LCGC Europe, Mar 1, 2012

LC Troubleshooting

Why Does an Improvement Make Things Worse?

By John W. Dolan

Changing to a "better" liquid chromatography column may not always produce the expected results.

GC Connections

How to Restore an Idle GC Column to Operating Condition

By John V. Hinshaw

Here is what to do to bring an idle capillary GC inlet column and detector back to operating condition – including column installation, electronic pneumatic control calibration, system bakeout and basic test mix performance.

Articles

Determination of Phenylurea Herbicides in Tap Water and Soft Drink Samples by HPLC–UV and Solid-Phase Extraction

By Manpreet Kaur , Ashok Kumar Malik , Baldev Singh

A simple and sensitive high performance liquid chromatography (HPLC) method with ultraviolet (UV) detection was developed to analyse phenylurea herbicides: – monuron, diuron, linuron, metazachlor and metoxuron – in three soft drink brands and tap water.

Simultaneous Determination of Amlodipine and Atorvastatin in Tablet Formulations and Plasma using Capillary Electrophoresis

By Ahmed O. Alnajjar

Capillary electrophoresis (CE) with a UV photo-diode array (DAD) detector was used in a new method to detect the assay of amlodipine besylate (AML) and atorvastatin (ATO) in pharmaceutical formulations and human plasma.

MS The Practical Art

New Frontiers for Mass Spectrometry in Lipidomics (Part 1)

By Giuseppe Astarita , Kate Yu

This two-part column explains how lipids analysis has evolved and the variety of techniques and approaches currently used in lipidomics, including their advantages and disadvantages, such as sample preparation, separations and, of course, mass spectrometry.

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	Incognito Musings from the Little Black Book of GC
	MS: The Practical Art \| Kate Yu Nontargeted Metabolite Profiling by UHPLC-MS: A Case Study in Beer Reveals Effect of Temperature on Nonvolatile Small Molecules During Storage
	LC Troubleshooting \| John W. Dolan Gradient Elution, Part II: Equivalent Separations
	Column Watch \| Ronald E. Majors New Chromatography Columns and Accessories at Pittcon 2013, Part I
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