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Increasing Selectivity in Comprehensive Three-dimensional Gas Chromatography via an Ionic Liquid Stationary Phase Column in One Dimension by W. Christopher Siegler; Jeffery A. Crank; Daniel W. Armstrong; Robert E. Synovec is a Chemistry article available to read on EtoBox.

What is Increasing Selectivity in Comprehensive Three-dimensional Gas Chromatography via an Ionic Liquid Stationary Phase Column in One Dimension about?

Recent advances in improving the selectivity and performance for a comprehensive, three-dimensional (3D) gas chromatograph (GC(3)) instrument are described. With GC(3), two six-port diaphragm valves are utilized as the interfaces between three, in-series capillary columns housed in a standard GC instrument fitted with a high data acquisition rate flame ionization detector (FID). Modulation periods for sampling from one column to the next are set so that sufficient slices (i.e., modulations) are acquired by the subsequent dimension resulting in comprehensive data. We present GC(3) instrumentation with significantly higher 3D peak capacity than previously reported. An average peak capacity production (i.e., per time) of 180 resolved peaks per minute was experimentally achieved for three representative analytes in a 3D diesel sample separation. This peak capacity production is about 4 times higher than our previous report. We also demonstrate the significant benefit of the added chemical selectivity of the three column GC(3) instrument relative to a two column GC x GC instrument, in which one of the three columns is a triflate ionic liquid stationary phase column with a high selectivi

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Author

W. Christopher Siegler; Jeffery A. Crank; Daniel W. Armstrong; Robert E. Synovec

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1873-3778)

Published

2010

Language

EN

Field

Chemistry (Physical Sciences)