Researchers at Universidade Federal de Santa Maria (Santa Maria, Brazil) and Centro de Pesquisas e Desenvolvimento Leopold Americo Miguez de Mello-CENPES/PETROBAS (Rio de Janeiro, Brazil) analyzed chloride in petroleum coke samples using microwave-induced combustion followed by ion chromatography.
Researchers from National Chung Hsing University (Taichung, Taiwan) analyzed four chlorophenols in aqueous samples using purge-assisted headspace solid-phase microextraction (SPME) followed by gas chromatography?mass spectrometry (GC?MS).
In response to the recent alert issued by the U.S. Food and Drug Administration, Thermo Fisher Scientific (Waltham, Massachusetts) has initiated a program focused on assisting government and commercial food testing laboratories in developing and implementing methods for analyzing melamine in food products imported from China.
A research group from LMTAI (La Rochelle, France) and LVMH Recherche (St. Jean de Braye Cedex, France) analyzed the oligosaccharides ciceritol and stachyose extracted from Tephrosia purpurea seeds using an instant controlled pressure drop pretreatment before solvent extraction.
A researcher from Shagrao Normal University (Shangrao, Jiangxi Province, China) used solid-phase microextraction (SPME) followed by gas chromatography?mass spectrometry (GC?MS) to analyze volatile organic compounds (VOCs) in cigarette smoke.
Upfront Chromatography A/S (Copenhagen, Denmark) announced the development of a single-step process for the isolation of the protein alpha-lactalbumin from whey.
Phenomenex Inc., (Torrance, California), will be presenting a workshop, "Analytical Challenges in Biofuel Analysis," at the 2009 Pittsburgh Conference in Chicago.
Scientists from INIA (Madrid, Spain) used ultrasonic-assisted extraction followed by liquid chromatography with triple-quadrupole mass spectrometry detection (LC?MS) to analyze paraben compounds in environmental solid samples.
Thar Instruments has revealed that its TharSFC International Users Meeting will return to North America early in 2009...
MIP Technologies AB is to receive funding for a four-year project that also includes funding for a three year PhD position...
Melamine 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.
FMS introduces the first and only "Total Solution" Sample Prep system available that combines three sample prep processes into one economical package
Activotec has reported the delivery of a second Activo-P11 peptide synthesizer to the University of Bristol Peptide Synthesis Facility...
The Pittsburgh Conference has announced the addition of four special symposia to the technical programme for Pittcon 2009...
Additional studies were undertaken to better understand the chromatographic behavior of PEGylated proteins in an effort to improve purification and characterization techniques of such proteins.
Varian, Inc. has published an application note entitled Integrated Triple Detection for the Analysis of Pectins by SEC.
Bruker Daltonics maXis™ is a revolutionary new Electrospray Ultra-High Resolution tandem TOF (UHR–Qq–TOF) mass spectrometer.
European author guidelines
Varian, Inc. has published an application note entitled Integrated Triple Detection for the Analysis of Pectins by SEC.
Estimating uncertainty has become one of the most important metrological concepts in analytical science over the last 15 years to such an extent that some authors consider a result useless or invalid unless it is accompanied with an uncertainty statement. This article describes how to estimate uncertainty in chromatographic analysis and how laboratories can calculate it using data from the method validation process.
This 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 were undertaken to better understand the chromatographic behavior of PEGylated proteins in an effort to improve purification and characterization techniques of such proteins.
The answer to the following reader question about resolution loss in a GC analysis was supplied by LCGC's "GC Connections" columnist John Hinshaw.
Do Wrinkle Creams Really Work? High Performance Thin-Layer Chromatography for the Analysis of Lipids Valeria Widmer and Eike Reich UHPLC for the Analysis of Paracetamol Anke Knöfel and Silvia Marten News All the news from December 2008 Incognito Perfecting HPLC Method Specifications As a follow on to last month's column, Incognito provides some tips on how to properly specify HPLC methods as a result of his continual experience of coming across methods that fall short of the standards required Market Trends and Analysis Market Profile: Flash Chromatography Glenn Cudiamat Tips and Trick: GPC/SEC A Development in High Temperature (HT) GPC/SEC Peter Montag Q&A Animal Pharma Professor Chris Shaw from Queens University, Belfast, UK discusses the techniques used to study biologically-active peptides from reptile and amphibian venom in drug discovery
Cytosine (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.
Estimating uncertainty has become one of the most important metrological concepts in analytical science over the last 15 years to such an extent that some authors consider a result useless or invalid unless it is accompanied with an uncertainty statement. This article describes how to estimate uncertainty in chromatographic analysis and how laboratories can calculate it using data from the method validation process.
Careful synchronization is essential when performing sample preparation and chromatographic analysis in parallel for optimized productivity. Automated sample preparation requires reliable and compatible hardware combined with integrated software control of the whole analysis process, including LC–MS or GC–MS analysis.
Pittcon 2009 celebrates 60 years of service to the scientific community. Pittcon 2009 will be held from 8–13 March 2009 at McCormick Place South, in Chicago, Illinois, USA. Pittcon is the biggest annual meeting on laboratory science in the world, incorporating a laboratory product exposition, a diverse, high-quality technical programme and invaluable peer-to-peer networking opportunities.
Electrophoretic techniques, such as sodium dodecyl sulphate polyacrylamide (SDS-PAGE) and isoelectric focusing (IEF) gels, have traditionally been part of release testing in the biopharmaceutical industry. However, these slab gel methods are inconvenient and irreproducible because of the staining/destaining steps used in analyte detection, the use of toxic reagents and high intra- and inter-gel effective mobility variability.
Another precaution I recommend is not to shut off the LC system for more than an hour or so if it or the column contains buffer.
