"Selectivity: When, Where, and How to Use It!" by Diane Turner at LECO’S GC×GC Workshop & Symposium

At LECO’S GC×GC Workshop & Symposium, Dr. Diane Turner gave a talk about "Selectivity: Where, When, and How to Use It!" The talk covers techniques for sample analysis, selectivity in choosing the right technical setup (column choice, inlet parameters etc.), and also data analysis optimisation.

Dr. Diane Turner is Senior Consultant & Director, Anthias Consulting Ltd., Consultant, The Open University, and President-Elect, Analytical Division, RSC.

Medical Diagnosis using Breath Analysis and GC×GC-TOFMS: Optimizing Data for Accurate Treatment

Digital blue human with highlighted red lungs on dark blue background. At our ASMS breakfast seminars, Jean-François (Jef) Focant, Head of the Department of Chemistry and Director of the Organic and Biological Analytical Chemistry group at the University of Liège, Belgium, spoke about using our Pegasus® BT 4D and Pegasus® GC-HRT 4D for GC×GC-TOFMS on the breath of asthma patients to improve asthma treatment. Before diving into the blood and sputum, Jef first educated us on the importance of optimizing your data.

“GC×GC Separation” by Alan Griffiths at London Metabolomics Meeting of the RSC

Meeting of the London Metabolomics Network and South East Region Analytical Division of the Royal Society of Chemistry at Burlington House, London

Alan Griffiths speaks about the top of the range technique for GC×GC Separation provided by LECO. The video has been recorded at the meeting of the London Metabolomics Network and South East Region Analytical Division of the Royal Society of Chemistry at Burlington House, London. The video will be uploaded to SepScience.com for our recent PEGASUS® campaign.

WATCH THE VIDEO HERE…

Of Fireworks and Tourism: GC×GC-HRMS Analysis of Summer Impacts on Lake Michigan Water Quality

Fireworks are a staple of America’s Independence Day celebrations. It is estimated that 16,000 fireworks displays are held in the United States each year and American consumers will spend more than $1 billion in firework sales to mark the holiday! Beyond a big bang and bright lights, how do these fireworks affect the environmental world around them? LECO’s world headquarters are located in Saint Joseph, Michigan, a beach town on Lake Michigan where fireworks are a prominent backdrop to the 4th of July celebration. Last summer, our applications lab thought it would be a worthwhile and interesting experiment to test the water surrounding the firework launch spot to explore if there were any short-term environmental impacts. The influx of tourists to the Lake Michigan beaches during the holiday is sure to contribute chemicals from personal care products (sunscreen and insect repellent) to the water as well. Evaluating these potential contaminants surrounding the July 4th holiday was the objective of this study.

The analysis was conducted by taking water samples from three different places along the shoreline; the fireworks launch location off the pier, as well as two local beaches close to the launch site. This was done on July 2nd as well as on July 4th (an hour after the fireworks show) to provide an accurate measurement. LECO’s Pegasus HRT+ 4D system was used to analyse the water samples, which offers comprehensive two-dimensional gas chromatography coupled to high-resolution time-of-flight mass spectrometry (GC×GC-HRTOFMS). GC×GC-HRTOFMS proved a powerful tool for exploration as it provided a full non-targeted analysis of the water samples before and after the fireworks show, clearly demonstrating the chemical differences between the two. GC×GC-HRTOFMS was also able to pinpoint contributions to the environmental pollution that occurred as a result of these pyrotechnic displays and the increased human traffic near the water sampling sites.

So what happened to the water quality of Lake Michigan from the increased tourism and fireworks? The results may surprise you…

Read the poster here to find out.