleshooting strategy for use when things go wrong.

  • Fenceline Monitoring: EPA 325B – Benzene emissions are the focus of this method, but other VOC’s can be monitored using the same sampling tube. Air samples are collected using thermal desorption tubes that are deployed along the fenceline of a refinery, and remain deployed for 14 days. After sampling, the tubes are sent to a laboratory where they’re analyzed by thermal desorption gas chromatography.

  • Thermal Desorption Adsorbent Selection – An overview of adsorbents suitable for thermal desorption (TD), and the factors to consider when selecting an adsorbent. Includes details about adsorbent mesh sizes, surface area, and temperature limits; and how these parameters influence the sample collection process. Also covers the use of single and multi-bed tubes, as well as recommendations for sample volumes and sampling flow rates to assist in method development.