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LCGC has announced the winners of the 4th Annual Emerging Leader and Lifetime Achievement in Chromatography Awards.

The Pittcon Editors? Awards have been awarded to the products judged to be the most innovative at the show. The gold award was shared by the LECO Citius LC–HRT and the WITec True Surface Microscopy Raman spectrometer.

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Many GPC/SEC set-ups provide molar masses and molar mass distributions based on evaluation with a molar mass calibration curve created using molar mass reference standards.

Many laboratory budgets do not allow the purchase of new ultrahigh-pressure liquid chromatography (UHPLC) systems, and workloads typically are not declining. Fast LC incorporates the use of faster mobile phase flow rates and smaller particles to achieve separations in less time and with equivalent resolution to traditional high performance liquid chromatography (HPLC).

BioTek Instruments has established BioTek Korea, which the company reports will focus on growing the brand, and expanding direct service and application support for customers in South Korea.

William W. Carson, Ming Zhou, and Tom Kearney

Published methods for the determination of ibuprofen in biological fluids by liquid chromatography (LC)–UV or LC–mass spectrometry (MS)-MS have quantitation ranges consistent with the relatively high but typical ibuprofen dose (200–800 mg), generally having lower limits of quantitation in the low micrograms-per-milliliter range. For the analysis of plasma and synovial fluid samples from preclinical (miniature swine) studies utilizing a novel ibuprofen dosage form, LC–MS-MS methods were developed and validated over the 10–1000 ng/mL range. Ibuprofen undergoes biotransformation to ibuprofen acyl glucuronide and sublimes under routine bioanalytical sample handling conditions. Procedures were implemented to minimize the impact of these potential liabilities.

New chromatography technology for the analytical laboratory is being driven by the ever expanding need and challenge to get more and better information faster, all in an economic climate where cost control is a primary concern. At the same time, samples have become more and more complex, detection limits are being driven increasingly lower, and regulatory concerns, particularly for biotherapeutics, are being increasingly scrutinized.

Screening with multiple orthogonal HPLC methods provides a comprehensive alternative to single method drug impurity profiling with their complementary selectivity. One key challenge of the approach is to track the peaks across the orthogonal chromatograms and identify all unique impurities.

High performance liquid chromatography (HPLC) with light absorbance detection (UV) is limited by the dependence of detector response on the structure of the analyte. Some detection techniques based on nebulization of the mobile phase and formation of Aerosol particles demonstrate an analyte independent response that approaches "universal."

Agilent Product Profile

A fast, selective, and reproducible high performance liquid chromatography (HPLC) method was developed and validated for the analyses of third-generation cephalosporin antibiotics, namely, ceftriaxone, cefixime, and cefdinir in human plasma. The analysis was carried out on a 150 mm Ã- 4.6 mm, 5.0-µm C18 column. The mobile phase used was 80:20 (v/v) 50 mmM phosphate buffer (pH 5.0)–methanol at a flow rate of 1.0 mL/min with 230-nm UV detection.

Click the title above to open the LCGC North America April 2011 regular issue, Vol 29 No 4, in an interactive PDF format.

Researchers observe and analyze concentrations of acetaminophen-cysteine adducts using HPLC with electrochemical detection.

Scientists use denaturing HPLC to identify gene variants in Malaysian familial hypercholesterolemia patients.

Agilent Technologies' 2011-2012 Essential Chromatography and Spectroscopy Catalogue has been published and with the company?s acquisition of Varian, is 50% larger than the previous edition.

Bruker is set to acquire Michrom Bioresources, a Californian company that provides LC instrumentation, accessories and consumables for applications in the life science, chemical and applied markets.

Click here to view the complete e-Separation Solutions newsletter from March 28, 2011.

A chromatographic study of extracts from the leaves of a Calomeria amaranthoides has found potent anti-cancer effects against ovarian cancer cells.

Tosoh Product Profile

Gerstel Application Note

LCGC's Editorial Director, Laura Bush, presented Dwight R. Stoll, Assistant Professor in the Department of Chemistry at Gustavus Adolphus College, with the 2011 LCGC Emerging Leader award at Pittcon this year. Afterward, she invited him to talk about his career and work.

As many as 70% of Americans may not be getting enough vitamin D but the average American does eat three slices of bread a day. A recent study has suggested that bread made from vitamin D-rich yeast could be used to bridge the gap.

German companies instrAction and Protagen have signed a strategic alliance for the development of customized phases for downstream processing of biotherapeutics.

Dionex - Non-UV Active Anticonvulsant by HPLC-Charged Aerosol Detection

Dionex - Quantify Drug Metabolites with LC-MS-Charged Aerosol Detection

Slides for the vidcast interview at Pittcon 2011 with Hernan Cortes of Hernan J. Cortes Consulting.