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In an article recently published in Analytica Chimica Acta, researchers developed a procedure for the determination of artemisinin in A. annua using high performance liquid chromatography (HPLC) with evaporative light scattering detection (ELSD) in couple with microwave-assisted extraction (MAE) as an efficient sample preparation technique. Afterwards, method validation system for HPLC?ELSD analysis was developed.

In a recent article published in the Journal of Proteomic Research, a group of researchers reported a new two-dimensional liquid chromatography (2D LC) protocol for the preparation and analysis of rat neuropeptides.

In a story featured in the ?Hot Science? section on the website of the PBS television show Nova, chromatography is used as a method for analyzing residue at the World Trade Center site. The process of adsorption is described, and a link to a ?Color Separator Activity? is provided.

In a recent issue of Nature Nanotechnology, a group of researchers from the Massachusetts Institute of Technology (Cambridge, Massachusetts) have created a microchip system capable of speeding up the separation and sorting of biomolecules such as proteins.

The Discover Channel website reports that in response to the many counterfeit tequilas being produced today, researchers are using ion and gas chromatography to analyze tequila samples and compare them to the impure mixed "tequila" types. They found the authentic drink, which is regulated by strict standards in Mexico, has noticeably higher levels of certain chemicals, including methanol, 2-methyl-1-butanol, and 2-phenylethanol

In an article published in Microchemical Journal, researchers used HPLC to determine the linuron preconcentrated on octadecyl silanized (ODS) magnetite.

In a note recently published in Clincal Chemistry, researchers describe a method for detection of N2O in exhaled air by using gas chromatography (GC).

The Pittsburgh Conference announced today that Dr. Leroy Hood will deliver the plenary lecture, Systems Biology and Systems Medicine, during the Opening Session of Pittcon 2008 at the Ernest N. Morial Convention Center, New Orleans, LA on March 2, 2008.

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LCGC 2007 Buyers' Guide

LCGC North America welcomes manuscripts that describe techniques and applications of all forms of chromatography and capillary electrophoresis and that are of immediate interest to users in industry, academia, and government.

Eksigent enters Latin America

This month's Technology Forum looks at the topic of Software/LIMS and the trends and issues surrounding it. Joining us for this discussion is Kim Shah, Director of Marketing and Business Development for Informatics at Thermo Fisher Scientific, John Helfrich Director of GMP Lab Automation Programs at VelQuest Corporation, and Donna Lococo, Enterprise Software Solutions Product Leader at PerkinElmer Life and Analytical Sciences.

One issue that has become clear to us throughout courses, workshops, seminars, and various talks on the subject of method validation, is that while many people talk the language, sometimes the individual method validation terms mean different things to different people. While the actual protocols, or experimental details used to measure or evaluate method validation can vary, it's a good idea to have a common understanding of the underlying terms. In this month's installment of "Validation Viewpoint," we have compiled glossary of method validation terms as they pertain to chromatography.

Thermo Fisher Scientific, Inc., (San Jose, California) announced it has acquired all assets of the OptiCell product line from BioCrystal, Ltd. (Westerville, Ohio).

Senior chemist for the LC Columns and Supplies Division of Agilent Technologies (Palo Alto, California) and LCGC columnist Ron E. Majors was awarded the L.S. Palmer Award by the Minnesota Chromatography Forum (MCF) for his outstanding contributions to chromatography.

The Molecular Chirality Research Organization (MCRO) held its annual Molecular Chirality Symposium on May 15-16 at the Tokyo University of Science in Tokyo, Japan. On May 15, this year's honors went to Professor Hiroshi Tsukube of Osaka City University and to JASCO (Easton, Maryland).

Eskigent (Dublin, California) announced a new distribution agreement with Nova Analitica of Brazil.

Shimadzu Scientific Instruments (Columbia, Maryland) announced the opening of a new regional office in Carlsbad, California.

Thar Instruments (Pittsburgh, Pennsylvania) announced the acquistion of Berger SFC division of METTLER TOLEDO (Columbus, Ohio).

This article demonstrates that screening of several hundred possible pesticides is now feasible with one ESI-TOF MS run.

Phenomenex, Inc., a global leader in the separation sciences business, has been notified by R&D Magazine that it has won the coveted R&D 100 Award for the second year in a row.

In order to answer demand for their rapidly growing product line, LECO's entire Separation Science group relocated to its brand new Life Sciences & Chemical Analysis Centre on July 12, 2007.

Arnel Inc. recently the opening of its new sales office in Bangkok, Thailand.

Thar Instruments, a global leader in the design, development and manufacture of Supercritical Fluid Chromatography (SFC) systems announced the acquisition of Berger SFC? division of METTLER TOLEDO. Berger SFC? is a pioneer in the development of SFC and a world leader in SFC Analysis and Purification.

Industrial-Scale Chromatography: A Cost- and Time-Effective Purification Solution Jean Blehaut, Eric Valery and Francois Romelaer Dalian ISCC 2007 Review A look back at this year's event which marked the first international conference on chromatography to be held in China. News All the news from August 2007. Do We Really Need Consultants? Zosimus wonders if consultants offer advice scientists can actually manage without. Market Trends & Analysis Glenn Cudiamat reports on worldwide ion chromatography demand. Q&A: It's A Small World Peter Dawes, chairman of SGE Analytical Science, talks about the benefits and application of microextraction by packed sorbent (MEPS).

EuroAnalysis has established itself as the central forum for discussion and presentation of activities for analytical chemistry in Europe.

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The acid-base constants of the most frequently used antianginals (diltiazem, nadolol, propranolol and verapamil) were determined using capillary zone electrophoresis (CZE). This method is based on measuring the electrophoretic mobility of the solute as a function of pH. The buffer employed was composed of borate-phosphate buffered across the pH range of 3.0–11.2. The acid-base constants were determined by performing linear and non-linear regression on the data obtained. The results were compared with those reported in literature and with those obtained by a spectrophotometric method. After comparison of the values, no significant differences were observed between the three acid-base constants.

After a 25-year dormant period, chromatography was finally reborn in the first years of the 1930s.