Red wine could help to protect against oral cavities, according to research published in the Journal of Agricultural and Food Chemistry.1 The team used ultrahigh-pressure liquid chromatography tandem mass spectrometry together with electrospray ionization (UHPLC–ESI–MS–MS) to analyze phenolic compounds found in the sampled red wine.
Today?s plenary is an award lecture by Richard M. Caprioli of Vanderbilt University. Caprioli is the recipient of the 2014 ASMS Award for a Distinguished Contribution in Mass Spectrometry for the development of matrix-assisted laser desorption ionization (MALDI) imaging mass spectrometry and its application to molecular mapping of tissues in biology and medicine. His award lecture today will be held in Exhibit Hall AB, at 4:45 pm.
This article provides insight into the basic principles of the MALS technique, and how it can be applied to the detection and characterization of branching in polymers.
Matthew Crowe, of Dow Chemical (Midland Michigan), will preside over six Monday morning oral sessions on ?Emerging Environmental Contaminants.? The sessions will take place in Exhibit Hall AB between 8:30 a.m. and 10:30 a.m.
Kate Mosford of The Column spoke to Giorgia Purcaro of the Department of Food Science at the University of Udine, Italy, and Chiara Cordero of the Department of Drug Science and Technology at the University of Turin, Italy, about the sensory evaluation of olive oil and the benefits of a comprehensive approach.
Click here to view the complete E-Separation Solutions newsletter from June 5, 2014.
DNA can be analyzed by many techniques, including electrophoretic techniques such as gel, capillary, and microchip electrophoresis, and nanochannel methods in which DNA is labeled and stretched. This interview with Kevin Dorfman, an Associate Professor in the Department of Chemical Engineering and Materials Science at the University of Minnesota in Minneapolis, Minnesota, discusses his research with polymer physics and microfluidic and nanofluidic technologies.
Click the title above to open The Column June 05, 2014 North American issue, Volume 10, Number 10, in an interactive PDF format.
Click the title above to open The Column June 05, 2014 Europe & Asia issue, Volume 10, Number 10, in an interactive PDF format.
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 the VTT Technical Research Centre of Finland discusses the vast range of sample matrices and gives advice on best practices.
The chemistry of radicals - which is quite different from that of even-electron species - opens up new analytical capabilities.
The pyrolysis–GC–MS method enables direct analysis of solid or liquid polymers without sample pretreatment, as illustrated here for various materials, including a dental filling material and a car wrapping foil.
An analytical method based on liquid chromatography coupled to tandem mass spectrometry (LC–MS–MS) has been developed for the determination of acrylamide in water. To obtain clean extracts and low detection limits, an activated carbon cartridge was investigated for use in solid-phase extraction (SPE), and extraction conditions such as desorption solvent and elution volume were optimized by a series of experiments. High recoveries (99.1–99.8%) were obtained using the activated carbon solid-phase extraction cartridges with methanol as the eluent. This method could be applied to the quantification of acrylamide in environmental water samples.
Sample preparation has often been viewed as the bottleneck in analytical procedures. Surveys have shown that time is typically the most frequent problem area for sample preparation procedures. While newly developed extraction techniques address time, modern chromatography advances are also moving towards faster separations. Based on these considerations, what is high-throughput sample preparation? Do modern extraction methods adequately address the issue of time? How can we address the analytical need for speed?
This review provides an updated overview of the theory behind the success of SPP technology, trends, benefits, and limitations. It also summarizes the latest developments of sub-2-?m SPPs and instrumental constraints associated with their use.
This fast, sensitive method provides accurate quantitation.
UV detectors are the most common LC detector, and perhaps the most reliable ones. But they are not without problems.
Some attributes of large molecules make them behave differently from small molecules in reversed-phase separations.
What brought this scientist to where he is? And where he is going next?
Click the title above to open the LCGC Asia Pacific June 2014 regular issue, Vol 17, No 2, in an interactive PDF format.
Click the title above to open the LCGC Europe June 2014 regular issue, Vol 27 No 6, in an interactive PDF format.
Click the title above to open the LCGC North America June 2014 regular issue, Vol 32 No 6, in an interactive PDF format.
Click the title above to open the LCGC North America June 2014 Application Notebook, Vol 32 No s6, in an interactive PDF format.
Malvern Instruments Secures ?3 million from UK Government
10 common GC mistakes - are you guilty of making them?
Scientists at the University of Cambridge (Cambridge, UK) have reconstructed the early conditions of the Earth?s oceans to find that spontaneous chemical reactions could have generated the first biological molecules, before the evolution of organisms or the existence of enzymes.1 The study published in the journal Molecular Systems Biology presents data collected from liquid chromatography?triple quadrupole mass spectrometry (LC–QTOF–MS) suggesting that reactions central to our core metabolism could have spontaneously occurred.
It's just a silica support with a C18 bonded on, surely there can't be much difference between them? Wrong.
Over the last 30 years, the occurrence of head and neck cancer in Spain has been increasing, and now accounts for between 5–10% of malignant tumours diagnosed each year.1 In a new study published in the journal Chromatographia, solid-phase microextraction (SPME) with gas chromatography coupled to mass spectrometry (GC–MS) has been performed to identify two potential biomarkers of epidermoid laryngeal cancer, that could be used in non-invasive diagnostic testing.
The latest newsletter from May 29.
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