Speciation of nitrogen-containing compounds in diesel fuel by comprehensive two-dimensional gas chromatography.
Nitrogen-containing compounds in diesel fuel have been speciated by comprehensive two-dimensional gas chromatography with nitrogen chemiluminescence detector (GC x GC-NCD). The speciation of nitrogen-containing compounds in diesel is difficult because of low concentration and complexity. The advantages of GC x GC are improved resolution and enhanced sensitivity. GC x GC-NCD can achieve the type and class separation of nitrogen-containing compounds with an appropriate separation column combination. Diesel contains both neutral (indoles and carbazoles) and basic (pyridines and quinolines) nitrogen-containing compounds. Relative concentrations of each class as well as each carbon number family can be quantified by integrating their peak volumes. This study demonstrates the capability of GC x GC-NCD for speciation of nitrogen-containing compound classes.
Wang
Frank Cheng-Yu
FC
Analytical Sciences Laboratory, ExxonMobil Research and Engineering Company, 1545 Route 22 East, Annandale, NJ 08801, USA. frank.c.wang@exxonmobil.com
Robbins
Winston K
WK
Greaney
Mark A
MA