May 15th 2024
The still relatively new technique has distinct advantages, but a few of those benefits make it incompatible with some of the currently accepted principles of green sample preparation.
Liquid-Liquid Extraction of Polar Organic Compounds
July 1st 2008A research group from Soochow University (Taipei, Taiwan) have used a dispersive liquid?liquid microextraction technique in conjunction with an in-syringe back-extraction method to extract a polar organic compound from an aqueous sample before liquid chromatography (LC) analysis.
Spark Holland Management Change
June 15th 2008Spark Holland B.V. (Emmen, The Netherlands), manufacturer of equipment for sample introduction, solid-phase extraction, and other separation technology for high performance liquid chromatography (HPLC), mass spectrometry (MS), gas chromatography (GC), and nuclear magnetic resonance (NMR) spectroscopy, has announced a change in management.
Thermo Fisher Scientific Receives Two Frost & Sullivan Best Practices Awards
June 1st 2008Thermo Fisher Scientific Inc., the world leader in serving science, announced that they have been presented with two 2008 Frost & Sullivan Best Practices awards for Market Leadership and Competitive Strategy Leadership in Informatics.
Chinese Researchers Create Novel GC-ECD Procedure
June 1st 2008Scientists in China have devised a GC-ECD procedure that involves bromination of acrylamide to give a derivative that is more easily detected at low levels than acrylamide itself. Their research comes in response to the discovery of acrylamide in many types of cooked food in 2002. This discovery made news due to the link between acrylamide and cancer. From a scientific point of view, the acrylamide discovery ensured the creation of a new generation of research grants, many of which involve mass spectrometry, using GC?MS or LC?MS.
Advion acquires manufacturing partner
May 12th 2008Advion Biosciences Inc. (Ithaca, New York), a developer of microfluidic sampling technology for mass spectrometry (MS) has bought almost all assets of its production supplier, Washburn Manufacturing Technologies Inc. (Trumansburg, New York) for an undisclosed amount.
German researcher presented with Manfred Donike Award
May 12th 2008Agilent Technologies has announced the presentation of the 2008 Manfred Donike Award for scientific excellence in sports doping testing to the German research scientist Ulrich Flenker, of the Institute of biochemistry, German Sport University, Cologne, Germany.
SeQuant acquistion expands Merck KGaA's chromatography portfolio
May 10th 2008Merck KGaA (Darmstadt, Germany), a privately-held pharmaceutical and specialist chemicals company, has acquired the assets of chromatographic column developer SeQuant AB (Umea, Sweden). "[The aquisition] offers Merck superb opportunities for the future expansion of the chromatography business," said Klaus Bischoff, head of the Performance and Life Science Chemicals division at Merck.
Dynamic Extraction: A High-Speed, High-Capacity Purification Process That is Rapidly Scalable
May 1st 2008The authors discuss a preparative process using the principles of countercurrent chromatography. This process is faster, capable of loadings from milligrams to hundreds of grams, and uses robust equipment.
A Simple and Solvent-Free Method for Determining Tetracyclines in Prawns
April 30th 2008A simple and inexpensive sample preparation method followed by reversed-phase high performance liquid chromatography (RP-HPLC) was developed to quantify oxytetracycline (OTC), chlortetracycline (CTC), and tetracycline (TC) residues in prawns. The total analytical time, including sample preparation, was 15 min for each sample and no organic solvents were used in the sample preparation or chromatography stages.
Effects of Sample-dissolving Solvent and Sample Ionic Strength in Routine CE Operation
April 1st 2008Sample diluent ionic strength, pH, organic solvent composition and viscosity can all have a significant impact on the performance of CE separation. It is, therefore, essential that the choice of solvent is optimized during method development. The optimized diluent should be fully specified in the method and used consistently in method validation and all subsequent applications of the method.
New Product Forum: Chromatography Columns
March 4th 2008Pittcon has seen a lot of new products launched this year, all of which innovative in design and concept. A few new products were highlighted in Tuesday morning's session 1173: "New Product Forum: Chromatography Columns," presided over by Robert W. Baudoux from RWB Convention Management.