Discovering DDT: How GCxGC is uncovering an environmental disaster

April 23, 2021

Sunset over the Pacific Ocean, in Seal Beach, California.For years, environmentalists have known about the contamination of DDT in the ocean waters off the California coast. Montrose Chemical Corporation, the largest producer of DDT in the United States from 1947 until 1982, was infamously dumping chemical waste from their manufacturing process into the sewer system, contaminating the Palos Verde Shelf and eventually requiring the area to be designated as a Superfund site in an attempt to clean up the environmental damage. However, the known DDT contamination did not seem to be enough to explain the abnormally high cancer rates in the local sea lions.

Chasing a hunch, David Valentine, a professor of geochemistry and microbiology at UC Santa Barbara, dove deeper.

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LECO Analytical Applications Poster Competition

April 9, 2021

The LECO Analytical Applications Poster Competition (LA2PC) 2020-2021 recently wrapped up, showcasing 15 incredible posters highlighting the applications of LECO instruments in our users' work and research. A hearty congratulations goes to our winnersKarl Hornsby, Martin J. Taylor, Vasiliki Skoulou | University of Hull, Peter Hurst | Biorenewables Development Centre – BDC, and Simon Walker | Jesmond Engineering Limited. Their poster, "Pretreating lignocellulosic biomass wastes for the next generation of solid fuels" is a fantastic look into the search for new solid fuels.

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Using GCxGC to see MOSH and MOAH

April 1, 2021

LECO Pegasus BT 4DFood contamination by mineral oil hydrocarbons (MOH), which is usually separated into the subclasses of MOSH (Mineral Oil Saturated Hydrocarbons) and MOAH (Mineral Oil Aromatic Hydrocarbons), is a growing concern across the EU and the world. In 2012, the European Food Safety Authority flagged them as a potential health concern, and the increasing research since then has only been expanding our understanding of these hydrocarbons. However, the two main analytical methods suggested to quantify these substances, either an off-line method consisting of a solid phase extraction (SPE) followed by a GC-FID analysis or an on-line, LC-GC-FID method, both can result in inaccuracies and leads to challenges in the end results. Some of these inaccuracies are due to the lack of a strong and robust confirmatory method. However, a GCxGC-TOFMS system, like LECO's Pegasus® BT 4D can help unveil the complexity of contaminated food samples. It has also been suggested by the EFSA to be used as a confirmatory tool in case of uncertain results from other standard methods.

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Thermogravimetrically Testing Biomass

March 19, 2021

200630_TGA801_450pxSo many factors go into the quality and characterization of plants and biomass, but many thermogravimetric analyses take so much time. Drying, ashing, and weighing multiple samples takes effort and care just to control for atmospheric effects, much less to actually get precise results that can then be used to analyze the quality and structure of the plants. LECO's TGA801 is an automated thermogravimetric analyzer designed to take the time out of the testing.

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Pittcon 2021: Now More Than Ever

February 19, 2021

Despite the struggles of the past year, Pittcon has chosen to host their annual expo on schedule via a virtual venue. The premier conference on analytical chemistry and scientific instrumentation is needed now more than ever. In an era when scientific breakthroughs can lead to life-saving developments, collaboration and networking among experts is vital. LECO is proud to be joining the first-ever fully-digital Pittcon expo.

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ChromaTOF® Tile for GCxGC Analyses

January 29, 2021

LECO has released a revolutionary new data analysis software for GCxGC data: ChromaTOF Tile. This software provides an industry-first data comparison tool that identifies statistically significant differences between classes of samples, reducing days-to- weeks of work down to hours, or even minutes. Based on Dr. Robert Synovec’s tile-based Fisher ratio analysis, ChromaTOF Tile partitions the data into a set of regions (tiles) and compares regionalized data. This allows it to disregard normal variances of alignment shifts to focus on where the actual differences are, so users can stop looking at their data and start actually using it.

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Deciphering Complex Tomatoes and Pesticide Residues with GCxGC-TOFMS

January 26, 2021

Tomatoes are the second-most important vegetable crop in the world (arguments over whether or not it should be called a fruit or a vegetable aside!), and thus it is critically important that tomato yields are kept high. Pesticides are the easiest way to control populations that might destroy crops, but we must make sure that the resulting tomatoes are not contaminated. With GCxGC-TOFMS, recognizing and identifying pesticide residue in tomatoes is easier than ever.

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Fit 4 Fall “Stay Safe” Virtual 5K Raises over $6,000 for Local Charities

December 17, 2020

Fit 4 Fall 5K 2020 170x170 2020Over 300 racers participated in this year’s Fit 4 Fall “Stay Safe” Virtual 5K run/walk event held in October. Despite all of the COVID-19 changes and precautions, a new record was set for individual donations, and over $3,000 was donated to each of three chosen charities: Caring Circle, LOGAN Autism Learning Center of Southwest Michigan, and The Great Lakes Chapter of the Alzheimer’s Association.

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The Difference between Frankincense and Myrrh

December 16, 2020

It's that time of year again, when holiday songs play 24/7 on the radio and people start wondering what, exactly, frankincense and myrrh are and why they make good gifts. LECO placed these two oils in a Pegasus® BT 4D to see the difference.

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Metallographic Gift-Giving

December 2, 2020

Blue gift box with golden ribbon isolated on whiteIt's the holiday season and gift-giving is running rampant. What do you get for the metallurgist who has everything?

Microstructural analysis consumables!

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