TSK-GEL Amide-80 HILIC Columns for the Analysis of Melamine and Cyanuric Acid in Milk by LC-MS/MS
December 8th 2008Melamine is an organic base and a trimer of cyanamide, with a 1,3,5- triazine skeleton. Melamine can react with formaldehyde to produce melamine resin, a very durable thermosetting plastic, and melamine foam, a polymeric cleaning product.
Additional Studies in the Separation of PEGylated Proteins by Reversed Phase Chromatography
December 5th 2008Additional studies were undertaken to better understand the chromatographic behavior of PEGylated proteins in an effort to improve purification and characterization techniques of such proteins.
Technology Forum: Capillary Electrophoresis
December 2nd 2008This month E-Separations Solutions' Technology Forum looks at the topic of capillary electrophoresis and the trends and issues surrounding it. Joining us for this discussion is Tobias Preckel of Agilent Technologies; Susan Darling of Beckman Coulter, Inc.; and Frank A. Gomez of California State University.
Additional Studies in the Separation of PEGylated Proteins by Reversed Phase Chromatography
December 2nd 2008Additional studies were undertaken to better understand the chromatographic behavior of PEGylated proteins in an effort to improve purification and characterization techniques of such proteins.
A Hydrophilic Interaction Chromatography Method for the Purity Analysis of Cytosine
December 1st 2008Cytosine (chemical name 4-amino-2-hydroxypyrimidine) is a pyrimidine derivative with a hetereocyclic aromatic ring and two substituents (amine and keto groups) attached and is a polar compound of significant biological and pharmaceutical interest. In response to the intended use of bulk cytosine as a raw material in pharmaceutical manufacturing, a method for the determination of the purity of cytosine was developed.
Researchers Develop New Method for Detecting Contraband in Cargo Containers
December 1st 2008Researchers Edward Staples from the US measurement technology company Q&A Solutions (Westlake Village, CA) and Shekar Viswanathan from the National University (San Diego, CA) have developed a new method for detecting contraband in cargo containers using urface acoustic waves (SAWs) and a capillary-based gas chromatograph column.
Scientists in Germany Discover Alternative Ways to Measure Proteins in Culture
December 1st 2008Scientist Cornelia Kasper and colleagues from the Gottfried Wilhelm Leibniz University of Hanover (Hanover, Germany) thought that a liquid chromatography method with short monolithic columns would be a quicker alternative to measure proteins in culture while also having had the potential to separate different proteins.
Dispersive Liquid-Liquid Microextraction GC Method
December 1st 2008Researchers from National Tsing Hua University (Hsinchu, Taiwan) developed a dispersive liquid?liquid microextraction (DLLME) method based on solidification of a floating organic drop and combined it with gas chromatography with either electron-capture or mass spectrometry detection.
SPE of Pesticides from Fruit Juices with Carbon Nanotubes
December 1st 2008A research group from the University of La Laguna and ICIA (both in La Laguna, Tenerife, Canary Islands, Spain) used multiwalled carbon nanotubes as a solid-phase extraction (SPE) medium for extracting eight organophosphorus pesticides from various commercial apple, grape, orange, and pineapple juices.