Researchers Improve Sensitivity of Large Volume Urine Injections with HPLC-MS
June 20th 2008Researchers at the Chinese Academy of Sciences and Tsingua University have developed an automated on-line HPLC-MS method allowing injection of a large volume of urine for the improvement of sensitivity using estrogens as analytes.
Researchers Determine 23 Pesticides in Leafy Vegetables Using a GC-MS Method
June 20th 2008Researchers from the Nutrition and Bromatology Group, Analytical and Food Chemistry Department, and Faculty of Food Science and Technology at the University of Vigo (Ourense, Spain) have developed a GC-MS method for determining residues of 12 insecticides and 11 fungicides in leafy vegetables.
CE-TOFMS Analysis of Amino Acids
June 15th 2008Researchers from Utrecht University?s (Utrecht, The Netherlands) Department of Biomedical Analysis have described a capillary electrophoresis?time-of-flight mass spectrometry (CE?TOFMS) method for analyzing amino acids in the urine of patients with urinary tract infections.
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.
The Pittsburgh Conference Launches Pittcon 2009 Website
June 15th 2008The Pittsburgh Conference announces the launch of its 2009 website, www.pittcon.org, containing relevant information for conferees and exhibitors about Pittcon 2009 which will be in Chicago, Illinois, McCormick Place, March 8 -13, 2009.
Agilent Technologies Acquires Assets of Escort Instruments Corp.
June 15th 2008Agilent Technologies Inc. (Palo, Alto, California) announced it has acquired substantially all of the assets of Taiwan-based Escort Instruments Corp., an established supplier of low-cost test and measurement instruments and a subsidiary of Unitech Printed Circuit Board Corp.
Using ph-LC Control Selectivity of Acidic and Basic Compounds on Gemini-NX
June 12th 2008This technical note from Phenomenex discusses the use of mobile phase pH to control analyte ionization states (pH-LC) in RP-HPLC as a highly effective way to change selectivity. The ionized species of an analyte is shown to have higher polarity (less hydrophobicity) than the neutral species, which results in a loss of expected retention for that analyte. With the use of mobile phase pH in conjunction with a pH-stable column, powerful selectivity manipulation can be achieved.
Isolation and Purification of Polysaccharides
June 12th 2008In the last few decades, the novel functions of polysaccharides have provided a major impetus for increasing scientific attention. Among the most promising aspects are their immunomodulatory and antitumor effects, thickening agents and stabilizer effects.