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Aigelent Podcast-Tip #4: The Importance of Collecting the Appropriate Number of Data Points Across a Peak for Accurate Results

Standard HPLC is often performed with mixtures of organic solvents and buffers. Methods have been defined and accepted for several years. A large number of separation methods run with high concentrations of organic solvents depending on the type of stationary phase with more or less environmental hazardous chemicals.

Aigelent Podcast- Tip #1: Reducing Your Consumption of Acetonitrile by 50%

Dionex Corporation (Sunnyvale, California) announced that its next president, chief executive officer (CEO), and member of its board of directors will be Dr. Frank Witney, effecive April 30, 2009.

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News stories in the chromatography field.

Researchers from the University of Thessaly (Volos, Greece) used a single-drop microextraction technique with gas chromatography (GC) and nitrogen?phosphorus and electron-capture detection to analyze pesticides in vegetables.

Scientists from Sezione di Tecnologie Alimetari (Firenze, Italy) and the University of California, Davis (Davis, California) analyzed grape aroma compounds in Cabernet Sauvignon grapes using headspace solid-phase microextraction (SPME) with gas chromatography?mass spectrometry (GC?MS).

Waters Corporation (Milford, Massachusetts) announced that the National Cancer Institute?s Center for Cancer Research (Bethesda, Maryland) has purchased the company?s ACQUITY UPLC?Synapt High Definition mass spectrometry (MS) and ACQUITY UPLC?Xevo TQ MS systems for metabolomics research programs.

Thermo Fisher Scientific (Philadelphia, Pennsylvania) announced the signing of a partnership with Symyx Technologies (Sunnyvale, California) to market and sell Symyx Notebook and Isentris decision support software.

Researchers from the University of Waterloo (Waterloo, Canada) designed and constructed a cold fiber solid-phase microextraction (SPME) device and applied it to the analysis of off flavors in a rice sample.

Supelco, a division of Sigma-Aldrich (St. Louis, Missouri), announced that its HybridSPE-Precipitation technology has won the SelectScience.net 2009 Scientists? Choice Award for Best New Separations Product in 2008.

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Upcoming educational courses in the chromatography field.

Researchers from the Chinese Academy of Sciences (Beijing, China), Beijing Technology and Business University (Beijing, China), and Hebei University (Shijiazhuang, China) used dispersive liquid?liquid microextraction and ultrahigh-pressure liquid chromatography to analyze triclosan, triclocarban, and methyl-triclosan in aqueous samples.

Today's chromatographers are well aware that low production and high demand for acetonitrile has led to significant price increases in ACN, a favorite solvent used in HPLC.

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REMOTE ARTICLE

Vaccines from plysaccharide materials

Despite the economic downturn, liquid chromatography (LC) will see significant growth in the coming years thanks to the technique's applicability in food safety testing, according to a market report by publisher Kalorama Information.

Waters has announced that the National Cancer Institute's Centre for Cancer Research in Bethesda, Maryland, USA, has purchased one of the company's ACQUITY UPLC/Synapt High Definition Mass Spectrometers (HDMS) and an ACQUITY UPLC/Xevo TQ MS system for the centre's metabolomics research programs.

The field of chromatographic analysis has evolved towards high throughput screening (HTS) in recent years. This trend has favoured the development of techniques and materials that allow shorter analysis times with high efficiency.

Joining us for this discussion are Michael P. Balogh of Waters Corporation; Mark Garner of Applied Biosystems; Michael McGinley of Phenomenex; and Jonathan McNally and Lester Taylor of Thermo Fisher Scientific.

The following question and answer are taken from LCGC Europe's "CE Currents" column (1). Does capillary electrophoresis (CE) sample solvent viscosity have an effect?

Varian, Inc. has published an application note entitled Separation of Trichlorobenzene from Sardines using EcoSpheres. The analysis of pesticides and other contaminants in environmental samples is an important part of monitoring the condition of the environment.

Use of Strata-X-C SPE cartridges allows for an aggressive organic wash of biological samples while maintaining high recoveries of amphetamines and their metabolites. In combination with LC/MS/MS, limits of quantitation (LOQ) of 0.54 ng/mL are achieved for MAMPH, HMMA, and MDMA and LOQ of 1.0 ng/mL are achieved for AMPH and MDA on Gemini C18 HPLC columns. Accuracy and reproducibility are not compromised with this simple and effective approach.

PSS and Tosoh Bioscience are taking EcoSEC - the semi-micro GPC/SEC system for high-throughput polymer analysis - on tour. The tour began at the end of March in Berlin and will visit 14 towns in Germany, Switzerland and the Netherlands before ending in the middle of June.

The Science and Technology Facilities Council's (STFC) Daresbury Laboratory is playing a key part in driving growth and innovation in the UK chemicals industry as part of a new centre launched by John Denham, Secretary of State for Innovation, Universities and Skills.