How to Improve Your Metallographic Mounts

Bakelite, Lucite, epoxy, or acrylic? Hot or cold? Compression or castable? With all of the options available for mounting materials, it can be difficult to know which one is the best option for your sample or why it even matters. However, your choice of mounting material is important, and it can affect the final quality of your prepared sample.

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Topics: MX Series, Mounting, Metallographic Science

Automated Analysis with bilacon® and the TGA801

Running and maintaining a full analytical laboratory can be more cost than a company can afford, but what other options are there for a small business looking for quality control and regulatory compliance? Independent testing and consulting laboratories groups such as the Tentamus Group, can fill that gap. One of its laboratories, bilacon, specializes in the safety of food, feed, food supplements, and cosmetics. 

In a recent interview with eFOOD-Lab International, Benjamin Ende, a state-certified food chemist with bilacon, talked about the benefits of LECO's TGA801 thermogravimetric analyzer in his lab's day-to-day operations.

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Topics: TGA801, Organic

Discovering DDT: How GCxGC is uncovering an environmental disaster

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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Topics: Separation Science Mass Spectrometry, Separation Science, Mass Spectrometry, Pegasus GC-HRT 4D, GCxGC, Environmental

LECO Analytical Applications Poster Competition

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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Topics: Elemental Analysis, Separation Science, Events, Poster, Metallographic Science

LECO adds Hydrogen to the 828 Series

LECO announces the addition of hydrogen analysis capabilities to the 828 series, which will transform the way users determine carbon, hydrogen, and nitrogen in a variety of petrochemical and other organic materials. The CHN828 maintains the core capabilities and performance of previous generations of LECO macro combustion instruments while possessing key improvements in throughput, uptime, and reliability. By incorporating state-of-the-art hardware and an on-board touch-screen software platform with rapid analysis times, the CHN828 operates at a low cost-per-analysis and allows users to easily handle the most demanding sample applications.

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Topics: 832 Series, 828 Series, Organic

Using GCxGC to see MOSH and MOAH

Food 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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Topics: ChromaTOF, Separation Science Mass Spectrometry, Separation Science, Pegasus BT 4D, Mass Spectrometry

Thermogravimetrically Testing Biomass

So 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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Topics: TGA801, Organic

The Science of Gas Chromatography

 

What is Gas Chromatography - Mass Spectrometry (GC-MS)?

Gas Chromatography – Mass Spectrometry (GC-MS, GCMS or GC/MS) is an analytical method that is used to determine the composition of substances within a test sample. As the name describes, the system is composed of a gas chromatograph to separate the substances (analytes) and a mass spectrometer to identify these analytes. This is the gold standard for analysis in many fields such as forensics or petrochemical studies as GC-MS allows for the unequivocal identification of substances.

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GC, GCxGC, GC-MS, HRMS... What is Separation Science?

 

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Environmental Safety with TOF-MS

Environmental Safety is more than just a pipe dream, it is the survival of the human race. We only have this one beautiful planet and the damage we do to it will resonate past our grandchildren’s generation. Just like the wings of a butterfly in South Africa can cause a storm in China, so too can an environmental spill resonate around the globe.

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