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In our September issue:
COLUMNS
LC TROUBLESHOOTING
 Estimating Resolution Between Two Peaks
 John Dolan shares a simple technique to estimate resolution when peak width cannot be measured.
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QUESTIONS OF QUALITY
 The Role of Chromatography Data Systems in Fraud and Falsification
 In this instalment of “Questions of Quality”, R.D. McDowall examines the citations and identifies the technical and procedural controls required to ensure data integrity within chromatography data systems. Although focused primarily on the pharmaceutical industry, the principles described here are applicable to all laboratories working to established quality standards.
COLUMN WATCH
 How to Choose the Correct Stationary-Phase Chemistry
 Many problems encountered executing HPLC methods are a result of decisions made during early method development. This article discusses one critical variable in method development, the choice of stationary phase chemistry.
PEER-REVIEWED ARTICLES
 Analysis of Amphetamines and Synthetic Cathinones in Hair Samples Using LC–Tandem Mass Spectrometry and Solid-Phase Extraction
 An efficient method for forensic analysis of amphetamines and synthetic cathinones — the illicit drugs often called “bath salts” — in hair samples is presented.
Rapid UHPLC Method Development for Omeprazole Analysis in a QbD Framework and Transfer to HPLC Using Chromatographic Modelling
 This article describes ways to apply quality-by-design principles to build in a more scientific and risk-based multifactorial strategy in the development of an ultrahigh-pressure liquid chromatography (UHPLC) method for omeprazole and its related impurities.
 
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