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The 9th International Symposium on Packed Column SFC (SFC 2015) was held in Philadelphia, Pennsylvania, USA, on 22–24 July 2015. Selected highlights of both the oral and poster SFC 2015 programmes are reviewed in this synopsis.

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The Norwegian Institute of Public Health conducted a study into the drug use habits of nightclubbers and arrested criminals in Oslo, Norway. The study used UHPLC–MS–MS to analyze the drug-use profiles of nightclubbers and criminals arrested while under the influence of drugs to develop an understanding of drug use patterns in these groups.

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Research into honeybee venom is being performed to identify active proteins acting as allergens and toxins. Researchers combined LC–MALDI-TOF/TOF-MS–MS, LC–ESI-QTOF-MS–MS, and a combinatorial peptide ligand library enrichment method to detect 269 proteins.

A team of researchers from China and the USA has developed a liquid chromatography coupled to tandem mass spectrometry (LC–MS–MS) method for quantifying methylergonovine (ME), a semi-synthetic ergot alkaloid used for the treatment and prevention of postpartum haemorrhage (PPH), in human plasma.

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Gel permeation/size-exclusion chromatography (GPC/SEC) is the standard method for separating samples by molecular size and determining molar mass distributions. However, GPC/SEC instruments can also be used to investigate porous materials and to learn more about pore size distributions, as a powerful alternative to nitrogen gas (N2) adsorption or mercury (Hg) intrusion porosimetry.

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Contaminants in surface water and drinking water supplies arising from pharmaceutical and personal care product use as well as other compound sources pose a difficult challenge for analytical chemists. Thomas Letzel from the Technical University of Munich in Germany, spoke to The Column to discuss collaborative research taking place in Europe to address contaminants of emerging concern in water analysis.

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Researchers from Imperial College London and the University of Aberdeen have identified disease markers for Human African Trypanosomiasis (HAT), commonly known as “sleeping sickness”. Using reversed-phase ultrahigh‑performance liquid chromatography coupled to mass spectrometry (UHPLC–MS) and proton nuclear magnetic resonance (1H NMR) spectroscopy researchers found 53 discriminatory metabolite markers.

Recently several states have legalized recreational and medical marijuana. This has created a confusing set of circumstances due to legalization at the state level, but cannabis is still an illegal schedule 1 drug at the federal level. This confusion also affects the development of analytical methods because there are no clear guidelines available to laboratories. This whitepaper will discuss the following topics: • Overview of state analytical requirements • Discussion of analytical method development for cannabinoids and related compounds of interest • Discussion of method performance

UV technologies are being increasingly used in water purification systems, taking advantage of the germicidal properties of UV and also its effect in reducing organic contaminants. This paper discusses the effectiveness of using UV technologies along a water purification chain and the parameters and configurations to be considered when selecting UV lamps for water purification systems.

Volatile organic compounds (VOCs) are carbon containing compounds that evaporate easily at normal temperatures. They are typically generated from petroleum products, plastics, paints and solvents,. Other sources are the disinfecting agents used to control microbial contaminants in drinking water. Disinfecting agents react with naturally occurring organic matter in the source water to produce VOCs known as trihalomethanes. When VOCs are spilled or improperly disposed of a portion will evaporate, but some will soak into the ground and eventually end up in drinking water supplies

Ion chromatography (IC) has been recognized as one of the most competitive techniques for trace analysis, based on results from continuing research and development work into different types of instrumentation. Ultratrace analysis requires the use of extremely clean reagents, including water. The ionic content of water was monitored by IC along a water purification chain, from tap water to ultrapure water. This study shows that ultrapure water from a Milli-Q system is suitable for trace analysis by IC.

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Semivolatile calibrations on this column dimension often range from 1.0 to over 100 ng/µL; however, a 0.25 mm ID column usually experiences peak overload as the mass on column approaches 10 ng. As shown in Figure 1, isobars that elute close together-such as benzo[b]fluoranthene and benzo[k]fluoranthene-quickly become unquantifiable as mass on column increases. Under split conditions, the resolution requirement (50% valley) is met for all nine calibration standards, and the peak apices shift less than 0.04 min, indicating only minor peak overload. Conversely, under splitless conditions, the three highest concentration calibration standards fail the resolution criterion. The peak fronting and resulting overlap from column overload make it impossible to generate a linear calibration including these points. Additionally, the peak apex of benzo[b]fluoranthene shifts more than 0.2 min, which could result in an erroneous compound identification.