scholarly journals DRIE-SI GAS CHROMATOGRAPHY COLUMNS: EFFICIENCY AND THERMAL STABILITY OF STATIONARY PHASES FOR COMPREHENSIVE TWO-DIMENSIONAL (GCxGC) SEPARATIONS

2008 ◽  
Author(s):  
G. Serrano ◽  
S.M. Reidy ◽  
K.D. Wise ◽  
E.T. Zellers
Keyword(s):  
Thermal Stability ◽  
Gas Chromatography ◽  
Stationary Phases ◽  
Two Dimensional ◽  
Chromatography Columns ◽  
Gas Chromatography Columns ◽  
Thermal Stability Of

scholarly journals Characterization of 9 Gas Chromatography Columns by Linear and Lee Retention Indices for Polychlorinated Biphenyls and Polychlorinated Naphthalenes

Separations ◽  
2020 ◽  
Vol 7 (3) ◽  
pp. 38
Author(s):  
Conner Stultz ◽  
Frank L. Dorman
Keyword(s):  
Gas Chromatography ◽  
Polychlorinated Biphenyls ◽  
Stationary Phases ◽  
Retention Indices ◽  
Polychlorinated Naphthalenes ◽  
Similar Chemical ◽  
Chromatography Columns ◽  
Column Selectivity ◽  
The Individual ◽  
Gas Chromatography Columns

Polychlorinated biphenyls (PCBs) and naphthalenes (PCNs) are ubiquitous environmental contaminants with varying degrees of toxicity. There are hundreds of possible congeners with similar chemical characteristics, which make these compounds difficult to isolate in environmental samples. Historically, PCBs and PCNs were identified by using an Aroclor or Halowax mixture instead of the individual compounds, which was impractical because of limited numbers of individual standards. A retention index database was developed with all 209 PCBs and 36 PCNs to help identify these chemicals in environmental and biological matrixes. This study uses linear and Lee retention indices to identify all 209 PCBs and 36 PCNs on nine gas chromatography columns. The most toxic congeners, the 12 dioxin-like PCBs, were compared across all columns to determine which stationary phases gave the best selectivity for those compounds. Column selectivity was also examined to determine columns for confirmatory analyses and GC×GC separations. The Rxi-17SilMS demonstrated the most drastic difference in PCB selectivity and, to a lesser extent, PCNs when compared with the other eight columns and could work as a confirmatory column or as a 2nd dimension column for GC×GC separations.

MEMS-based gas chromatography columns with nano-structured stationary phases

2008 ◽  
Author(s):  
Bassam Alfeeli ◽  
Syed Ali ◽  
Vaibhav Jain ◽  
Reza Montazami ◽  
James Heflin ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Stationary Phases ◽  
Chromatography Columns ◽  
Gas Chromatography Columns

Standardized test mixture for the characterization of comprehensive two-dimensional gas chromatography columns: the Phillips mix

2003 ◽  
Vol 1019 (1-2) ◽  
pp. 261-272 ◽  
Author(s):  
Jean-Marie D. Dimandja ◽  
Garrick C. Clouden ◽  
Ivelisse Colón ◽  
Jean-François Focant ◽  
Whitney V. Cabey ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Standardized Test ◽  
Two Dimensional ◽  
Test Mixture ◽  
Chromatography Columns ◽  
Gas Chromatography Columns

scholarly journals Review on stationary phases and coating methods of MEMs gas chromatography columns

2020 ◽  
Vol 39 (1) ◽  
pp. 247-259
Author(s):  
Liu Yang ◽  
Molin Qin ◽  
Junchao Yang ◽  
Genwei Zhang ◽  
Jiana Wei
Keyword(s):  
Gas Chromatography ◽  
Microelectromechanical Systems ◽  
Stationary Phases ◽  
Preparation Methods ◽  
Site Analysis ◽  
Advantages And Disadvantages ◽  
Coating Methods ◽  
On Line ◽  
Inorganic Adsorbents ◽  
Gas Chromatography Columns

Abstract Gas chromatography (GC) is an important and widely used technique for separation and analysis in the field of analytical chemistry. Micro gas chromatography has been developed in response to the requirement for on-line analysis and on-site analysis. At the core of micro gas chromatography, microelectromechanical systems (MEMs) have the advantages of small size and low power consumption. This article introduces the stationary phases of micro columns in recent years, including polymer, carbon materials, silica, gold nanoparticles, inorganic adsorbents and ionic liquids. Preparation techniques ranging from classical coating to unusual sputtering of stationary phases are reviewed. The advantages and disadvantages of different preparation methods are analyzed. The paper introduces the separation characteristics and application progress of MEMs columns and discusses possible developments.

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