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LCGC North America-10-01-2012
LCGC North America
Ultrahigh-Efficiency Protein Separations with Submicrometer Silica Using Slip Flow
October 01, 2012
Column Watch
30
10
Professor Mary Wirth and graduate students Bingchuan Wei and Benjamin Rogers from Purdue University demonstrate a quantum leap in protein column efficiency. Using colloidal silica particles of submicrometer diameters (470 nm), they obtained plate heights that were as much as 15-fold lower than the theoretical limit for Hagen-Poiseuille flow.
Determination of Pesticides in Red Wine by QuEChERS Extraction, Novel Cleanup with Rapid Mini-cartridge Filtration, and LC–MS-MS Detection
October 01, 2012
Article
30
10
Sample preparation in this study involved QuEChERS extraction followed by a filter-based cleanup method that is easier and faster than dispersive solid-phase extraction.
Solid-Phase Microextraction
October 01, 2012
GC Connections
30
10
SPME decouples sampling from matrix effects that would distort the apparent sample composition or disturb the chromatographic separation. It is also easy to use and reduces solvent consumption.
Introduction to Preparative HPLC
October 01, 2012
The Essentials
30
10
An overview of the principles and equipment required for scaling analytical separations to the preparative scale and considerations for the scale of analyte required.
The Role of the Injection Solvent
October 01, 2012
LC Troubleshooting
30
10
A closer look at how the solvent chosen for injection can affect the appearance of chromatographic peaks.
Vol 30 No 10 LCGC North America October 2012 Regular Issue PDF
October 01, 2012
Issue PDF
30
10
Click the title above to open the LCGC North America October 2012 regular issue, Vol 30 No 10, in an interactive PDF format.