Flow, Pressure, and Temperature Calibration: Part I
In this first of a two-part installment, John Hinshaw discusses the relative effects that inlet pressures and oven temperatures have on capillary gas chromatography.
November Stock Index
November contents
From Tables to Visuals: Principal Component Analysis, Part 1
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
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.
Calendar
Determining Sulfamethazine in Pork Using HPLC with a 100% Water Mobile Phase
The authors describe a method for determining sulfamethazine residue in pork using 100% water in both sample preparation and HPLC separation.
Single-Compound Isotopic Analysis of Organic Materials in Archaeology
The authors review chromatographic separations of archaeological biomolecules for their analysis using accelerator mass spectrometry or isotope ratio mass spectrometry.
My Favorite Shortcuts
A detailed look at some helpful shortcuts for estimating chromatographic parameters.
Short Courses
Emerging Technologies in the MS Arsenal
Several recently developed technologies are described, along with the ways they can improve the utility and performance of mass spectrometers.
Peaks of Interest
LC-GC October Stock Index
Validation and Implementation of In-Process Control HPLC Assays for Active Pharmaceutical Ingredients
The authors describe a sensible approach for validation and implementation of HPLC IPC assays.
Hydrophilic Interaction Chromatography Using Silica Columns for the Retention of Polar Analytes and Enhanced ESI-MS Sensitivity
The use of a silica column for HILIC is examined, including mechanistic studies of analyte retention on silica in aqueous-organic mobile phases.
October Table of Contents
Practical Tips on Preparing Plasma Samples for Drug Analysis Using SPME
This month'ss guest authors review the application of solid-phase SPME to the analysis of drugs in human plasma.
Finding a Needle in a Haystack
This month's "GC Connections" examines the various ways – and their attendant benefits and drawbacks – with which chromatographers and chromatography data-handling systems locate and measure peaks
June 2004 BPA Statement
Click here to view the most current audit statement...
Sept. Ezine Table I revised
Sept. Ezine Table II revised
September Ezine Table I
September Tip Figure 1
September Tip Figure 2
September Tip Figure 3
September Ezine Table II
This Month's Feature Figure 1
