Urinary organic acids: retention indices on two capillary gas chromatography columns

1989 ◽  
Vol 491 ◽  
pp. 186-192 ◽  
Author(s):  
Claudine Wurth ◽  
A. Kumps ◽  
Y. Mardens
Keyword(s):  
Gas Chromatography ◽  
Organic Acids ◽  
Capillary Gas Chromatography ◽  
Retention Indices ◽  
Urinary Organic Acids ◽  
Chromatography Columns ◽  
Gas Chromatography Columns

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.

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