Date: 28 Sep, 2023
Time: 15.00 (Swedish time)
Speaker: Sergei Leikin, PhD & Autumn Philips
This webinar will cover: 
Running an ICP analysis should be a pleasant and enjoyable experience. However, in the real world, even simple issues can be challenging, time-consuming to address, and frustrating for every ICP analyst, regardless of the experience. Join us for the first webinar of our Partner Series: A Spectrum of Dialogue for step-by-step practical guidance on how to address the most common problems quickly and efficiently.

Date: 31 Okt, 2023
Time: 10.00 (Swedish time)
Speaker: Jaap de Zeeuw
This webinar will cover: 
There is a number of ways that the analysis time can be reduced. All depends on how well the components are separated in the present application. Most easy is to trade in some resolution for speed using higher gas velocities or using a shorter column. If the exact separation must be maintained, a choice has to be made between using hydrogen as carrier gas, or use a smaller ID capillary column (or a combination). Important is that in the new method, the same chromatogram (and peak elution order)must be obtained. Using the EZGC method translator, you can simply calculate the oven program you need for that. Also the ProEZGC chromatogram modeler, you can see the impact of any changed parameter, just using your computer.

Date: 14 Nov, 2023
Time: 10.00 (Swedish time)
Speaker: Jaap de Zeeuw
This webinar will cover: 
Fast gas chromatography (GC) using mass spectrometry (MS) has always been challenging as we have to use a column with sufficient restriction under vacuum-outlet conditions. Short 0.10mm columns will work, but are practically challenging to work with in regards to injection and capacity. In 2001 a new concept was presented for speeding up GC-MS analysis using short 0.53mm capillary columns (directly connected at the MS inlet) connected to a restriction column at the inlet, enabling a high vacuum inside the 0.53mm analytical column. Technique is known as LPGC (Low Pressure Gas Chromatography) or sometimes called “Vacuum GC”. Under the conditions created, very fast separations were performed as the optimal carrier gas velocity is a function of the actual pressure inside the capillary. Typically 3x shorter run times are obtained. We trade here some efficiency in for speed and robustness. Since a MS detector is used, no need full chromatographic separation is required. This technique was immediately adopted by Lehotay around 2003 for fast pesticide screening in Quechers extracts of food samples. Together with Lehotay, an optimized pre-assembled robust column for LPGC for fastest possible pesticide screening was developed and will be discussed in detail. In this tutorial the basics of LPGC are discussed and the impact it has on the chromatography of for example, pesticides in food. The technique can be applied for basically all GC/MS analysis, providing there are no isobars that need to be separated having over 100.000 theoretical plates.