All News

This article presents an organic solvent–free method for the determination of oxytetracycline residue in cow's milk using HPLC.

The author reports a comparative study of the interaction of aromatic amino acids with a class of highly sulfated cyclodextrins as the chiral selectors by capillary electrophoresis.

John Hinshaw examines the tools and accessories that gas chromatographers use in their laboratories.

Flow-rate changes might or might not be acceptable means to adjust retention.

This article reviews several common applications of the critical-pair approach to column chromatography as it is applied under pharmaceutical guidelines and validation strategies.

John Hinshaw examines the effects of system time constants and sampling rates on apparent peak shapes and areas.

The first of two columns about new chromatography columns, accessories, and sample preparation products introduced at Pittcon 2003.

John Dolan provides 10 tips for the proper care and use of LC columns.

This column explores and highlights recently published guidelines for bioanalytical method validation.

John Hinshaw examines basic laboratory heating, ventilation, cooling, electrical, and space requirements for the successful installation of a gas chromatograph.

Products and literature for separation science.

Craig Young and John Dolan provide tips and techniques for evaporative light-scattering detection.

The authors describe a fast, simple procedure for purifying mobile phase that uses SPE disks during the filtration step.

"Milestones in Chromatography" discusses the beginnings of gas chromatography in the UK and the first two international symposia that played an important role in the dissemination of the technique.

Events for November 2003...

This article describes a study that assesses the ability of commercially available GC–MS methods to meet project criteria for MTBE in groundwater matrices.

Leslie Ettre discusses peak asymmetry calculation.

Ron Majors looks at practical ways to return a contaminated column to its original state.

The authors describe a GC assay of trihalomethanes in drinking water.

Guest author Tindall's final installment of a three-part series about buffers.

John Hinshaw looks into a carrier-gas leak and its effects on the chromatographic baseline.

This article presents a volatile ion-pairing reagent that enables good retention of highly polar anionic species using reversed-phase LC–MS.

Corporate profile for Polymicro Technologies, LLC. For more information see the company's web site at www.polymicro.com.

Corporate profile for Isco, Inc. For more information see the company's web site at www.isco.com.

Corporate profile for Grace Vydac. For more information see the company's web site at www.gracevydac.com.

Leslie Ettre looks at the birth and early development of headspace analysis.

2002 author–subject index.

In the second part of a three-part series, the guest author discusses selecting buffers for use in partially aqueous mobile phases.