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Top Story: LCGC TV: Sample Preparation for Chromatographic Methods in Metabolomics
Advances in mass spectrometry instrumentation have opened up the field of metabolomics, but there are still issues with non-standardized sampling and sample preparation methods. Tuulia Hyötyläinen from SyMMyS in Denmark discusses sample preparation techniques performed in metabolomics, and gives a brief overview of what to consider. |
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| Need HPLC Troubleshooting Help? |
The CHROMacademy interactive HPLC Troubleshooter, sponsored by Thermo Scientific, was designed with busy chromatographers in mind. In 3 simple steps ChromAcademy can help you overcome your instrument, separation and quantitation issues. It’s completely free — so if you haven't tried our troubleshooter before you're in for a surprise!  Learn More
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LC Troubleshooting: How Much Retention Time Variation is Normal?
Small changes in retention time of a LC method are normal. At what point is a problem suggested? Retention time shifts can be frustrating when you can't figure out if a shift is something you caused or if there is another reason for it. John Dolan explains more. |
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| Tune in to LCGC TV |
LCGC TV brings you insights from leading analytical scientists, updates on new research and methods, as well as best practices and practical advice that you can apply in your lab. View the latest videos at  www.chromatographyonline.com/lcgctv |
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Photo Credit: pearleye/Getty Images |
Expanding the Understanding of Mineral Oil Analysis
The Column spoke to Laura Barp of the University of Udine about her research into mineral oil migration in food packaging, the potential impact on human health, and the importance of pressurized-liquid extraction (PLE) in this project. |
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Photo Credit: Marrio31/Getty Images | Tips & Tricks: How to Test GPC/SEC Columns
Gel permeation chromatography/size-exclusion chromatography (GPC/SEC) columns are at the heart of a GPC/SEC system. Therefore, an easy test to determine the plate count, the peak symmetry, and the resolution of the columns is an essential tool. |
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Photo Credit: Frank Rossoto Stocktrek/Getty Images | TOF-MS Analysis of Synthetic Cathinones without Sample Preparation
Direct sample analysis coupled to high-resolution time-of-flight mass spectrometry (TOF-MS) is discussed as a potential method for analyzing synthetic cathinones, especially for qualitative analysis, because it does not require potentially tedious sample preparation. |
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Photo Credit: Westend61/Getty Images | Insight into Diet of Neanderthals by GC–MS Analysis of Faeces
Scientists from the Massachusetts Institute of Technology (MIT) in Massachusetts, USA, and University of La Laguna in Spain, have performed GC–MS analysis of Neanderthal faeces to demonstrate that Neanderthals could have eaten fruit and vegetables and were not necessarily dependent on a meat diet. |
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