LCGC Europe-11-01-2004

LCGC Europe

Gradient Performance Checks

November 01, 2004

LC Troubleshooting

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11

In this month's column the authors present a case study to outline several gradient quality checks that can be performed periodically to ensure proper performance of LC instrumentation. The example shows how by taking the time to perform such tests, potential problems can be identified before they reach a critical point.

Facilitated Column Ranking and Selection in Reversed-Phase Liquid Chromatographic Analysis

November 01, 2004

Reversed-phase HPLC

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11

In this article, the authors present a column ranking system to facilitate column selection in reversed-phase liquid chromatographic analysis. The system ranks columns based on their similarity to a reference column of choice and its applicability to a real pharmaceutical analysis is demonstrated.

Finding a Needle in a Haystack

November 01, 2004

GC Connections

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11

This instalment of GC Connections examines the basics of peak identification and quantification and demonstrates how they can both influence the quality of one's results as much as or even more than sample preparation, separation and detection.

From Tables to Visuals: Principal Component Analysis, Part 1

November 01, 2004

Practical Data Handling

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11

In this, the first of a two-part series, the authors provide some background on the PCA method and introduce some of the terminology used by practitioners of the method.

Headspace Liquid Microextraction

November 01, 2004

Sample Preparation Perspectives

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11

A new sampling method for gas chromatography termed single-drop microextraction (SDME) is described. In this column, SDME is applied to residual solvent analysis, both in manual and automated modes.